100% CPU IOwait

[Caires Vinicius]

My /etc/fstab is

*tmpfs /var/lib/varnish tmpfs defaults,noatime,nodiratime,size=300M 0 0*

On Tue, Nov 3, 2015 at 10:42 AM Caires Vinicius <cairesvs at gmail.com> wrote:

> Hi guys!
>
> We've started to use Varnish 4 with Amazon Linux with EBS SSD of 40GB,
> memory of 7.5GB. We use the file storage with 20G allocated with ttl of 11
> minutes and grace of 5 hours, all the other configs are standard.
>
> Sometimes when we have a lot of request that result into cache miss we
> started to notice that our request latency grows and the iowait stays at
> 100%, something similar to this
> https://www.varnish-cache.org/lists/pipermail/varnish-misc/2008-April/01...
> <https://www.varnish-cache.org/lists/pipermail/varnish-misc/2008-April/016139.html>.
> And our threads reaches the maximum (1000).
>
> Do you guys have any idea why is that?
>
> Cheers,
>
> Caires
>
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