Date: Fri, 17 Apr 2009 11:49:28 +0200 From: Peter Schuller <peter.schuller@infidyne.com> To: Ben Kelly <ben@wanderview.com> Cc: freebsd-current@freebsd.org, Artem Belevich <fbsdlist@src.cx> Subject: Re: [patch] zfs livelock and thread priorities Message-ID: <20090417094927.GA38912@hyperion.scode.org> In-Reply-To: <B9234D72-B5A9-4A35-940F-F70AA02BBFFB@wanderview.com> References: <DC9F2088-A0AF-467D-8574-F24A045ABD81@wanderview.com> <49C2CFF6.8070608@egr.msu.edu> <BDABA909-C2AE-4A55-869B-CA01BE778A82@wanderview.com> <ed91d4a80904131636u18c90474w7cdaa57bc7000e02@mail.gmail.com> <08D7DC2A-68BE-47B6-8D5D-5DE6B48F87E5@wanderview.com> <AC3C4C3F-40C6-4AF9-BAF3-2C4D1E444839@wanderview.com> <ed91d4a80904142135n429dea52o672abf51116fa707@mail.gmail.com> <20090416132302.GA86096@hyperion.scode.org> <B9234D72-B5A9-4A35-940F-F70AA02BBFFB@wanderview.com>
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--tKW2IUtsqtDRztdT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > I find it odd that they would pause for up to 5 seconds, though. I =20 > would expect the throttling to occur over a much smaller time span. =20 > Do you see similarly large pauses in disk I/O during a scrub? It was 1 second bursts, one per 5 second transaction commit period yes. My memory is too fuzzy on the details, but it was consistent with my interpretation of the source.=20 --=20 / Peter Schuller PGP userID: 0xE9758B7D or 'Peter Schuller <peter.schuller@infidyne.com>' Key retrieval: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org --tKW2IUtsqtDRztdT Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (FreeBSD) iEYEARECAAYFAknoUKcACgkQDNor2+l1i33ydwCglLWPbp4ZEaU1rTWSaDBOk0Cj aMYAnjRynOzS9vnAZ0xTYLmV+saK697E =HL2O -----END PGP SIGNATURE----- --tKW2IUtsqtDRztdT--
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