Re: Default caching bind config very slow??
I do not have any of these problems with who, but I notice
one of my own. "w" and "who" give different answers.
$ w
10:50am up 5 days, 22:09h, 11 users, load average: 0.13, 0.10, 0.03
USER TTY LOGIN@ IDLE JCPU PCPU WHAT
root tty1 4:05pm 1:51 0:05 0:05 -bash
allen tty2 7:10pm 1:18 0:41 0:40 pine
allen tty3 7:03pm 108:32 0:52 0:50 -mc
allen tty4 7:03pm 0:02 0:03 0:00 w
allen tty5 10:29pm 795:00 0:01 0:01 -bash
allen tty8 10:34pm 145:18 0:01 0:00 -telnet.nossl
allen tty9 10:35pm 147:33 0:01 0:00 -ssh
allen tty12 10:30pm 740:20 0:00 0:00 -bash
au_ppp ttyS0 10:30pm 0:30 11:35 11:35 pppd auth login
You have mail in /var/spool/mail/allen
$ w
elm# who
root tty1 Aug 10 16:05
allen tty2 Aug 10 19:10
allen tty3 Aug 10 19:03
allen tty4 Aug 10 19:03
allen tty5 Aug 10 22:29
allen tty8 Aug 10 22:34
allen tty9 Aug 10 22:35
allen tty12 Aug 11 22:30
au_ppp ttyS0 Aug 10 22:30 (57600/26400 LAP-M)
murray ttyp0 Aug 12 07:49 (debian.fl.net.au)
murray ttyp1 Aug 9 11:24 (debian.fl.net.au)
elm#
"who" has two extra entries, which are wrong.
Running hamm with bind 8.1.1-2.
Lindsay
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Lindsay Allen <allen@cleo.murdoch.edu.au> Perth, Western Australia
voice +61 8 9316 2486 modem +61 8 9364-9832 32S, 116E
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On Mon, 11 Aug 1997, Jens B. Jorgensen wrote:
> Eloy A. Paris wrote:
> >
> > Same here: "who" takes quite a bit of time to run because it seems to be
> > trying to do a reverse DNS lookup. There is something strange here
> > because I have a local named process that serves my IN-ADDR.ARPA zone
> > so reverse lookups should be local and that should be pretty fast.
> >
> > Anyone has any ideas of what's going on with "who"?
> >
> > Thanks,
> >
> > E.-
> >
> > Donovan Baarda <abo@minkirri.apana.org.au> wrote:
> >
> > : I am using bind as a caching name server and have found that it seems to
> > : be very slow when doing reverse DNS lookups. In particular, it seems to be
> > : only caching them for about 5 minutes, and is very slow (up to 2 minutes)
> > : when it is not in the cache. It first showed up when using "who" with
> > : people telnet connected. "Who" likes to show the hostname telneted from.
> >
> > : Another thing interesting is the hostnames that are being looked up are in
> > : my /etc/hosts file, but still take ages. An strace of who shows that "who"
> > : is doing something with the hosts file, and then trying "named" and timing
> > : out and retrying a few times before it completes. There is nothing
> > : reported in my logs.
>
> Ditto here. I just upgraded our main office's slakware machine to
> Debian 1.3.1 and got complaints right away about "who" slowness.
>
> --
> Jens B. Jorgensen
> jjorgens@bdsinc.com
>
>
> --
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>
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