Re: [squid-users] huge page faults

Thanks. Much better wording. You have now earned the title "Squid FAQ
contributor".

Added this in the memory section as "How much memory do I need in my
Squid server?". Also referenced from "My Squid becomes very slow after
it has been running for some time" in "Troubleshooting". Should be
visible on the web site tomorrow (the web copy is updated once per day).

Regards
Henrik

Simon White wrote:
>
> 05-Apr-02 at 18:46, Henrik Nordstrom (hno@marasystems.com) wrote :
> > Ok. Will put something along the following in the FAQ I think:
> >
> > Squid uses approximately 10 MB of ram per GB in cache_dir, plus you cache_mem
> > setting and about 10-20MB extra. It is recommendable that your Squid server
> > has about twice this amount of RAM or more. The extra RAM besides what is
> > used by Squid is used by the operating system to improve disk I/O performance
> > and by other applications or services running on the server.
> >
> Here's my suggestion:-
>
> Squid uses approximately 10 MB of RAM per GB of the total of all
> cache_dirs, plus your cache_mem setting and about an additional 10-20MB.
> It is recommended to have at least twice this amount of physical RAM
> available on your Squid server.
>
> The extra RAM besides what is used by Squid is used by the operating
> system to improve disk I/O performance and by other applications or
> services running on the server. This will be true even of a server which
> runs Squid as the only tcp service, since there is a minimum level of
> memory needed for process management, logging, and other OS level
> routines.
>
> If you have a low memory server, and a large disk, then you will not
> necessarily be able to use all the disk space, since as the cache fills
> the memory available will be insufficient, forcing Squid to swap out
> memory and affecting performance. A very large cache_dir total and
> insufficient physical RAM + Swap could cause Squid to stop functioning
> completely. The solution for larger caches is to get more physical RAM;
> allocating more to Squid via cache_mem will not help.
> -ends-
>
> In the FAQ, this could be the answer to memory and performance questions,
> e.g.
>
> - how much cache_mem should I set?
> - how much memory do I need for a cache_dir of xxx MB?
> - I start Squid and it works well, but after a while surfing is very slow
> and sometimes images don't appear.
>
> --
> [Simon White. vim/mutt. simon@mtds.com. GIMPS:61.68% see www.mersenne.org]
> When the bosses talk about improving productivity, they are never talking
> about themselves.
> [Linux user #170823 http://counter.li.org. Home cooked signature rotator.]
Received on Fri Apr 05 2002 - 14:53:13 MST