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Reference Guide
TTreePerfStats Class Reference

TTree I/O performance measurement.

see example of use below.

The function FileReadEvent is called from TFile::ReadBuffer. For each call the following information is stored in fGraphIO

  • x[i] = Tree entry number
  • y[i] = 1e-6*(file position)
  • ey[i] = 1e-9*number of bytes read For each call the following information is stored in fGraphTime
  • x[i] = Tree entry number
  • y[i] = Time now
  • ey[i] = readtime, eg timenow - start The TTreePerfStats object can be saved in a ROOT file in such a way that its inspection can be done outside the job that generated it.

Example of use:

{
TFile *f = TFile::Open("RelValMinBias-GEN-SIM-RECO.root");
T = (TTree*)f->Get("Events");
Long64_t nentries = T->GetEntries();
T->SetCacheSize(10000000);
T->SetCacheEntryRange(0,nentries);
T->AddBranchToCache("*");
//
TTreePerfStats *ps= new TTreePerfStats("ioperf",T);
//
for (Int_t i=0;i<nentries;i++) {
T->GetEntry(i);
}
ps->SaveAs("cmsperf.root");
}

then, in a root interactive session, one can do:

root > TFile f("cmsperf.root");
root > ioperf->Draw();
root > ioperf->Print();

The Draw or Print functions print the following information:

  • TreeCache = TTree cache size in MBytes
  • N leaves = Number of leaves in the TTree
  • ReadTotal = Total number of zipped bytes read
  • ReadUnZip = Total number of unzipped bytes read
  • ReadCalls = Total number of disk reads
  • ReadSize = Average read size in KBytes
  • Readahead = Readahead size in KBytes
  • Readextra = Readahead overhead in percent
  • Real Time = Real Time in seconds
  • CPU Time = CPU Time in seconds
  • Disk Time = Real Time spent in pure raw disk IO
  • Disk IO = Raw disk IO speed in MBytes/second
  • ReadUZRT = Unzipped MBytes per RT second
  • ReadUZCP = Unipped MBytes per CP second
  • ReadRT = Zipped MBytes per RT second
  • ReadCP = Zipped MBytes per CP second

NOTE 1 :

The ReadTotal value indicates the effective number of zipped bytes returned to the application. The physical number of bytes read from the device (as measured for example with strace) is ReadTotal +ReadTotal*Readextra/100. Same for ReadSize.

NOTE 2 :

A consequence of NOTE1, the Disk I/O speed corresponds to the effective number of bytes returned to the application per second. The Physical disk speed is DiskIO + DiskIO*ReadExtra/100.

Definition at line 38 of file TTreePerfStats.h.

Classes

struct  BasketInfo
 

Public Types

using BasketList_t = std::vector< std::pair< TBranch *, std::vector< size_t > >>
 
- Public Types inherited from TVirtualPerfStats
enum  EEventType {
  kUnDefined, kPacket, kStart, kStop,
  kFile, kFileOpen, kFileRead, kRate,
  kNumEventType
}
 
- Public Types inherited from TObject
enum  {
  kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kInconsistent = 0x08000000,
  kBitMask = 0x00ffffff
}
 
enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
enum  EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
 
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5),
  kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 

Public Member Functions

 TTreePerfStats ()
 default constructor (used when reading an object only) More...
 
 TTreePerfStats (const char *name, TTree *T)
 Create a TTree I/O perf stats object. More...
 
virtual ~TTreePerfStats ()
 Destructor. More...
 
virtual void Browse (TBrowser *b)
 Browse. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Return distance to one of the objects in the TTreePerfStats. More...
 
virtual void Draw (Option_t *option="")
 Draw the TTree I/O perf graph. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Return distance to one of the objects in the TTreePerfStats. More...
 
virtual void FileEvent (const char *, const char *, const char *, const char *, Bool_t)
 
virtual void FileOpenEvent (TFile *, const char *, Double_t)
 
virtual void FileReadEvent (TFile *file, Int_t len, Double_t start)
 Record TTree file read event. More...
 
virtual void Finish ()
 When the run is finished this function must be called to save the current parameters in the file and Tree in this object the function is automatically called by Draw and Print. More...
 
virtual Long64_t GetBytesRead () const
 
virtual Long64_t GetBytesReadExtra () const
 
virtual Double_t GetCpuTime () const
 
virtual Double_t GetDiskTime () const
 
BasketList_t GetDuplicateBasketCache () const
 Return the collection of baskets which have been read by the TTreeCache more than once. More...
 
