El Viernes 08/03/2019 a las 16:09, David Richardson escribió:
I'm quoted! I'm famous! :)
With reason, your flock advise was thoroughly implemented in our infrastructure :)
And lately I (almost accidentally) realised the good effects of lowering vm.vfs_cache_pressure, reinforced after re-reading your email :)
There's two parts to what was quoted below:
Use flock to make sure you only have one update running. It'll do the right thing if something happens and the job exits abnormally. Someone else has already written a tool, so use their work instead of reinventing it yourself.
Tune vm.vfs_cache_pressure. In my experience, this makes the operations where you care about interactive performance (ls, du, find, rsync updates from upstream) MUCH faster, and has little impact on bulk-transfer performance.
Thanks, DR