On May 16, 2012, at 4:06 PM, Peter Jeremy wrote: > I recently ran "make delete-old" on a -current box and felt it was > rather slow. That prompted me to do some more careful experiments. > > On one box where I have both 8-stable and 9-stable available, there > was a ~30x slowdown (based on 5 runs, ignoring the first). I don't > have a -current world on that box so I can't directly compare but on > another pair of fairly similar boxes, I get a ~180x slowdown between > 8-stable and -current (and that figure is probably optimistic since > the -current box was idle whereas the 8-stable box was fairly busy). > > I realise that "make delete-old" isn't something you nede to do every > day but going from sub-second to multi-minute duration is quite > noticable. Can anyone suggest what has caused the change? > > -- > Peter Jeremy Right now, I believe the most useful comparison between systems is (assuming UFS is in play) the output of "tunefs -p" for the filesystem that the slowness is appearing on. SoftUpdates (and whether it's enabled or disabled) can play a huge difference in how fast file-deletions are. Also note that SU+J may be interesting if-set in 9 (while not available in 8). -- Devin _____________ The information contained in this message is proprietary and/or confidential. If you are not the intended recipient, please: (i) delete the message and all copies; (ii) do not disclose, distribute or use the message in any manner; and (iii) notify the sender immediately. In addition, please be aware that any message addressed to our domain is subject to archiving and review by persons other than the intended recipient. Thank you.Received on Wed May 16 2012 - 23:11:41 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:27 UTC