TGraphErrorsGetGraphIO ()
 
TGraphErrorsGetGraphTime ()
 
const char * GetHostInfo () const
 
const char * GetName () const
 Returns name of object. More...
 
virtual Int_t GetNleaves () const
 
virtual Long64_t GetNumEvents () const
 
TPaveTextGetPave ()
 
virtual Int_t GetReadaheadSize () const
 
virtual Int_t GetReadCalls () const
 
virtual Double_t GetRealTime () const
 
TStopwatchGetStopwatch () const
 
virtual Int_t GetTreeCacheSize () const
 
virtual Double_t GetUnzipTime () const
 
virtual void PacketEvent (const char *, const char *, const char *, Long64_t, Double_t, Double_t, Double_t, Long64_t)
 
virtual void Paint (Option_t *chopt="")
 Draw the TTree I/O perf graph. More...
 
virtual void Print (Option_t *option="") const
 Print the TTree I/O perf stats. More...
 
virtual void PrintBasketInfo (Option_t *option="") const
 Print the TTree basket information. More...
 
virtual void RateEvent (Double_t, Double_t, Long64_t, Long64_t)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object to filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save primitive as a C++ statement(s) on output stream out. More...
 
virtual void SetBytesRead (Long64_t nbytes)
 
virtual void SetBytesReadExtra (Long64_t nbytes)
 
virtual void SetCompress (Double_t cx)
 
virtual void SetCpuTime (Double_t cptime)
 
virtual void SetDiskTime (Double_t t)
 
virtual void SetGraphIO (TGraphErrors *gr)
 
virtual void SetGraphTime (TGraphErrors *gr)
 
virtual void SetHostInfo (const char *info)
 
virtual void SetLoaded (TBranch *b, size_t basketNumber)
 
virtual void SetLoaded (size_t bi, size_t basketNumber)
 
virtual void SetLoadedMiss (TBranch *b, size_t basketNumber)
 
virtual void SetLoadedMiss (size_t bi, size_t basketNumber)
 
virtual void SetMissed (TBranch *b, size_t basketNumber)
 
virtual void SetMissed (size_t bi, size_t basketNumber)
 
virtual void SetName (const char *name)
 
virtual void SetNleaves (Int_t nleaves)
 
virtual void SetNumEvents (Long64_t)
 
virtual void SetReadaheadSize (Int_t nbytes)
 
virtual void SetReadCalls (Int_t ncalls)
 
virtual void SetRealNorm (Double_t rnorm)
 
virtual void SetRealTime (Double_t rtime)
 
virtual void SetTreeCacheSize (Int_t nbytes)
 
virtual void SetUnzipTime (Double_t uztime)
 
virtual void SetUsed (TBranch *b, size_t basketNumber)
 
virtual void SetUsed (size_t bi, size_t basketNumber)
 
virtual void SimpleEvent (EEventType)
 
virtual void UnzipEvent (TObject *tree, Long64_t pos, Double_t start, Int_t complen, Int_t objlen)
 Record TTree unzip event. More...
 
virtual void UpdateBranchIndices (TObjArray *branchNames)
 Update the fBranchIndexCache collection to match the current TTree given the ordered list of branch names. More...
 
