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None heavy disk usage with electronScattering 

Forum: Documentation and Examples
Date: 31 Aug, 2011
From: Daren Sawkey <Daren Sawkey>

Hi,

I am running example electronScattering and find there is a large disk
usage of 7 MB/s:

$ iostat -xNk 1 10
...
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           8.02    0.00    2.76    7.02    0.00   82.21

Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s
avgrq-sz avgqu-sz   await  svctm  %util
sda               0.00     0.00    0.00    0.00     0.00     0.00    
0.00     0.00    0.00   0.00   0.00
sdb               0.00    13.00    0.00 1662.00     0.00  6696.00    
8.06     0.94    0.57   0.54  89.30
vg_monty-lv_root     0.00     0.00    0.00    0.00     0.00     0.00    
0.00     0.00    0.00   0.00   0.00
vg_monty-lv_swap     0.00     0.00    0.00    0.00     0.00     0.00    
0.00     0.00    0.00   0.00   0.00
sdc               0.00     0.00    0.00    0.00     0.00     0.00    
0.00     0.00    0.00   0.00   0.00
vg_monty-lv_home     0.00     0.00    0.00 1674.00     0.00  6696.00    
8.00     0.94    0.56   0.53  88.50

(I'm using the sdb drive)

This slows the system down considerably when submitting multiple jobs
(barely tolerable on a multi-CPU desktop, but makes a cluster with AFS
unusable).

- I've tried Scientific linux 6 or RHEL 5
- Geant4.9.4.p02 or Geant4.9.5.b01
- either without analysis or with AIDA
- I can't find what file is being written to. I've tried lsof -c
electron, du, and df
- other examples e.g. electronScattering2 don't show this.

Any help on trying to figure this out would be appreciated.

Thanks  --  Daren.

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1 None: Re: heavy disk usage with electronScattering   (Colin Paul Gloster - 01 Sep, 2011)
2 None: Re: heavy disk usage with electronScattering   (Daren Sawkey - 01 Sep, 2011)
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