Date: Tue, 21 Sep 2004 12:15:05 -0700 From: Julian Elischer <julian@elischer.org> To: Stephan Uphoff <ups@tree.com> Cc: "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org> Subject: Re: scheduler (sched_4bsd) questions Message-ID: <41507DB9.4030007@elischer.org> In-Reply-To: <1095788468.53798.92.camel@palm.tree.com> References: <1095468747.31297.241.camel@palm.tree.com> <200409181653.35242.jhb@FreeBSD.org> <414D30EC.1000104@elischer.org> <200409201446.15278.jhb@FreeBSD.org> <414F7DA3.6090409@elischer.org> <1095788468.53798.92.camel@palm.tree.com>
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> > >Great news ! - I actually switched target machines just when this >started to happen and thought the cdrom of the new target was bad and >disconnected it ;-) > >I reconnected it this morning and did a little debugging. >Looks like an interrupt race condition in the ata code. >Can you try the following patch? > awsome! ---------------- ad0: 9541MB <ST310211A/3.39> [19386/16/63] at ata0-master UDMA100 ATAPI_RESET time = 50us acd0: CDROM <CDU5211/YYS2> at ata1-master PIO4 Mounting root from ufs:/dev/ad0s1a ------------------ notice there is still a single reset message, that doesn't appear without PREEMPTION but now boots take less than 5 minutes :-)
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