- Public Member Functions inherited from TVirtualPerfStats
virtual ~TVirtualPerfStats ()
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
ULong_t CheckedHash ()
 Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Clear (Option_t *="")
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare abstract method. More...
 
virtual void Copy (TObject &object) const
 Copy this to obj. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
Bool_t HasInconsistentHash () const
 Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
R__ALWAYS_INLINE Bool_t IsOnHeap () const
 
virtual Bool_t IsSortable () const
 
R__ALWAYS_INLINE Bool_t IsZombie () const
 
virtual void ls (Option_t *option="") const
 The ls function lists the contents of a class on stdout. More...
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
void SetBit (UInt_t f)
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
R__ALWAYS_INLINE Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 

Protected Member Functions

BasketInfoGetBasketInfo (TBranch *b, size_t basketNumber)
 Return the BasketInfo corresponding to the given branch and basket. More...
 
BasketInfoGetBasketInfo (size_t bi, size_t basketNumber)
 Return the BasketInfo corresponding to the given branch and basket. More...
 
- Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected). More...
 
void MakeZombie ()
 

Protected Attributes

std::vector< std::vector< BasketInfo > > fBasketsInfo
 
std::unordered_map< TBranch *, size_t > fBranchIndexCache
 
Long64_t fBytesRead
 
Long64_t fBytesReadExtra
 
Double_t fCompress
 
Double_t fCpuTime
 
Double_t fDiskTime
 
TFilefFile
 
TGraphErrorsfGraphIO
 pointer to the Tree being monitored More...
 
TGraphErrorsfGraphTime
 
TString fHostInfo
 
TTextfHostInfoText
 
TString fName
 
Int_t fNleaves
 
TPaveTextfPave
 
Int_t fReadaheadSize
 
Int_t fReadCalls
 
Double_t fRealNorm
 
Double_t fRealTime
 
TGaxisfRealTimeAxis
 
TTreefTree
 pointer to the file containing the Tree More...
 
Int_t fTreeCacheSize
 
Double_t fUnzipTime
 
TStopwatchfWatch
 

Additional Inherited Members

- Static Public Member Functions inherited from TVirtualPerfStats
static TVirtualPerfStats *& CurrentPerfStats ()
 Return the current ROOT perf stats if any. More...
 
static const char * EventType (EEventType type)
 Return the name of the event type. More...
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 

#include <TTreePerfStats.h>

Inheritance diagram for TTreePerfStats:
[legend]

Member Typedef Documentation

◆ BasketList_t

using TTreePerfStats::BasketList_t = std::vector<std::pair<TBranch*, std::vector<size_t> >>

Definition at line 48 of file TTreePerfStats.h.

Constructor & Destructor Documentation

◆ TTreePerfStats() [1/2]

TTreePerfStats::TTreePerfStats ( )

default constructor (used when reading an object only)

Definition at line 105 of file TTreePerfStats.cxx.

◆ TTreePerfStats() [2/2]

TTreePerfStats::TTreePerfStats ( const char *  name,
TTree T 
)

Create a TTree I/O perf stats object.

Definition at line 134 of file TTreePerfStats.cxx.

◆ ~TTreePerfStats()

TTreePerfStats::~TTreePerfStats ( )
virtual

Destructor.

Definition at line 182 of file TTreePerfStats.cxx.

Member Function Documentation

◆ Browse()

void TTreePerfStats::Browse ( TBrowser b)
virtual

Browse.

Reimplemented from TObject.

Definition at line 202 of file TTreePerfStats.cxx.

◆ DistancetoPrimitive()

Int_t TTreePerfStats::DistancetoPrimitive ( Int_t  px,
Int_t  py 
)
virtual

Return distance to one of the objects in the TTreePerfStats.

Reimplemented from TObject.

Definition at line 211 of file TTreePerfStats.cxx.

◆ Draw()

void TTreePerfStats::Draw ( Option_t option = "")
virtual

Draw the TTree I/O perf graph.

by default the graph is drawn with option "al" Specify option ="ap" to show only the read blocks and not the line connecting the blocks

Reimplemented from TObject.

