1. [OT] Linux caches
My precious linux server box stopped working!... namely the telnet server, the
samba server, and the squid server. There may have been more, but not something
that I used...
When I found that my hard drive capacity was 4.3G and my used space was 4.3G (by
cat'ing something in the /proc folder) I got a little suspicious. This machine is
a fileserver and an internet gateway, and it has a 1G internet cache set.
Methinks the cache should be smaller for such a small hard drive.
How do I change the internet cache size (in squid I think) down to something a
little more maneageable, and what is the location of the cache folder, so I can
clear it out?
Sorry to bother you Euphorians.
==============================================
_______<-------------------\__
/ _____<--------------------__|===
| |_ <-------------------/
\__| Patrick Barnes
***********************************************************************
***********************************************************************
2. Re: [OT] Linux caches
On Tue, Jan 14, 2003 at 09:44:53AM +1100, Patrick.Barnes at transgrid.com.au
wrote:
>
> My precious linux server box stopped working!... namely the telnet server, the
> samba server, and the squid server. There may have been more, but not something
> that I used...
>
> When I found that my hard drive capacity was 4.3G and my used space was 4.3G
> (by cat'ing something in the /proc folder) I got a little suspicious. This
> machine is a fileserver and an internet gateway, and it has a 1G internet cache
> set. Methinks the cache should be smaller for such a small hard drive.
>
> How do I change the internet cache size (in squid I think) down to something a
> little more maneageable, and what is the location of the cache folder, so I can
> clear it out?
>
> Sorry to bother you Euphorians.
>
Hmm ...
/etc/squid/squid.conf
Thats where you can change your settings. (At least its where mine are.)
The option to control that would be cache_dir.
cache_dir ufs /var/cache/squid 100 16 256
Taking that example line,
ufs - Its the type of cache access used.
ufs is the orignal Squid one, aufs is a version which uses POSIX threads
to avoid blocking the main squid process, and diskd is another variant on that
which uses a separate process altogether to do the cache access.
/var/cache/squid - The directory to use as the cache. This is the place
which holds the stuff you may want to delete.
100 - in megabytes (MB), the amount of space to use for the cache. You'll
prob want to change this in your own squid file as well.
16 - number of top-level subdirs to have in the cache dir.
256 - number of second-level subdirs to have in the cache dir.
If you use diskd, 2 more options apply:
cache_dir diskd /var/cache/squid 100 16 256 64 72
64 - number of unacknowledged I/O requests when Squid stops opening new files.
72 - number of unacknowledged messages when Squid starts blocking.
Does the Above help at all Pat?
jbrown
>
> ==============================================
> _______<-------------------\__
> / _____<--------------------__|===
> | |_ <-------------------/
> \__| Patrick Barnes
>
>
Nice, but long, Sig. Also, why doesnt everyone repesct the 80-col width
standard?
*sigh*
>
> ***********************************************************************
>
>
> ***********************************************************************
>
>
>
> TOPICA - Start your own email discussion group. FREE!
--
/"\ ASCII ribbon
\ / campain against
X HTML e-mail and
/*\ news and unneeded MIME
3. Re: [OT] Linux caches
On Tue, Jan 14, 2003 at 01:03:19PM +1100, Patrick.Barnes at transgrid.com.au
wrote:
>
> That helps a lot, thank you.
>
No problem.
> >cache_dir ufs /var/cache/squid 100 16 256
>
> I'm not sure what the significance of having subdirectories and subdirectories
>
> under that accomplishes... What is the purpose of having them?
>
Not really sure. Perhaps for organization or soemthing?
> Also, which file in /proc would be the best one to look at for filesize
> information, or what command will give the total size of a directory and
> all it's contents?
>
Not sure where in /proc (which is Linux specific afaik, tho I'm probably wrong).
"du -hs <dir>" gives the total size of a directory.
"df -h" gives the total free space of all mounted filesystems, can give it
a parameter to get it to show the free space for selected filesystems (like
"df -h /tmp" to get free space for the filesystem where /tmp is located on).
HTH.
> >Nice, but long, Sig. Also, why doesnt everyone repesct the 80-col width
> >standard?
> >*sigh*
>
> My email wordwraps, so I don't notice.
Ah ok, thanks for fix it.
>
> ======================
> ____<---------\__
> / ___<----------__|===
> || <---------/
> \_| Patrick Barnes
>
> (shorter sig)
Yay! LOL.
>
<snip of old email text>
jbrown
>
>
>
> TOPICA - Start your own email discussion group. FREE!
--
/"\ ASCII ribbon
\ / campain against
X HTML e-mail and
/*\ news and unneeded MIME
