Varnishd and the disk IO

[rickytato rickytato]

I use a simple tmpfs and work well:

# Varnish
tmpfs /usr/local/var/varnish tmpfs rw,size=256M 0 0

2012/5/14 Per Buer <perbu at varnish-software.com>

> Hi
>
> On Mon, May 14, 2012 at 9:15 AM, 姚伟斌 <nbubingo at gmail.com> wrote:
>
>> Hello, folks,
>>
>> I have a question. Does the varnish often sync the shared memory file
>> named "_.vsm" with the disk? I saw many disk IOs with varnish:
>>
>
> No. But Linux does sync the shmlog to disk as Linux hasn't properly
> implemented the flag that keeps stuff off the disk. You can try to either
> move the shmlog to a memory based filesystem or tune /proc/sys/vm/*dirty*
> and friends. Modern Linux distros seem to prefer syncing stuff to disk very
> aggresivly.
>
> --
> Per Buer,
> Phone: +47 21 98 92 61 / Mobile: +47 958 39 117 / Skype: per.buer
> *Varnish makes websites fly!*
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>
>
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