Date: Wed, 26 Jan 2000 09:39:20 -0800 From: "Scott Hess" <scott@avantgo.com> To: <freebsd-hackers@freebsd.org> Subject: aio_read crashing certain kernels. Message-ID: <01b301bf6824$46e928a0$1e80000a@avantgo.com>
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Since nobody here seems to be able to figure it out... I wrote a program to play around with aio_read(), and it ran stellarly well on my FreeBSD3.4-release system using EIDE hard drives. But, when I tried to run it on a system using our production kernel with Adaptec SCSI controllers, it locked the kernel up HARD. No console messages, no Ctrl-Alt-Del, had to push the hard reset switch. The kernel in question is a FreeBSD3.4-release kernel compiled with a different set of options (lots of mbufs, etc, etc). I can't find anything in it that seems at all related to async I/O. The appropriate sysctl values all seem the same between the systems. And the fact that it locks the system up instead of saying ENOTSUPP or "async I/O not compiled in" concerns me greatly. Any ideas on why this might be happening? Thanks much, scott To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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