Redis BGSAVE on Linux VM

2
votes

On high loads, I'm experiencing server hiccups on a RHEL Linux VM, when a server does BGSAVE.

This is issue is not happening in a physical box.

What's the best solution for fixing this in a VM?

We are using RDB dumps and AOF is disabled.

$uname -a

Linux akm 2.6.18-238.5.1.el5 #1 SMP Mon Feb 21 05:52:39 EST 2011 x86_64 x86_64 x86_64 GNU/Linux

Redis version: 2.2.12

1
linuxperformanceredis

1 Answers

1
votes

Are you experiencing high memory load? When Redis does a BGSAVE, it forks the process. This effectively doubles the amount of memory it's taking up. If this causes your box to swap, it could bring everything to a screeching halt.

Solution: Add more memory or try to reduce the size of your database.