On Thu, Jul 25, 2013 at 4:35 AM, Gaetan Bisson <bisson@xxxxxxxxxxxxx> 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.
