Re: Read Buffer Error

From: Rene Brun (Rene.Brun@cern.ch)
Date: Sun Oct 24 1999 - 19:12:18 MEST


Hi Robert,
Thanks for reporting this small problem happening
in case your file is less than 1000 bytes long and the number
of entries in the Tree is above a limit depending on the
number of leaves in the branches. This does not affect
the correct behaviour of the process.

I am now dealing with this exotic  case in my development version.

Rene Brun

On Sun, 24 Oct 1999, Robert Rowe wrote:

> Hi,
> 
> When a simple root tree is opened with the TBrowser, and the leaf is
> histogrammed through the TBrowser, I recieve the following error:
> 
> Error in <TFile::ReadBuffer>: error in reading all requested bytes from
> file test.root, got 661 of 1000
> 
> This problem seems to not impact any functionality
> 
> The problem does not occur when less than 3991 leaves are read, but
> occurs when more than 3990 leaves are read.
> 
> The problem occurs on an Intel based machine running Linux (Suse 6.2
> /egcs 1.1.2) using the Redhat egcs 1.1.2 binary root distribution.  The
> problem occurs for root v2.23/06/04 and v2.22/10 (again the binary
> distribution)
> 
> The following is the macro to create the tree:



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