Date: Tue, 7 Oct 2008 03:35:17 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Rajeshwar Patil <Rajeshwar.Patil@aricent.com> Cc: Ramachandran Sathyanarayanan <Ramachandran.Sathyanarayanan@aricent.com>, freebsd-questions@freebsd.org Subject: Re: sleep is not working to avoid starvation among threads of same priority Message-ID: <20081007103517.GA46537@icarus.home.lan> In-Reply-To: <B110A82B42E4E547B2A622349609CC1E2D21B52F61@GUREXMB02.ASIAN.AD.ARICENT.COM> References: <B110A82B42E4E547B2A622349609CC1E2D21B52F61@GUREXMB02.ASIAN.AD.ARICENT.COM>
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On Tue, Oct 07, 2008 at 03:34:41PM +0530, Rajeshwar Patil wrote: > I have two threads of same priority lets say thread A and thread B, > thread A is starving since thread B has got a for loop of size 100k. > So, to avoid starvation I am processing 1000 iterations of for > loop(that of thread B) in one batch and giving sleep of 1ms, but still > thread A is starving. If I increase the batch size used in for loop > from 1k to 10k then starvation of thread A is little less whereas it > should be more as Im increasing processing time of thread B. I tried > various combinations of sleeps and batches, but I couldnt solve the > starvation of thread A. > > Is the sleep right solution? > > I will be grateful if someone could answer on this. This might be a question for freebsd-hackers, which is more developer-oriented than -questions. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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