Date: Fri, 7 Jul 2000 10:44:22 -0700 From: Alfred Perlstein <bright@wintelcom.net> To: Marius Bendiksen <mbendiks@eunet.no> Cc: Bill Fumerola <billf@chimesnet.com>, freebsd-arch@FreeBSD.ORG Subject: Re: Alterations to vops Message-ID: <20000707104422.P25571@fw.wintelcom.net> In-Reply-To: <Pine.BSF.4.05.10007071941170.74828-100000@login-1.eunet.no>; from mbendiks@eunet.no on Fri, Jul 07, 2000 at 07:42:18PM %2B0200 References: <20000707080644.H25571@fw.wintelcom.net> <Pine.BSF.4.05.10007071941170.74828-100000@login-1.eunet.no>
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* Marius Bendiksen <mbendiks@eunet.no> [000707 10:42] wrote: > > I think it's AIX that has a tuneable per-process limit on outstanding > > IO. It would be an interesting thing to implement. > > A more complex I/O system, with scheduling and good async operation, > would also be interesting. For example, reads would be balanced more > evenly across tasks, while writes would be buffered for larger chunk > writes. We have that, see vfs_cluster.c, but if we could limit the outstanding IO per process whether read or write we could throttle procs so that they can't saturate the disks. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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