Re: [squid-users] Workaround for failing hardware

Kurt,

Since disk access must be minimal, the access_log should be "none".
Make sure that the other log files are also "none".

-Marcus

Kurt Buff wrote:
> All,
>
> I'm running squid 2.6.17 on a FreeBSD 6.2-STABLE. This should be
> mostly irrelevant, as I am trying to ameliorate a hardware issue while
> I get a new machine up and running. The issue is that we have
> extremely slow initial load of pages, which I suspect is because of
> slow and perhaps faulty disk access - haven't localized it to disk or
> controller yet. We have moved from a T1 to a DS3, and ever since
> people have been complaining of slow web access, which seems a bit
> counterintuitive.
>
> The hardware is:
> 2.4GHz Celeron CPU
> 2G RAM
> Single HD: ad6: 76319MB <WDC WD800JD-00MSA1 10.01E01> at
> ata3-master SATA150
>
> I'm getting a fair number of this message:
>
> ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=112214751
>
>
> and am noticing that squid is dumping core every once in a while,
> though it does restart:
> pid 3509 (squid), uid 100: exited on signal 6 (core dumped)
>
>
> I've tried to solve this temporarily by preventing squid from caching
> at all - by adding "no_cache deny all" and "pipeline_prefetch on" to
> the config.
>
> What I want to make sure of is that other settings don't negate this
> effort. What should I strip (or add) to my configuration below?
>
> Current configuration file:
>
> http_port 3128
> hierarchy_stoplist cgi-bin ?
> acl QUERY urlpath_regex cgi-bin \?
> cache deny QUERY
> acl apache rep_header Server ^Apache
> broken_vary_encoding allow apache
> cache_mem 512 MB
> cache_dir ufs /usr/local/squid/cache 2000 16 256
> logformat combined %>a %<A %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st
> "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh
> access_log /usr/local/squid/logs/access.log combined
> access_log syslog combined
> refresh_pattern ^ftp: 1440 20% 10080
> refresh_pattern ^gopher: 1440 0% 1440
> refresh_pattern . 0 20% 4320
> acl all src 0.0.0.0/0.0.0.0
> no_cache deny all
> acl manager proto cache_object
> acl localhost src 127.0.0.1/255.255.255.255
> acl to_localhost dst 127.0.0.0/8
> acl SSL_ports port 443
> acl CONNECT method CONNECT
> http_access allow manager localhost
> http_access deny manager
> http_access deny !Safe_ports
> http_access deny CONNECT !SSL_ports
> acl our_networks src 10.0.0.0/8 192.168.8.0/24 192.168.10.0/24
> 192.168.11.0/24 192.168.12.0/24 192.168.13.0/24 192.168.15.0
> /24 192.168.24.0/24
> http_access allow our_networks
> http_access deny all
> http_reply_access allow all
> icp_access allow all
> visible_hostname zsquid.mycompany.com
> coredump_dir /usr/local/squid/cache
> pipeline_prefetch on
>
>
> Kurt
>
>
Received on Wed Jun 25 2008 - 20:33:24 MDT