RE: [SQU] current CVS ... diskd config args changed ...

So then I'm going to have to ask the obvious question.

I have a Dual PIII/500 with 1GB of RAM and 4 x 18G drives (7200rpm).

Running RH7/2.4.2 , ReiserFS (notail,noatime) and Squid 2.4 with DiskD.

Given that for me adding RAM is entirely doable, but faster CPUs or
Faster/More drives is not, would I gain anything by seperating each drive
into 2 or maybe 3 seperate cache_dir statements, rather than just one per
drive?

ie on the theory that multiple diskd per drive would mean that IO requests
could possibly queue up per disk at the OS/Filesystem level and any OS level
elevator sorting (or something) might maybe optimize disk IO performance
some.

Thanks,
Phil P

> -----Original Message-----
> From: Henrik Nordstrom [mailto:hno@hem.passagen.se]
> Sent: Thursday, March 01, 2001 2:40 PM
> To: Hamid Hashemi Golpayegani
> Cc: squid-users@ircache.net
> Subject: Re: [SQU] current CVS ... diskd config args changed ...
>
>
> diskd and aufs are two different approaches for making disk I/O
> non-blocking. This to allow Squid to scale on higher loads. Both
> sacrifice CPU usage for better latency. aufs uses POSIX threads, while
> diskd uses a separate I/O process per cache_dir.
>
> --
> Henrik Nordstrom
> Squid hacker
>
>
> Hamid Hashemi Golpayegani wrote:
> >
> > Sorry for asking this question !
> > what diffrent between diskd and ufs and aufs ?!
> > which one is better nad why ?!?1
> > I am using ReiserFS and ufs in my squid conf . is it ok ?
> >
> > --
> > Regards
> >
> > ============================================================
> > / Seyyed Hamid Reza / WINDOWS FOR NOW !! /
> > / Hashemi Golpayegani / Linux for future , FreeBSD for ever /
> > / Morva System Co. / ------------------------------------- /
> > / Network Administrator/ hamid@morva.net , ICQ# : 42209876 /
> > ===========================================================
> >
> > -----Original Message-----
> > From: hno@hem.passagen.se [mailto:hno@hem.passagen.se]
> > Sent: Friday, March 02, 2001 1:27 AM
> > To: Marc G. Fournier
> > Cc: squid-users@ircache.net
> > Subject: Re: [SQU] current CVS ... diskd config args changed ...
> >
> > Sorry. My fault. The change to use cache_dir options was not fully
> > tested for diskd. There was some unwanted leftovers of the
> old option
> > parsing.
> >
> > Fixed. And at the same time the revised cache_dir parser
> was back-ported
> > to 2.4 to keep cache_dir syntax compability between 2.3,
> 2.4 and 2.5.
> >
> > So the next 2.4 CVS snapshot will have a revised cache_dir
> syntax, again
> > compatible with 2.3 in most configurations (async-io
> differs slightly).
> >
> > /Henrik
> >
> > Marc G. Fournier wrote:
> > >
> > > from the newest version in CVS:
> > >
> > > Mar 1 09:43:19 demeter squid: Bungled squid.conf line
> 568: cache_dir
> > diskd /usr/local/squid/cache/1 15240 16 256
> > >
> > > with 568 showing:
> > >
> > > cache_dir diskd /usr/local/squid/cache/1 15240 16 256
> > > cache_dir diskd /usr/local/squid/cache/2 15240 16 256
> > > cache_dir diskd /usr/local/squid/cache/3 15240 16 256
> > >
> > > On Tue, 13 Feb 2001, Henrik Nordstrom wrote:
> > >
> > > > Yes, the syntax has changed. Hopefully you will find it
> is to the easier
> > > > ;-)
> > > >
> > > >
> > > > Since you are using the defaults you do not need any of
> the options and
> > > > can simply specify:
> > > >
> > > > cache_dir diskd /usr/local/squid/cache/1 15240 16 256
> > > >
> > > > Or if you like you can spell it out fully with all the options
> > > > specified:
> > > >
> > > > cache_dir diskd /usr/local/squid/cache/1 15240 16 256
> max-size=-1 Q1=64
> > > > Q2=72
> > > >
> > > > /Henrik
> > > >
> > > >
> > > >
> > > >
> > > > Marc G. Fournier wrote:
> > > > >
> > > > > trying to bumble my way through fixing this, but am
> at a loss so far
> > ...
> > > > > what is wrong with my cache_dir line? :(
> > > > >
> > > > > Feb 12 10:31:39 demeter squid: Bungled squid.conf line 568:
> > max-size=-1 64 72
> > > > >
> > > > > thanks ...
> > > > >
> > > > > Marc G. Fournier
> > marc.fournier@acadiau.ca
> > > > > Senior Systems Administrator Acadia
> > University
> > > > >
> > > > > "These are my opinions, which are not necessarily
> shared by my
> > employer"
> > > > >
> > > > > --
> > > > > To unsubscribe, see
> http://www.squid-cache.org/mailing-lists.html
> > > >
> > > > --
> > > > To unsubscribe, see
http://www.squid-cache.org/mailing-lists.html
> > >
> > >
> >
> > Marc G. Fournier
marc.fournier@acadiau.ca
> > Senior Systems Administrator Acadia
University
> >
> > "These are my opinions, which are not necessarily shared by my
employer"
>
> --
> To unsubscribe, see http://www.squid-cache.org/mailing-lists.html

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