Re: [squid-users] worse performance with cache_dir on

I have an ATA ST3250310AS, which I believe is 7200 RPM.
My current drive is as follows:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda5 4956284 1483764 3216688 32% /
/dev/sda3 4956316 305608 4394876 7% /var
/dev/sda2 226042032 191956 214182472 1% /home
/dev/sda1 77749 17117 56618 24% /boot
tmpfs 475284 0 475284 0% /dev/shm

My current squid.conf shows:
auth_param basic realm ProxyPlayer proxy server
auth_param basic credentialsttl 2 hours
auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/squid_passwd
authenticate_cache_garbage_interval 1 hour
authenticate_ip_ttl 2 hours

acl all src 0.0.0.0/0.0.0.0
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 Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl Safe_ports port 1863 # MSN messenger
acl ncsa_users proxy_auth REQUIRED
acl maxuser max_user_ip -s 2
acl CONNECT method CONNECT

http_access allow ncsa_users
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access deny to_localhost
http_access deny maxuser
http_access allow localhost
http_access deny all

icp_access allow all

http_port 8080
hierarchy_stoplist cgi-bin ?

#cache_dir ufs /var/spool/squid 100 16 256
#cache_dir ufs /home/squidcache 80000 16 256
#cache_die aufs /home/squidcache 8000 16 256

access_log /var/log/squid/access.log squid

acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY

refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320

log_icp_queries on

> --------------------------------------------------
> From: "Jeff Pang" <pangj_at_arcor.de>
> Sent: Friday, August 21, 2009 3:55 PM
> To: <squid-users_at_squid-cache.org>
> Subject: Re: [squid-users] worse performance with cache_dir on
>
>> use aufs instead if you are under Linux, otherwise use diskd for
>> cache_dir.
>> also a fast disk is helpful much (like a SAS disk with 15000 rpm).
>>
>> 2009/8/21 J Webster <webster_jack_at_hotmail.com>:
>>> What are some troubleshooting things to look for with squid performance?
>>> I mainly use it to allow users to stream video content but when the
>>> cache_dir is on it seems to perform worse than when off. When on the
>>> video
>>> pauses to buffer fairly frequently but not when the cahe_dir is off.
>>> This
>>> shouldn't really be the case should it? Or is it the fact that it's
>>> streaming content that might cause an issue?
>>> My cache_dir was set to cache_dir ufs /home/squidcache 80000 16 256
>>>
>>
Received on Sun Aug 23 2009 - 10:17:43 MDT