Date: Sat, 10 May 2003 13:50:45 -0400 (EDT) From: Robert Watson <rwatson@FreeBSD.ORG> To: Paul Richards <paul@freebsd-services.com> Cc: current@FreeBSD.ORG Subject: Re: Interrupt latency problems Message-ID: <Pine.NEB.3.96L.1030510134758.41654N-100000@fledge.watson.org> In-Reply-To: <1052585648.27195.19.camel@cf.freebsd-services.com>
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On 10 May 2003, Paul Richards wrote: > Is everyone seeing this? If not then perhaps we can narrow down the > problem and look at getting things improved before 5-stable, because if > it stays like this it's not really what I'd consider useable. If you look at the 5.2-RELEASE feature requirements, you'll see that they include fine-grained locking for ATA to mitigate this problem. I know there's work-in-progress to look at issues relating to CAM and the various storage drivers as well. You can take a look at the driver status page to see the status of various hardware drivers -- http://www.FreeBSD.org/projects/busdma/ I believe. It's grown from "do drivers handle busdma" to "which drivers are MPsafe to various degrees, 64-bit safe, etc". Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Network Associates Laboratories
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