Date: Tue, 18 Oct 2016 07:46:13 -0500 (CDT) From: "Valeri Galtsev" <galtsev@kicp.uchicago.edu> To: "Steve O'Hara-Smith" <steve@sohara.org> Cc: freebsd-questions@freebsd.org Subject: Re: pw add user slow Message-ID: <60719.69.209.239.247.1476794773.squirrel@cosmo.uchicago.edu> In-Reply-To: <20161018074415.0f6575675db30d0b83d9b8ec@sohara.org> References: <fd1e578c-58ef-5098-9d89-c3db814d7af4@ifdnrg.com> <20161018074415.0f6575675db30d0b83d9b8ec@sohara.org>
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On Tue, October 18, 2016 1:44 am, Steve O'Hara-Smith wrote: > On Mon, 17 Oct 2016 23:36:33 +0100 > Paul Macdonald <paul@ifdnrg.com> wrote: > >> >> Hi, >> >> I have to migrate an imap server, which uses about 6000 local accounts >> for mail delivery >> >> I'm using a script that creates system acounts using: >> >> /usr/sbin/pw adduser $LOCAL_USER -u$UID-gGID-d $PATH -s/bin/false >> >> I'm finding this grows ever more slow, up to 10 seconds per account on a >> SATA box , and on a test SSD box ( 20 acc's per second initially) even >> that slows to about 1 account created per second. >> >> why does this slow down as more accounts are added? > > Because for each one it updates text files (passwd and > master.passwd) and regenerates databases (pwd.db and spwd.db) from the > text > files. The fastest way to do this sort of thing is to directly update > passwd and master.passwd and then run pwd_mkdb. It appears to be sufficient to only edit master.passwd; pwd_mkdb will re-generate passwd file from master.passwd. Valeri > > -- > Steve O'Hara-Smith <steve@sohara.org> > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++
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