antirez/redis — Issue #294: Performance spikes on Ubuntu 11.04 with Redis 2.4.6
Author: balepc
Created: 2012-01-13 15:53:50+00:00
State: open

After migrating our database to Redis 2.4.6 - Ubuntu 11.04. I've started noticing performance spikes during the work.

Spikes happens about once a minute. From 5-6% CPU to 70-80%. Interrupts rate is also quite high 6-7%. Mostly they are timer0 interrupts.

After migrating down to Ubuntu 10.04 with Redis 2.4.4 interrupts gone, but still see small CPU spikes from 2-4% to 13-19%