Date: Sun, 15 Oct 2006 12:35:11 +0400 From: Sergey Zaharchenko <doublef-ctm@yandex.ru> To: current@freebsd.org Subject: Processes in "ufs" state (PR kern/104406) Message-ID: <20061015083511.GA13203@shark.localdomain>
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--WIyZ46R2i8wDzkSu Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello list! I've stumbled across this (probable) bug when doing some number-crunching. Processes which try to access the filesystem hang at some point when another process has been gobbling up CPU time for a sufficiently long time. Interestingly, processes which have already opened some files before the `hang' can apparently read/write them without hindrance (iostat shows some disk activity). Interactive processes run well too. When the number-cruncher is `kill -STOP'ped and `kill -CONT'ed, everything runs well for another while. It's reliably and frequently reproducible here both on recent and late August CURRENT, the kernel is GENERIC, the hardware is basic (no RAID, etc.). Could anyone experienced enough try to look into this and/or give advice for debugging the problem? I have ddb available, but I'm not sure about where to look. http://www.freebsd.org/cgi/query-pr.cgi?pr=3D104406 Thanks in advance, --=20 DoubleF No virus detected in this message. Ehrm, wait a minute... /kernel: pid 56921 (antivirus), uid 32000: exited on signal 9 Oh yes, no virus:) --WIyZ46R2i8wDzkSu Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFMfK/wo7hT/9lVdwRAhDVAJ0X0G+oUMkLS16Rt/SQCD4f/ngMMACdG5WC uC+kCnc8ADQrb7kkcy5D5Uk= =uLGY -----END PGP SIGNATURE----- --WIyZ46R2i8wDzkSu--
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