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Date: Wed, 21 Feb 2007 11:46:23 +1300 From: "Ian McDonald" <ian.mcdonald@...di.co.nz> To: "bert hubert" <bert.hubert@...herlabs.nl>, "Rick Jones" <rick.jones2@...com>, "Evgeniy Polyakov" <johnpol@....mipt.ru>, "Josef Sipek" <jsipek@....cs.sunysb.edu>, "Andi Kleen" <andi@...stfloor.org>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: all syscalls initially taking 4usec on a P4? Re: nonblocking UDPv4 recvfrom() taking 4usec @ 3GHz? On 2/21/07, bert hubert <bert.hubert@...herlabs.nl> wrote: > I'm trying to figure out which processes have the most impact, I had already > killed anything non-essential. But that still leaves 140 pids. > > Bert > That sounds way too many pids. I run a script to shut down processes when I do testing as it makes a HUGE difference to my timing of things which can be quite critical. Here's my list of 46 and that includes me sshing into a box and checking for processes: UnID PID PPID CMD root 1 0 init [2] root 2 1 [ksoftirqd/0] root 3 1 [watchdog/0] root 4 1 [events/0] root 5 1 [khelper] root 6 1 [kthread] root 40 6 [kblockd/0] root 41 6 [kacpid] root 110 6 [cqueue/0] root 111 6 [ata/0] root 112 6 [ata_aux] root 113 6 [kseriod] root 135 6 [rt-test-0] root 137 6 [rt-test-1] root 139 6 [rt-test-2] root 141 6 [rt-test-3] root 143 6 [rt-test-4] root 145 6 [rt-test-5] root 147 6 [rt-test-6] root 149 6 [rt-test-7] root 151 6 [pdflush] root 152 6 [pdflush] root 153 6 [kswapd0] root 154 6 [aio/0] root 838 6 [kedac] root 843 6 [kjournald] root 1720 6 [ksuspend_usbd] root 1721 6 [khubd] root 1741 6 [kpsmoused] root 2544 1 /sbin/syslogd root 2554 1 /sbin/klogd -x root 2851 1 /usr/sbin/inetd root 2863 1 /usr/sbin/sshd ntp 2954 1 /usr/sbin/ntpd -p /var/run/ntpd.pid -u 111:111 -g root 3061 1 /bin/login -- root 3062 1 /sbin/getty 38400 tty2 root 3063 1 /sbin/getty 38400 tty3 root 3064 1 /sbin/getty 38400 tty4 root 3065 1 /sbin/getty 38400 tty5 root 3066 1 /sbin/getty 38400 tty6 ian 3083 3061 -bash root 21518 2863 sshd: ian [priv] ian 21520 21518 sshd: ian@.../1 ian 21521 21520 -bash ian 21747 21521 ps -ef -- Web: http://wand.net.nz/~iam4 Blog: http://iansblog.jandi.co.nz WAND Network Research Group - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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