[Varnish] #849: Session timeout while receiving POST data from client causes multiple broken backend requests
Varnish
varnish-bugs at varnish-cache.org
Mon Jul 2 11:21:59 CEST 2012
#849: Session timeout while receiving POST data from client causes multiple
broken backend requests
----------------------+-----------------------------------------------------
Reporter: lew | Owner: tfheen
Type: defect | Status: new
Priority: normal | Milestone: Varnish 3.0 dev
Component: varnishd | Version: 2.1.4
Severity: normal | Keywords: 503, post, backend write error: 11 (Resource temporarily unavailable)
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Comment(by vrobert):
I forgot to write that we use Varnish 2.1.5.
Replying to [comment:7 vrobert]:
> Hello,
>
> we had this issue too.
> I've done some tests: disabling keepalive or increasing the keepalive on
apache does nothing.
>
> The thing is bizzare because some of our customers seem to be more
affected than others. (Slow connection, perhaps but not sure)
>
> I don't want to use pipe.
> Increasing of sess_timeout have extended the waiting time before the
error arrives, but the number of errors is always the same.
>
> Statistics on 06/26/2012: 1571434 POST - 3336 POST with 503 (0.21%) -
sess_timeout = 5
> Statistics on 06/27/2012: 1391161 POST - 3011 POST with 503 (0.19%) -
sess_timeout = 5
> Statistics on 06/28/2012: 1322403 POST - 2493 POST with 503 (0.20%) -
sess_timeout = 5
> Statistics on 06/29/2012: 1328187 POST - 2645 POST with 503 (0.21%) -
sess_timeout = 5 & 10
> Statistics on 06/30/2012: 1201337 POST - 2593 POST with 503 (0.22%) -
sess_timeout = 10
> Statistics on 07/01/2012: 1270146 POST - 2841 POST with 503 (0.21%) -
sess_timeout = 10
>
--
Ticket URL: <https://www.varnish-cache.org/trac/ticket/849#comment:8>
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