Date: Tue, 13 Jul 1999 14:16:54 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Noriyuki Soda <soda@sra.co.jp> Cc: Jason Thorpe <thorpej@nas.nasa.gov>, "Brian F. Feldman" <green@FreeBSD.ORG>, Noriyuki Soda <soda@sra.co.jp>, bright@rush.net, dcs@newsguy.com, freebsd-hackers@FreeBSD.ORG, jon@oaktree.co.uk, tech-userlevel@netbsd.org Subject: Re: Replacement for grep(1) (part 2) Message-ID: <199907132116.OAA80834@apollo.backplane.com> References: <199907131753.KAA22111@lestat.nas.nasa.gov> <199907131813.LAA79534@apollo.backplane.com> <199907132107.GAA14750@srapc342.sra.co.jp>
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:>>>>> On Tue, 13 Jul 1999 11:13:49 -0700 (PDT),
: Matthew Dillon <dillon@apollo.backplane.com> said:
:
:> Doh! Even solaris doesn't overcommit - you think it actually
:> reserves data blocks for its file-backed swap? Bzzt! It uses
:> an overcommit model too.
:
:Unlike 4.4BSD derived VM, Solaris VM has a way to reserve backing store.
:--
:soda
... and it doesn't mean squat. What, the absolutely critical server
that you are trying to run decides to exit because it can't guarentee
sufficient backing store? First of all, this situation simply does
not occur in a properly configured system. Secondly, for such a server
to fail to run is just as bad as if the system were to run out of swap.
IRIX has a swap reservation flag too, a left-over from the SysV days.
It is a totally useless flag.
-Matt
Matthew Dillon
<dillon@backplane.com>
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