[OpenAFS] cpu load

[Jenkins, Steven]

Without knowing any details of your system, from your description, it
appears that the software raid daemons are accounting for your CPU time.

Without knowing how you've configured your disks (ie, devices,
controllers, virtual devices, filesystems, mount points), I'd think it
reasonable for your system, which is a fileserver (I'm assuming), to be
spending a lot of time doing software raid.  I'd also like to know:

- is your system is doing anything else besides serving AFS
- how many clients does your system have
- are people doing I/O intensive work on files that reside on your
fileserver
- are there any known issues with your combination of OS & raid software

For example, if there are many clients simultaneously doing lots of
compiles of files in AFS, all of which are on this server, then it might
be perfectly reasonable to see CPU utilization like you are seeing.

Steven

-----Original Message-----
From: openafs-info-admin@openafs.org
[mailto:openafs-info-admin@openafs.org] On Behalf Of sabah
Sent: Tuesday, November 18, 2003 2:18 PM
To: openafs-info@openafs.org
Subject: [OpenAFS] cpu load


 Dear All,
          I have an AFS server running linux.
"
Linux version 2.4.18-3 (bhcompile@daffy.perf.redhat.com) (gcc version
2.96=20
20000731 (Red Hat Linux 7.3 2.96-110)) #1 Thu Apr 18 07:37:53 EDT 2002 "
If one run "uptime" you get

uptime
  7:15pm  up 11:11,  2 users,  load average: 2.36, 2.59, 2.66

Most of the load used by:
 26 root      16   0     0    0     0 RW   32.0  0.0 161:09 raid1d
 27 root      15   0     0    0     0 DW   11.5  0.0  67:12 raid1syncd

 does anyone know how to get the load down please?

 Thanks,  Sabah.

--=20
***********************************************************************
*     From Sabah Salih                                                *
*     Department of Physics and Astronomy,                            *
*     The University of Manchester, Oxford Rd, Manchester M13 9PL     *
*     Tel: +44 1612754171 or  x4171 Mobile: 07941344515               *
*     E-mail: sabah@hep.man.ac.uk                                     *
*     Home:							      *
*     48 Danes Road, Fallowfield, Manchester			      *
*      M14 5JS							      *
*                                                                     *
***********************************************************************


_______________________________________________
OpenAFS-info mailing list
OpenAFS-info@openafs.org
https://lists.openafs.org/mailman/listinfo/openafs-info