[CentOS] tick_divider

Scott McClanahan

scott.mcclanahan at trnswrks.com
Thu Dec 6 15:47:14 UTC 2007


Just installed CentOS 5.1 on VMware ESX and am attempting to play with
the newly added tick_divider feature.  It doesn't seem to be making any
difference in the number of timer interrupts though.  I set
tick_divider=10 which should reduce the number of timer interrupts to
100.

I wrote a nasty little scripts that queries /proc/interrupts every 1
second and still see an increase each second in about 1000 interrupts.  

The server is:

uname -srvmpio

Linux 2.6.18-53.1.4.el5 #1 SMP Fri Nov 30 00:45:16 EST 2007 i686 i686
i386 GNU/Linux

Obviously not running 64bit.  Only one cpu has been allocated to this
vm.  Has anybody else used this successfully?




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