Re: [squid-users] Lots of TCP_SWAPFAIL_MISS ?

From: Per Jessen <>
Date: Tue, 17 Jun 2014 11:54:55 +0200

Per Jessen wrote:

> squid 2.7:
> Due to a kernel issue with ICMP redirects, my squid has been unused
> for 5-6 months, but after having found the fix, it's now active again.
> I'm now seeing quite a few TCP_SWAPFAIL_MISS, which I believe to
> mean "apparently cached, but cache not found" ? It's not IO error, so
> what else might this be caused by?

This seems a bit odd:

squidclient -m PURGE

HTTP/1.0 404 Not Found
Server: squid/2.7.STABLE6
Date: Tue, 17 Jun 2014 09:50:08 GMT
Content-Length: 0
Expires: Tue, 17 Jun 2014 09:50:08 GMT
X-Cache: MISS from <squid>
X-Cache-Lookup: NONE from <squid>:3128
Via: 1.0 (squid/2.7.STABLE6)
Connection: close

yet, when I use wget to retrieve the same file, I get a TCP_HIT/200:

TCP_HIT/200 390418 GET -
NONE/- application/x-rpm

I will be probably upgrading to 3.x in the autumn, so I guess it's
hardly worth pursuing, but even so.

Per Jessen, Zürich (19.0°C) - virtual servers, made in Switzerland.
Received on Tue Jun 17 2014 - 09:55:11 MDT

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