Definition at line 244 of file TTreePerfStats.cxx.

◆ ExecuteEvent()

void TTreePerfStats::ExecuteEvent ( Int_t  event,
Int_t  px,
Int_t  py 
)
virtual

Return distance to one of the objects in the TTreePerfStats.

Reimplemented from TObject.

Definition at line 271 of file TTreePerfStats.cxx.

◆ FileEvent()

virtual void TTreePerfStats::FileEvent ( const char *  ,
const char *  ,
const char *  ,
const char *  ,
Bool_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 112 of file TTreePerfStats.h.

◆ FileOpenEvent()

virtual void TTreePerfStats::FileOpenEvent ( TFile ,
const char *  ,
Double_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 113 of file TTreePerfStats.h.

◆ FileReadEvent()

void TTreePerfStats::FileReadEvent ( TFile file,
Int_t  len,
Double_t  start 
)
virtual

Record TTree file read event.

  • start is the TimeStamp before reading
  • len is the number of bytes read

Implements TVirtualPerfStats.

Definition at line 280 of file TTreePerfStats.cxx.

◆ Finish()

void TTreePerfStats::Finish ( )
virtual

When the run is finished this function must be called to save the current parameters in the file and Tree in this object the function is automatically called by Draw and Print.

Definition at line 320 of file TTreePerfStats.cxx.

◆ GetBasketInfo() [1/2]

TTreePerfStats::BasketInfo & TTreePerfStats::GetBasketInfo ( TBranch b,
size_t  basketNumber 
)
protected

Return the BasketInfo corresponding to the given branch and basket.

Definition at line 358 of file TTreePerfStats.cxx.

◆ GetBasketInfo() [2/2]

TTreePerfStats::BasketInfo & TTreePerfStats::GetBasketInfo ( size_t  bi,
size_t  basketNumber 
)
protected

Return the BasketInfo corresponding to the given branch and basket.

Definition at line 394 of file TTreePerfStats.cxx.

◆ GetBytesRead()

virtual Long64_t TTreePerfStats::GetBytesRead ( ) const
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 89 of file TTreePerfStats.h.

◆ GetBytesReadExtra()

virtual Long64_t TTreePerfStats::GetBytesReadExtra ( ) const
inlinevirtual

Definition at line 90 of file TTreePerfStats.h.

◆ GetCpuTime()

virtual Double_t TTreePerfStats::GetCpuTime ( ) const
inlinevirtual

Definition at line 91 of file TTreePerfStats.h.

◆ GetDiskTime()

virtual Double_t TTreePerfStats::GetDiskTime ( ) const
inlinevirtual

Definition at line 92 of file TTreePerfStats.h.

◆ GetDuplicateBasketCache()

TTreePerfStats::BasketList_t TTreePerfStats::GetDuplicateBasketCache ( ) const

Return the collection of baskets which have been read by the TTreeCache more than once.

Definition at line 410 of file TTreePerfStats.cxx.

◆ GetGraphIO()

TGraphErrors* TTreePerfStats::GetGraphIO ( )
inline

Definition at line 93 of file TTreePerfStats.h.

◆ GetGraphTime()

TGraphErrors* TTreePerfStats::GetGraphTime ( )
inline

Definition at line 94 of file TTreePerfStats.h.

◆ GetHostInfo()

const char* TTreePerfStats::GetHostInfo ( ) const
inline

Definition at line 95 of file TTreePerfStats.h.

◆ GetName()

const char* TTreePerfStats::GetName ( ) const
inlinevirtual

Returns name of object.

This default method returns the class name. Classes that give objects a name should override this method.

Reimplemented from TObject.

Definition at line 96 of file TTreePerfStats.h.

◆ GetNleaves()

virtual Int_t TTreePerfStats::GetNleaves ( ) const
inlinevirtual

Definition at line 97 of file TTreePerfStats.h.

