Re: SSHFS makes the ROOT launch speed slow?

Hello Axel,

ROOT is installed locally.

Regards,

--
OKUMURA, Akira oxon@{astro.isas.jaxa.jp,stanford.edu}
Institute of Space and Astronautical Science (ISAS/JAXA)
Now at KIPAC/SLAC/Stanford
Varian Physics #306, 382 Via Pueblo Mall, MC 4060
Stanford, CA 94305-4060
TEL 650-736-0971/FAX 650-724-5065
Skype : okumura.akira

On 2011/02/01, at 3:33, Axel Naumann wrote:

> Hi,
> 
> You could install ROOT locally and access your files via SSHFS.
> 
> Cheers, Axel.
> 
> OKUMURA, Akira wrote on 01/27/2011 07:52 PM:


>> Hello ROOTers,

>> 

>> I often use Macfusion (http://macfusionapp.org/) and SSHFS (http://fuse.sourceforge.net/sshfs.html) on my Mac to mount a remote file system via SSH, because X11 is very slow with a slow network connection.

>> 

>> My problem is that the ROOT launch speed is slow when I launch ROOT in an SSHFS directory.

>> 

>> This is the result of "time" command on the local file system. It is fast enough.

>> $ time root -b -q

>> root [0] 

>> root -l -b -q  0.09s user 0.03s system 97% cpu 0.127 total

>> 

>> And this is the result when I launch ROOT in a directory which is mounted via SSHFS.

>> $ time root -b -q

>> root [0] 

>> root -l -b -q  0.09s user 0.04s system 11% cpu 1.143 total

>> 

>> In this example, it takes only 1.1 second because the value was measured from my office where LAN speed is fast. But when I do it from my home, it takes 5 to 10 seconds. In worst case, it takes several ten seconds.

>> 

>> I suppose ROOT does something in a directory when being launch, and hence, it takes long time in the case that SSHFS speed is low.

>> 

>> Is there any hack to get the launch speed faster?

>> 

>> ROOT 5.28.00

>> OS X 10.6.6

>> Macfusion 2.0.3

>> 

>> Regards,

>> 

>> --

>> OKUMURA, Akira oxon@{astro.isas.jaxa.jp,stanford.edu}

>> Institute of Space and Astronautical Science (ISAS/JAXA)

>> Now at KIPAC/SLAC/Stanford

>> Varian Physics #306, 382 Via Pueblo Mall, MC 4060

>> Stanford, CA 94305-4060

>> TEL 650-736-0971/FAX 650-724-5065

>> Skype : okumura.akira

>> 

>> 

>