Re: Failure Ratio : Going into hit-only-mode?

From: Michael Fuhr <>
Date: Mon, 3 Aug 1998 07:35:02 -0600

On Mon, Aug 03, 1998 at 10:30:39AM +0100, Nick O'Brien wrote:

> I'm getting the following messages in my cache.log file. There don't
> appears be any problems with Squid itself (the rest of cache.log only
> indicate non-critical errors).
> Obviously I don't want Squid going into hit only mode suddenly like this.
> I'm running Squid v1.1.22 on Digital Unix 4.0D. I couldn't find anything
> in the FAQ.

Section 12.13 in the FAQ mentions "Going into hit-only-mode":

> Could someone tell me if this indicates a more serious problem or if there
> is any way I can prevent this, thanks.
> 1998/07/31 18:36:46| Failure Ratio at 1.01
> 1998/07/31 18:36:46| Going into hit-only-mode for 5 minutes...

Check your access.log for repeated queries to sites that are down or
have other trouble (ERR_*). The warning could mean you have connectivity
problems; it could also be caused by a single unreachable site if the
cache isn't very busy.


> 1998/07/31 19:13:18| Failure Ratio at 236.86
> 1998/07/31 19:13:18| Going into hit-only-mode for 5 minutes...

Yikes -- never seen one that high :-) Are there numerous sites
with ERR_* in access.log, or just a few?

Michael Fuhr
Received on Mon Aug 03 1998 - 06:36:21 MDT

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