Date: Tue, 28 Feb 2006 12:38:58 -0800 From: othermark <atkin901@yahoo.com> To: freebsd-stable@freebsd.org Subject: Re: "sio12: 178 more interrupt-level buffer overflows" on 6.1-PRERELEASE Message-ID: <du2cd2$g4v$1@sea.gmane.org> References: <20060227203625.GA19758@intserv.int1.b.intern> <20060227221844.GA21696@intserv.int1.b.intern>
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Holger Kipp wrote: > On Mon, Feb 27, 2006 at 09:36:25PM +0100, Holger Kipp wrote: >> Hello, >> >> This looks like PR 51982 > > Yes - I just recompiled my kernel with the suggested > change to sio.c, and the problem goes away... hmm. > > >> Feb 27 21:03:17 dialout kernel: sio12: 24 more interrupt-level buffer >> overflows (total 433) Feb 27 21:03:56 dialout kernel: sio12: 178 more >> interrupt-level buffer overflows (total 611) Feb 27 21:04:13 dialout >> kernel: sio12: 71 more interrupt-level buffer overflows (total 682) Feb >> 27 21:05:56 dialout kernel: sio12: 172 more interrupt-level buffer >> overflows (total 854) Feb 27 21:06:06 dialout kernel: sio12: 79 more >> interrupt-level buffer overflows (total 933) Feb 27 21:06:07 dialout >> kernel: sio12: 4 more interrupt-level buffer overflows (total 937) Feb 27 >> 21:07:56 dialout kernel: sio12: 23 more interrupt-level buffer overflows >> (total 960) Feb 27 21:08:06 dialout kernel: sio12: 26 more >> interrupt-level buffer overflows (total 986) Yep, I get that on three different machines. The faster the machine, the less likely to overflow. And as you saw, increasing the multiplier fixes the problem. That "patch" would make a good tunable candidate either for the multiplier or the actual buffer value. -- othermark atkin901 at nospam dot yahoo dot com (!wired)?(coffee++):(wired);
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