RE: [squid-users] squid performance epoll. 350req/sec 100% cpu

Hi Rmkml,
  This is dell pe1850. single cpu (hyperthreading).
  Not too many diskio (as the cache is only 6gb and 512ram cache) (I have
2gb of ram, 3.2ghz cpu)
 iptables is configured. ( I can drop this for testing)
 Heartbeat is running (2 boxes)
 dnsserver for squid is running
 
Kind Regards
  Michal Mihalik

cat /proc/interrupts
CPU0 CPU1
  0: 157 270583168 IO-APIC-edge timer
  1: 0 8 IO-APIC-edge i8042
  4: 0 8027344 IO-APIC-edge serial
  8: 0 0 IO-APIC-edge rtc
  9: 0 0 IO-APIC-level acpi
 12: 0 96 IO-APIC-edge i8042
 14: 0 74 IO-APIC-edge ide0
169: 0 0 IO-APIC-level uhci_hcd:usb1
177: 0 6180176 IO-APIC-level megaraid
185: 0 0 IO-APIC-level uhci_hcd:usb2
193: 0 0 IO-APIC-level uhci_hcd:usb3
201: 0 343508884 IO-APIC-level eth0
209: 0 20 IO-APIC-level ehci_hcd:usb4
217: 0 251486493 IO-APIC-level eth1
NMI: 0 0
LOC: 270593401 270591920
ERR: 0
MIS: 0

My squid.conf

http_port 80
icp_port 0
hierarchy_stoplist cgi-bin ?
cache_mem 512 MB
maximum_object_size 32 MB
maximum_object_size_in_memory 48 KB
ipcache_size 1024
fqdncache_size 1024
fqdncache_size 512
cache_replacement_policy lru
memory_replacement_policy lru
cache_dir aufs /var/spool/squid 6000 16 256
cache_access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log
cache_store_log none
pid_filename /var/run/squid.pid
debug_options ALL,1
redirect_rewrites_host_header off
request_body_max_size 15 MB
refresh_pattern ^http: 0 20% 4320
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
negative_ttl 1 seconds
positive_dns_ttl 15 minutes
request_timeout 30 seconds
persistent_request_timeout 10 seconds
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 lan_192 src 192.168.0.0/255.255.0.0
acl to_localhost dst 127.0.0.0/8
acl purge method PURGE
acl smeFarm dst 217.67.20.139 192.168.0.2 85.248.69.139 192.168.0.5
192.168.0.4
http_access allow purge lan_192
http_access deny purge
http_access allow manager localhost
http_access deny manager
http_access deny !http_port
http_access deny to_localhost
http_access allow smeFarm
http_access deny all
http_reply_access allow all
httpd_accel_host virtual
httpd_accel_port 80
httpd_accel_uses_host_header on
logfile_rotate 0
memory_pools_limit 100 MB
client_db off
buffered_logs on
strip_query_terms off
coredump_dir /var/spool/squid

> -----Original Message-----
> From: rmkml [mailto:rmkml@free.fr]
> Sent: Monday, March 27, 2006 5:13 PM
> To: Michal Mihalik
> Subject: Re: [squid-users] squid performance epoll.
> 350req/sec 100% cpu
>
> Hi Michal,
> maybe send to list /proc/interrupts ?
> Regards
> Rmkml
>
>
> On Mon, 27 Mar 2006, Michal Mihalik wrote:
>
> > Date: Mon, 27 Mar 2006 17:31:36 +0200
> > From: Michal Mihalik <michal.mihalik@petitpress.sk>
> > To: squid-users@squid-cache.org
> > Subject: [squid-users] squid performance epoll. 350req/sec 100% cpu
> >
> > Hello.
> > I am tring to optimize squid for best possible performance.
> > it is in production and it's doing more than 350req/sec.
> At peaks upto
> > 500req/sec.
> >
> > My problem is only one. 100% cpu. :-)
> >
> > I tried to update my debian to 2.6.16 and recompiled squid:
> >
> > Squid Cache: Version 2.5.STABLE12
> > configure options: --prefix=/usr --exec_prefix=/usr
> --bindir=/usr/sbin
> > --sbindir=/usr/sbin --libexecdir=/usr/lib/squid
> --sysconfdir=/etc/squid
> > --localstatedir=/var/spool/squid --datadir=/usr/share/squid
> > --enable-async-io --with-pthreads
> --enable-storeio=ufs,aufs,diskd,null
> > --enable-linux-netfilter --enable-arp-acl
> --enable-removal-policies=lru,heap
> > --enable-snmp --enable-delay-pools --enable-htcp --enable-epoll
> > --enable-cache-digests --enable-underscores --enable-referer-log
> > --enable-useragent-log --enable-auth=basic,digest,ntlm --enable-carp
> > --with-large-files i386-debian-linux
> >
> > the thing I realy don't like is 25% cpu + 50% system cpu .
> >
> > why the 50% system!!!!!
> > can anyone help?
> >
> > Kind Regards
> > Michal Mihalik
> >
> >
>
Received on Mon Mar 27 2006 - 09:48:58 MST