Re: Optimize update query

In later kernels these have been renamed:


Welcome to Ubuntu 12.04.1 LTS (GNU/Linux 3.2.0-32-generic x86_64)

$ sysctl -a|grep dirty
vm.dirty_background_ratio = 5
vm.dirty_background_bytes = 0
vm.dirty_ratio = 10
vm.dirty_bytes = 0
vm.dirty_writeback_centisecs = 500
vm.dirty_expire_centisecs = 3000

You the option of specifying either a ratio, or - more usefully for
machines with a lot of ram - bytes.

Regards

Mark

P.s: People on this list usually prefer it if you *bottom* post (i.e
reply underneath the original).


On 29/11/12 16:32, Niels Kristian Schjødt wrote:
> Hi, I have started to implement your suggestions . I have a small error so far though. The "vm.dirty_writeback_ratio
=1" command rerurns: 
>    error: "vm.dirty_writeback_ratio" is an unknown key
> I'm on ubuntu 12.04
>
>