From owner-freebsd-isp  Fri Aug 13 14:29:56 1999
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Message-ID: <00ca01bee5d2$ecf7aca0$fca3f9cf@megared.net.mx>
From: "Alejandro Ramirez" <ales@megared.net.mx>
To: "Steve Hovey" <shovey@buffnet.net>, "Joe Nall" <joe@nall.com>
Cc: <lambert@cswnet.com>, <FreeBSD-ISP@FreeBSD.ORG>
References: <Pine.BSF.4.05.9908131247350.11175-100000@buffnet11.buffnet.net>
Subject: RE: pwd_mkdb and system processes
Date: Fri, 13 Aug 1999 16:29:29 -0500
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Hi,

How do you do it ???

Ales

----- Original Message -----
From: Steve Hovey <shovey@buffnet.net>
To: Joe Nall <joe@nall.com>
Cc: <lambert@cswnet.com>; <FreeBSD-ISP@FreeBSD.ORG>
Sent: Friday, August 13, 1999 11:47 AM
Subject: Re: pwd_mkdb and system processes


>
> Or just increase the cache size it uses to it gets done quicker
>
> On Fri, 13 Aug 1999, Joe Nall wrote:
>
> > lambert@cswnet.com wrote:
> > >
> > > I've been trying to track down a problem on my e-mail server where it
> > > stops processing smtp and pop processes for 5 minutes at a time.
> > >
> > > # wc -l /etc/passwd
> > >     14945 /etc/passwd
> > >
> > > We rebuild this file once per hour to add or remove customers.
> > >
> > > I finally caught it with a top session running at the time.
> > >
> > > Inetd was accepting new connections and starting popper but people
can't
> > > authenticate.
> > > Sendmail accepts new connections but they stall until pwd_mkdb goes
away.
> > >  When I try to run a command from the command line, it doesn't execute
> > > until pwd_mkdb gets done.
> > > The CPU is 97% idle during this time.
> > >
> > > Does all file access in the system stop while pwd_mkdb runs?
> > No but all password lookups do.  Both of theses commands rely on the
> > file you are rebuilding and the files involved are locked during the
> > process.  You might try  pwd_mkdp -d /tmp <> followed by a mv of the
> > relevant files into /etc or try pwd_mkdb -u <user> at the time the
> > passwd file gets modified and avoid the overhead of the total rebuild.
> > YMMV, I haven't used the -d option.
> > Joe
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
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> >
>
>
>
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