Re[3]: [squid-users] No SWAPIN in store.log

Hi,

-----Original Message-----
From: Colin Campbell <sgcccdc@citec.qld.gov.au>
Date: Wed, 3 Oct 2001 15:28:29 +1000 (EST)
>
> Hi,
>
> On Wed, 3 Oct 2001, Delcam wrote:
>
> > I think the same. I've limited memory that squid can use for
> > in-memory objects by 10Mb and I have big enough for my demands
> > disk space (~3Gb). It is full on 90%. I've analized store.log
> > for 10 days. There isn't any SWAPIN! Besides this, cachemgr.cgi
> > says that 1,9Gb was sent to the users from the cache.
> > I just cannot believe that during 10 days all these objects was
> > transferred from memory.
>
> They probably weren't. I guess I didn't really explain properly. As far as
> I understand, squid's cache is made up of two parts, the memory cache and
> the disk cache. Objects that are being hit frequently live in the memory
> cache. Once their usage goes down, they're SWAPOUT-ed to the disk cache.
> If they become very busy and squid considers it worthwhile, the object
> will be SWAPIN-ed from the disk cache to the memory cache where they'll
> remain until it's time for another SWAPOUT.
>
> Sending the object to a client does not constitute a SWAPIN. Yes the
> object comes off disk into memory, but it isn't put into the memory cache.
> Therefore it isn't a SWAPIN.
>
> Colin

Ok, this means that among this 3Gb wasn't any popular enough
object to copy it from the disk to memory even some of them
were accessed, right?

But returning to the original question.
I can get that an object was deleted from the cache with analyzing
the store.log. I can get that an object was accessed from the cache
with analyzing the access.log
How I can know that an object is placed to the cache, i.e. it was
considered as cacheable, retrieved from the source and stored
somewhere (in-memory or on disk)?
I've seen a directive CREATE, but the FAQ says that it is unused anymore.

Dmitri
Received on Tue Oct 02 2001 - 23:58:54 MDT