Date: Wed, 17 Jan 2001 20:47:48 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: John Baldwin <jhb@FreeBSD.org> Cc: current@FreeBSD.org, arch@FreeBSD.org, Randell Jesup <rjesup@wgate.com>, Soren Schmidt <sos@freebsd.dk>, Alfred Perlstein <bright@wintelcom.net> Subject: Re: HEADS-UP: await/asleep removal imminent Message-ID: <54340.979760868@critter> In-Reply-To: Your message of "Wed, 17 Jan 2001 10:55:09 PST." <XFMail.010117105509.jhb@FreeBSD.org>
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In message <XFMail.010117105509.jhb@FreeBSD.org>, John Baldwin writes: > >On 17-Jan-01 Poul-Henning Kamp wrote: >> >>>Perhaps you can explain how you're able to trigger this instability >>>with a test script? Poul-Henning told me he just needed to do a >>>make -j256 world, I did 10 of them without a problem... >> >> Then you misunderstood me, I don't have anything in the dept >> of SMP hw which can trigger it. > >Ok, what _does_ trigger this then? My theory is that it's related to disk-IO. My guess is that it may be related to calling a *_strategy() routine from an interrupt routine. That is what sets ccd, ata-raid and vinum apart from normal disk-IO. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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