Re: [squid-users] squid freebsd aufs + coss - same hd

> rebuild of coss take longer time... about 30 mins to rebuild 6gb (with
> configs posted previously)...
>
> correct ?
>
> i will loose my cached files (aufs) if cache_swap_log is set to the
> same location of old swap file ?!

1) cache_swap_log is obsolete. Its now cache_swap_state to better reflect
the file to which it applies, and that the file is NOT a normal log file.

2) Better leave the cache_swap_log/cache_swap_state at defaults (missing
from squid.conf) for squid to handle it safely.

3) What Adrian meant was the order of the lines in squid.conf. Not an
actual re-ordering of cache-dir. This is a major reason for #2, so a
re-ordering in the config does not screw up the custom state file
numbering.

Amos

>
> thanks !
>
> regards
>
> Alexandre
>
> On Dec 6, 2007 8:50 AM, Adrian Chadd <adrian@creative.net.au> wrote:
>> cache_dir's are 'checked' in order; I suggest putting the coss
>> directories
>> first.
>>
>>
>>
>> adrian
>>
>>
>> On Fri, Dec 07, 2007, Amos Jeffries wrote:
>> > Alexandre Correa wrote:
>> > >can 2 cache_dir on the same hd (dedicated for squid) cause
>> performance
>> > >impact ?
>> > >
>> > >i?m using cache_dir aufs ... and cache_dir coss (objetcs smaller than
>> > >1000k)
>> > >
>> > >cache_dir aufs /var/spool/squid/cache 110000 32 256
>> > >cache_dir coss /var/spool/squid/onda_coss01 6000 max-size=1000000
>> > >maxfullbufs=4 membufs=20 block-size=4096
>> > >
>> > >
>> > >thanks !!
>> > >
>> >
>> > Looks good. Just some hints though...
>> >
>> > You'd do well to set min-size on the AUFS dir, to push the smaller
>> > objects into COSS. At present small objects can go to either, and
>> large
>> > only in AUFS.
>> >
>> > A 4KB block-size may cause a lot of watse if you get a large number of
>> > small objects such as optimized web pages or spacer images. The
>> default
>> > 512 is sufficient for COSS dir up to 8GB large
>> > Not worth changing it now though if any important data has
>> already
>> > gone to COSS. Would require a destroy and rebuild to fix that.
>> >
>> > Two on same HDD might drag each other down a little, but no more than
>> a
>> > single large cachedir doing the same throughput. Unfortunately squid
>> is
>> > not head-optimised for disk usage yet. COSS is more in-memory than the
>> > others so it should still be a net gain over a single pure aufs.
>> >
>> > Amos
>>
>> --
>> - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid
>> Support -
>> - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -
>>
>
>
>
> --
>
> Sds.
> Alexandre J. Correa
> Onda Internet / OPinguim.net
> http://www.ondainternet.com.br
> http://www.opinguim.net
>
Received on Thu Dec 06 2007 - 15:42:07 MST