Backend fail & 503 Service Unavailable

[M L]

Thanks for reply phk

My mistake , i didnt set enough open file ( ulimit ) in varnish server ,
problem are fixed , it run smooth with 0 backend_fail now thanks for helping
:D



Thanks List

TW


On Thu, Sep 24, 2009 at 3:09 PM, Poul-Henning Kamp <phk at phk.freebsd.dk>wrote:

> In message <113d871c0909221022g2eff01d8gf6857f0dfe27aad8 at mail.gmail.com>,
> M L w
> rites:
>
> >backend_conn            12054        45.32 Backend connections success
> >backend_unhealthy           0         0.00 Backend connections not
> attempted
> >backend_busy                0         0.00 Backend connections too many
> >backend_fail             5900        22.18 Backend connections failures
> >backend_reuse            3503        13.17 Backend connections reuses
> >backend_recycle         11552        43.43 Backend connections recycles
> >backend_unused              0         0.00 Backend connections unused
>
> I don't think there is much I can suggest you, the majority of your
> problem seems to be that your backend cannot keep up with the traffic
> you throw at it.
>
> Almost 1 in 3 connections to the backend fails:
>
>        5900 / (12054 + 5900) = 0.33
>
> --
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
>
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