Re: ~500 megs cached yet 2.6.5 goes into swap hell

[Andrew Morton]

"Brett E." <brettspamacct@xxxxxxxxxxxxx> wrote:
>
> I attached sar, slabinfo and /proc/meminfo data on the 2.6.5 machine.  I 
> reproduce this behavior by simply untarring a 260meg file on a 
> production server, the machine becomes sluggish as it swaps to disk.

I see no swapout from the info which you sent.

A `vmstat 1' trace would be more useful.

> Is there a way to limit the cache so this machine, which has 1 gigabyte of 
> memory, doesn't dip into swap?

Decrease /proc/sys/vm/swappiness?

Swapout is good.  It frees up unused memory.  I run my desktop machines at
swappiness=100.

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