◆ GetNumEvents()

virtual Long64_t TTreePerfStats::GetNumEvents ( ) const
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 98 of file TTreePerfStats.h.

◆ GetPave()

TPaveText* TTreePerfStats::GetPave ( )
inline

Definition at line 99 of file TTreePerfStats.h.

◆ GetReadaheadSize()

virtual Int_t TTreePerfStats::GetReadaheadSize ( ) const
inlinevirtual

Definition at line 100 of file TTreePerfStats.h.

◆ GetReadCalls()

virtual Int_t TTreePerfStats::GetReadCalls ( ) const
inlinevirtual

Definition at line 101 of file TTreePerfStats.h.

◆ GetRealTime()

virtual Double_t TTreePerfStats::GetRealTime ( ) const
inlinevirtual

Definition at line 102 of file TTreePerfStats.h.

◆ GetStopwatch()

TStopwatch* TTreePerfStats::GetStopwatch ( ) const
inline

Definition at line 103 of file TTreePerfStats.h.

◆ GetTreeCacheSize()

virtual Int_t TTreePerfStats::GetTreeCacheSize ( ) const
inlinevirtual

Definition at line 104 of file TTreePerfStats.h.

◆ GetUnzipTime()

virtual Double_t TTreePerfStats::GetUnzipTime ( ) const
inlinevirtual

Definition at line 105 of file TTreePerfStats.h.

◆ PacketEvent()

virtual void TTreePerfStats::PacketEvent ( const char *  ,
const char *  ,
const char *  ,
Long64_t  ,
Double_t  ,
Double_t  ,
Double_t  ,
Long64_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 110 of file TTreePerfStats.h.

◆ Paint()

void TTreePerfStats::Paint ( Option_t chopt = "")
virtual

Draw the TTree I/O perf graph.

Reimplemented from TObject.

Definition at line 444 of file TTreePerfStats.cxx.

◆ Print()

void TTreePerfStats::Print ( Option_t option = "") const
virtual

Print the TTree I/O perf stats.

Reimplemented from TObject.

Definition at line 526 of file TTreePerfStats.cxx.

◆ PrintBasketInfo()

void TTreePerfStats::PrintBasketInfo ( Option_t option = "") const
virtual

Print the TTree basket information.

Implements TVirtualPerfStats.

Definition at line 567 of file TTreePerfStats.cxx.

◆ RateEvent()

virtual void TTreePerfStats::RateEvent ( Double_t  ,
Double_t  ,
Long64_t  ,
Long64_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 116 of file TTreePerfStats.h.

◆ SaveAs()

void TTreePerfStats::SaveAs ( const char *  filename = "",
Option_t option = "" 
) const
virtual

Save this object to filename.

Reimplemented from TObject.

Definition at line 633 of file TTreePerfStats.cxx.

◆ SavePrimitive()

void TTreePerfStats::SavePrimitive ( std::ostream &  out,
Option_t option = "" 
)
virtual

Save primitive as a C++ statement(s) on output stream out.

Reimplemented from TObject.

Definition at line 643 of file TTreePerfStats.cxx.

◆ SetBytesRead()

virtual void TTreePerfStats::SetBytesRead ( Long64_t  nbytes)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 120 of file TTreePerfStats.h.

◆ SetBytesReadExtra()

virtual void TTreePerfStats::SetBytesReadExtra ( Long64_t  nbytes)
inlinevirtual

Definition at line 121 of file TTreePerfStats.h.

◆ SetCompress()

virtual void TTreePerfStats::SetCompress ( Double_t  cx)
inlinevirtual

Definition at line 122 of file TTreePerfStats.h.

◆ SetCpuTime()

virtual void TTreePerfStats::SetCpuTime ( Double_t  cptime)
inlinevirtual

Definition at line 125 of file TTreePerfStats.h.

◆ SetDiskTime()

virtual void TTreePerfStats::SetDiskTime ( Double_t  t)
inlinevirtual

Definition at line 123 of file TTreePerfStats.h.

