DragonFly kernel List (threaded) for 2004-06
Re: DragonFly faster than linux or FreeBSD?
-On [20040616 23:02], Matthew Dillon (dillon@xxxxxxxxxxxxxxxxxxxx) wrote:
> Heavy I/O activity should only really have a 'glitch' effect in regards
> to processes competing for disk I/O. Other possibilities include overheads
> that occur if (e.g.) your IDE drive is not operating in a DMA mode.
> You can query the DMA modes with 'atacontrol'. e.g. on my AMD-XP box:
# atacontrol mode 0
Master = UDMA100
Slave = ???
> That said, however, I will say that I have noticed plenty of mouse
> glitching and terminal-opening delays on my workstation, so I know that
> there is definitely an issue somewhere. It could be a glitch in the
> scheduler's priority handling.
I've encountered it a lot with just normal compilation runs (for TenDRA)
with no -j flag where memory constraints were tight so the swapper has to do
some work. Perhaps this gives you a data point Matt.
Jeroen Ruigrok van der Werven <asmodai(at)wxs.nl> / asmodai / kita no mono
PGP fingerprint: 2D92 980E 45FE 2C28 9DB7 9D88 97E6 839B 2EAC 625B
http://www.tendra.org/ | http://diary.in-nomine.org/
Those who cannot remember the past are condemned to repeat it...