Problems with Windows threads and cygwin sleep()
Dave Korn
dave.korn@artimi.com
Thu Aug 25 12:38:00 GMT 2005
----Original Message----
>From: Corinna Vinschen
>Sent: 25 August 2005 13:09
>
> Even if we can't do much about it, it would be interesting to find out
> how Cygwin affects CPU usage of non-Cygwin processes.
>
When I moved from 2k to XP I noticed that running big cross compiles in
the background in a bash shell was much more obtrusive than it used to be,
and could cause other (gui) apps to be unresponsive and stall; I always use
taskmanager to lower the priority of my bash shells these days.
I think that MS must have buggered up^W^W'improved' their scheduler
between 2k and XP, and this interaction is a result. My first guess is that
there's some competition for a locked resource of some kind, and this
particularly interferes with scheduling under heavy load, but that's only a
guess at the moment. I think tracking this one down might be easiest with a
proper windbg/remote kernel debug setup.
cheers,
DaveK
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