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SubjectVM patches in 2.6.4-rc1-mm2
Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.4-rc1/2.6.4-rc1-mm2/
>
> - More VM tweaks and tuneups

Running 2.6.3-lofft-snsus-264rc1mm2vm (nfsd loff_t, sunrpc locking & -mm
VM patches). Seems to be working well.

Both servers started running this kernel on Wednesday morning, or at the
end of week9 in the graphs.

On a 1G fileserver:
http://www.matchmail.com/stats/lrrd/matchmail.com/fileserver.matchmail.com-memory.html

Swapping has gone down to zero in this kernel also:
http://www.matchmail.com/stats/lrrd/matchmail.com/fileserver.matchmail.com-swap.html

Top users of slab:
buffer_head 71822 74382 48 77 1 : tunables 120 60
pte_chain 19557 21180 128 30 1 : tunables 120 60
dentry_cache 17771 27840 256 15 1 : tunables 120 60
radix_tree_node 13666 13680 260 15 1 : tunables 54 27
nfs_inode_cache 7870 7872 640 6 1 : tunables 54 27
ext3_inode_cache 5402 7028 512 7 1 : tunables 54 27
vm_area_struct 5385 6728 64 58 1 : tunables 120 60
size-128 2184 2310 128 30 1 : tunables 120 60
filp 2144 2670 256 15 1 : tunables 120 60
inode_cache 1117 1130 384 10 1 : tunables 54 27
size-64 896 928 64 58 1 : tunables 120 60
size-32 836 896 32 112 1 : tunables 120 60


And a 1.5G file/kde over VNC terminal server:
http://www.matchmail.com/stats/lrrd/matchmail.com/srv-lnx2600.matchmail.com-memory.html

Swapping has gone down to zero on this server also:
http://www.matchmail.com/stats/lrrd/matchmail.com/srv-lnx2600.matchmail.com-swap.html

One thing for this server. Most of the desktops are not in use right
now, so I'd expect the swap usage to grow, but shouldn't be swapping in
and out a lot in this workload.

Top users of slab:
pte_chain 112097 113550 128 30 1 : tunables 120 60
buffer_head 85089 103334 48 77 1 : tunables 120 60
dentry_cache 81260 112875 256 15 1 : tunables 120 60
ext3_inode_cache 72637 84805 512 7 1 : tunables 54 27
vm_area_struct 40689 41876 64 58 1 : tunables 120 60
radix_tree_node 15603 19140 260 15 1 : tunables 54 27
filp 14536 14955 256 15 1 : tunables 120 60
size-32 3420 3472 32 112 1 : tunables 120 60
size-128 3420 3720 128 30 1 : tunables 120 60
size-64 2768 2958 64 58 1 : tunables 120 60
dnotify_cache 2364 2490 20 166 1 : tunables 120 60
sock_inode_cache 1867 1918 512 7 1 : tunables 54 27
proc_inode_cache 1650 2040 384 10 1 : tunables 54 27
unix_sock 1635 1645 512 7 1 : tunables 54 27
inode_cache 1620 1620 384 10 1 : tunables 54 27
task_struct 578 595 1584 5 2 : tunables 24 12
size-8192 574 574 8192 1 2 : tunables 8 4

Most of the previous 2.6 kernels I was running on these servers would be
lightly hitting swap by now. This definitely looks better to me.

I want to continue running these patches until at least Tuesday of next
week to see how they perform over a longer period.

P.S. I've changed the color scheme in the graphs, let me know what you
think of them. They seem better, but there are a couple colors that
aren't easily seen when they overlap... :-/

Mike
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