kswapd causing giant load

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Hi,

I encounter a giant load (up to 10.0) when I copy files from a remote
server to the local machine.

The setup is:
OS: Redhat FC3 with 2.6.11-1.14_FC3smp (redhat distro) kernel, XFS filesystem
HW: Dual opteron 2.0GHz on Tyan motherboard, 4Gb RAM

The partition i am using is:
2.1Tb hardware RAID-5 unit served by 3ware controller (8 x 300Gb)
OR
300Gb simple SATA disk, also served by a 3ware controller.

I have no clue where to start combatting this problem.
- Kernel specific?
- Due to improper setup of the 3ware controllers?
- XFS filesystem specific?

10715 hatuser   15   0 35432 2792 2020 R 28.3  0.1   1:45.06 sshd
10724 hatuser   16   0 17504  11m  664 R  8.3  0.3   0:33.56 rsync
  175 root      15   0     0    0    0 S 19.7  0.0 136:25.58 kswapd0
  172 root      15   0     0    0    0 S  0.3  0.0   1:23.59 pdflush
  174 root      15   0     0    0    0 S  0.3  0.0  99:18.93 kswapd1

Before I start extensive experimenting, maybe someone knows right away
what causes high loads due to "kswapd* and pdflush".

Cheers
Gaspar


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