25 Jul
2013
25 Jul
'13
2:58 p.m.
On Thu, Jul 25, 2013 at 4:35 AM, Gaetan Bisson <bisson@archlinux.org> wrote:
[2013-07-24 21:27:11 -0600] Chris Moline:
I installed anything-sync-daemon but I have no idea what to sync.
General question: isn't the effect of that software exactly the same thing as increasing the vm.dirty_expire_centiseconds kernel parameter?
Except maybe in the case of a given application calling sync() all the time, but then it usually has a good reason to do so (such as the written data being too important to be in cache during a power cut).
-- Gaetan
Yeah, it shouldn't increase performance except where it's causing possible data loss by ignoring `fsync`/`fdatasync`. There's no need to "guess and benchmark" because the kernel is already managing this for you.