Date: Thu, 19 Aug 1999 13:00:57 -0500 From: "Alejandro Ramirez" <ales@megared.net.mx> To: "Mike Harshbarger" <mharsh@fsr.net>, <freebsd-isp@FreeBSD.ORG> Subject: RE: pwd_mkdb and system processes Message-ID: <006f01beea6c$ca62e940$d4630a0a@megared.net.mx> References: <Pine.BSF.3.96.990818113022.7774f-100000@archer.fsr.net>
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Hi,
In FreeBSD 3.2, you can do this, from the man page:
-u username
Only update the record for the specified user. Utilities that
op-
erate on a single user can use this option to avoid the overhead
of
rebuilding the entire database.
Ales
----- Original Message -----
From: Mike Harshbarger <mharsh@fsr.net>
To: <freebsd-isp@FreeBSD.ORG>
Sent: Wednesday, August 18, 1999 1:43 PM
Subject: Re: pwd_mkdb and system processes
>
> Wow! What a change... 12K accounts and the pwd_mkdb run time dropped from
> 140 seconds down to 16 seconds. 6 Meg cache seemed optimal for me.
>
> Also, I've always been disappointed at the speed of the 'pw' command...
> especially with all the 'pw usermod's I get to do daily. It seems like it
> took 5 minutes. 'pw' seems to have sped up similarly with this change.
>
> On a related note, is there any chance in the future of the 'pw' command
> supporting a command line option like pwd_mkdb's '-u' so it doesn't have
> to reconstruct entire password databases?
>
> ___ ___ ___
> | __/ __|_ _| Mike Harshbarger, First Step Internet
> | _|\__ \| | System & Network Administrator
> |_| |___/___| (208) 882-8869 / 1-888-676-6377
>
>
> On Fri, 13 Aug 1999 lambert@cswnet.com wrote:
>
> > That did it. It went from 4:40 seconds to 20 seconds. I just gave it a
> > cache size of 10 MB on the command line args. I could probably tune it
> > down from there but I'm not into swap on this box anyway so it isn't
> > hurting me and as my userbase grows it will handle the load.
> >
> > Thanks,
> >
> > In <Pine.BSF.4.05.9908131247350.11175-100000@buffnet11.buffnet.net>, on
> > 08/13/99
> > at 12:47 PM, Steve Hovey <shovey@buffnet.net> said:
> >
> > >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
> > >> with "unsubscribe freebsd-isp" in the body of the message
> > >>
> >
> >
> >
> > --
> > Scott Lambert
> > lambert@cswnet.com
> > Systems and Security Administrator
> > CSW Net, Inc.
> > ================================================================
> > Written: Friday, August 13, 1999 - 12:40 PM
> >
> >
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-isp" in the body of the message
> >
>
>
>
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