◆ SetGraphIO()

virtual void TTreePerfStats::SetGraphIO ( TGraphErrors gr)
inlinevirtual

Definition at line 126 of file TTreePerfStats.h.

◆ SetGraphTime()

virtual void TTreePerfStats::SetGraphTime ( TGraphErrors gr)
inlinevirtual

Definition at line 127 of file TTreePerfStats.h.

◆ SetHostInfo()

virtual void TTreePerfStats::SetHostInfo ( const char *  info)
inlinevirtual

Definition at line 128 of file TTreePerfStats.h.

◆ SetLoaded() [1/2]

virtual void TTreePerfStats::SetLoaded ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 139 of file TTreePerfStats.h.

◆ SetLoaded() [2/2]

virtual void TTreePerfStats::SetLoaded ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 140 of file TTreePerfStats.h.

◆ SetLoadedMiss() [1/2]

virtual void TTreePerfStats::SetLoadedMiss ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 141 of file TTreePerfStats.h.

◆ SetLoadedMiss() [2/2]

virtual void TTreePerfStats::SetLoadedMiss ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 142 of file TTreePerfStats.h.

◆ SetMissed() [1/2]

virtual void TTreePerfStats::SetMissed ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 143 of file TTreePerfStats.h.

◆ SetMissed() [2/2]

virtual void TTreePerfStats::SetMissed ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 144 of file TTreePerfStats.h.

◆ SetName()

virtual void TTreePerfStats::SetName ( const char *  name)
inlinevirtual

Definition at line 129 of file TTreePerfStats.h.

◆ SetNleaves()

virtual void TTreePerfStats::SetNleaves ( Int_t  nleaves)
inlinevirtual

Definition at line 130 of file TTreePerfStats.h.

◆ SetNumEvents()

virtual void TTreePerfStats::SetNumEvents ( Long64_t  )
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 124 of file TTreePerfStats.h.

◆ SetReadaheadSize()

virtual void TTreePerfStats::SetReadaheadSize ( Int_t  nbytes)
inlinevirtual

Definition at line 131 of file TTreePerfStats.h.

◆ SetReadCalls()

virtual void TTreePerfStats::SetReadCalls ( Int_t  ncalls)
inlinevirtual

Definition at line 132 of file TTreePerfStats.h.

◆ SetRealNorm()

virtual void TTreePerfStats::SetRealNorm ( Double_t  rnorm)
inlinevirtual

Definition at line 133 of file TTreePerfStats.h.

◆ SetRealTime()

virtual void TTreePerfStats::SetRealTime ( Double_t  rtime)
inlinevirtual

Definition at line 134 of file TTreePerfStats.h.

◆ SetTreeCacheSize()

virtual void TTreePerfStats::SetTreeCacheSize ( Int_t  nbytes)
inlinevirtual

Definition at line 135 of file TTreePerfStats.h.

◆ SetUnzipTime()

virtual void TTreePerfStats::SetUnzipTime ( Double_t  uztime)
inlinevirtual

Definition at line 136 of file TTreePerfStats.h.

◆ SetUsed() [1/2]

virtual void TTreePerfStats::SetUsed ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 145 of file TTreePerfStats.h.

◆ SetUsed() [2/2]

virtual void TTreePerfStats::SetUsed ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 146 of file TTreePerfStats.h.

◆ SimpleEvent()

virtual void TTreePerfStats::SimpleEvent ( EEventType  )
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 109 of file TTreePerfStats.h.

◆ UnzipEvent()

void TTreePerfStats::UnzipEvent ( TObject tree,
Long64_t  pos,
Double_t  start,
Int_t  complen,
Int_t  objlen 
)
virtual

Record TTree unzip event.

  • start is the TimeStamp before unzip
  • pos is where in the file the compressed buffer came from
  • complen is the length of the compressed buffer
  • objlen is the length of the de-compressed buffer

Implements TVirtualPerfStats.

Definition at line 306 of file TTreePerfStats.cxx.

