Date: Thu, 17 Mar 2005 03:03:05 +0100 From: Emanuel Strobl <emanuel.strobl@gmx.net> To: freebsd-current@freebsd.org Cc: Denis Shaposhnikov <dsh@neva.vlink.ru> Subject: md (file backed) performance [Was: Re: unionfs 5.4] Message-ID: <200503170303.12403@harrymail> In-Reply-To: <20050316202334.W20708@mail.chesapeake.net> References: <87is46kzk1.fsf@neva.vlink.ru> <200503170222.07169@harrymail> <20050316202334.W20708@mail.chesapeake.net>
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--nextPart92589670.D0XGC4SkiY Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Am Donnerstag, 17. M=E4rz 2005 02:24 schrieb Jeff Roberson: > On Thu, 17 Mar 2005, Emanuel Strobl wrote: > > Am Mittwoch, 16. M=E4rz 2005 07:16 schrieb Sergey Matveychuk: > > > Jeff Roberson wrote: > > > >>just ffs: 1:47 min > > > >>nullfs: 1:43 min (oops!:) > > > >>nullfs in jail: 12:12 min > > > >> > > > >>Almost ten times degradation. > > > > > > > > Can you try this again on current? I just committed some changes to > > > > nullfs which vastly simplify the locking. I don't see anything > > > > inherent in the code that should cause such a slowdown. > > > > > > The problem has gone. Thanks Jeff! > > > Don't forget MFC it some time :) > > > > Highly appreciated for 5.4!!! > > I can't MFC this for 5.4, it requires too much of the new vfs architecture > to properly function. I'll mail re@ to see what their opinion is for 5.5. Oic. I haven't tracked -current since christmas so I'd like to ask if you k= now=20 anything new about file backed md performance. I wanted to use that for jail systems but performance was really bad. Does your great work also improve md behaviour? Thank you very much, =2DHarry --nextPart92589670.D0XGC4SkiY Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQBCOOVgBylq0S4AzzwRAjX9AJ0bork9qBcoPZ4q9hTCEvT5zM/Y5ACfQiSm N2DVnmICRqby5ql/KNU7GmU= =lz6Q -----END PGP SIGNATURE----- --nextPart92589670.D0XGC4SkiY--
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