◆ UpdateBranchIndices()

void TTreePerfStats::UpdateBranchIndices ( TObjArray branches)
virtual

Update the fBranchIndexCache collection to match the current TTree given the ordered list of branch names.

Implements TVirtualPerfStats.

Definition at line 346 of file TTreePerfStats.cxx.

Member Data Documentation

◆ fBasketsInfo

std::vector<std::vector<BasketInfo> > TTreePerfStats::fBasketsInfo
protected

Definition at line 75 of file TTreePerfStats.h.

◆ fBranchIndexCache

std::unordered_map<TBranch*, size_t> TTreePerfStats::fBranchIndexCache
protected

Definition at line 74 of file TTreePerfStats.h.

◆ fBytesRead

Long64_t TTreePerfStats::fBytesRead
protected

Definition at line 55 of file TTreePerfStats.h.

◆ fBytesReadExtra

Long64_t TTreePerfStats::fBytesReadExtra
protected

Definition at line 56 of file TTreePerfStats.h.

◆ fCompress

Double_t TTreePerfStats::fCompress
protected

Definition at line 62 of file TTreePerfStats.h.

◆ fCpuTime

Double_t TTreePerfStats::fCpuTime
protected

Definition at line 59 of file TTreePerfStats.h.

◆ fDiskTime

Double_t TTreePerfStats::fDiskTime
protected

Definition at line 60 of file TTreePerfStats.h.

◆ fFile

TFile* TTreePerfStats::fFile
protected

Definition at line 65 of file TTreePerfStats.h.

◆ fGraphIO

TGraphErrors* TTreePerfStats::fGraphIO
protected

pointer to the Tree being monitored

Definition at line 67 of file TTreePerfStats.h.

◆ fGraphTime

TGraphErrors* TTreePerfStats::fGraphTime
protected

Definition at line 68 of file TTreePerfStats.h.

◆ fHostInfo

TString TTreePerfStats::fHostInfo
protected

Definition at line 64 of file TTreePerfStats.h.

◆ fHostInfoText

TText* TTreePerfStats::fHostInfoText
protected

Definition at line 72 of file TTreePerfStats.h.

◆ fName

TString TTreePerfStats::fName
protected

Definition at line 63 of file TTreePerfStats.h.

◆ fNleaves

Int_t TTreePerfStats::fNleaves
protected

Definition at line 52 of file TTreePerfStats.h.

◆ fPave

TPaveText* TTreePerfStats::fPave
protected

Definition at line 69 of file TTreePerfStats.h.

◆ fReadaheadSize

Int_t TTreePerfStats::fReadaheadSize
protected

Definition at line 54 of file TTreePerfStats.h.

◆ fReadCalls

Int_t TTreePerfStats::fReadCalls
protected

Definition at line 53 of file TTreePerfStats.h.

◆ fRealNorm

Double_t TTreePerfStats::fRealNorm
protected

Definition at line 57 of file TTreePerfStats.h.

◆ fRealTime

Double_t TTreePerfStats::fRealTime
protected

Definition at line 58 of file TTreePerfStats.h.

◆ fRealTimeAxis

TGaxis* TTreePerfStats::fRealTimeAxis
protected

Definition at line 71 of file TTreePerfStats.h.

◆ fTree

TTree* TTreePerfStats::fTree
protected

pointer to the file containing the Tree

Definition at line 66 of file TTreePerfStats.h.

◆ fTreeCacheSize

Int_t TTreePerfStats::fTreeCacheSize
protected

Definition at line 51 of file TTreePerfStats.h.

◆ fUnzipTime

Double_t TTreePerfStats::fUnzipTime
protected

Definition at line 61 of file TTreePerfStats.h.

◆ fWatch

TStopwatch* TTreePerfStats::fWatch
protected

Definition at line 70 of file TTreePerfStats.h.

Libraries for TTreePerfStats:
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The documentation for this class was generated from the following files: