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From Cliff Skolnick <cl...@organic.com>
Subject Re: WWW Form Bug Report: "Long Pauses" on BSDI (fwd)
Date Tue, 28 Nov 1995 23:21:07 GMT


I've seen name service problems do this also.  Can you have him turn
off reverse DNS for his log?

On Tue, 28 Nov 1995, Rob Hartill wrote:

> 
> Any thoughts?
> 
> I suggested nameserver/listen()  as possible bottlenecks, but
> he thinks not........
> 
> cc any suggestions to the submitter .
> 
> 
> > From jmiller@mwci.net  Tue Nov 28 11:39:05 1995
> > Date: Tue, 28 Nov 1995 13:36:09 -0600
> > Message-Id: <199511281936.NAA27405@subcellar.mwci.net>
> > X-Sender: jmiller@205.254.160.2
> > X-Mailer: Windows Eudora Version 1.4.4
> > Mime-Version: 1.0
> > Content-Type: text/plain; charset="us-ascii"
> > To: apache-bugs@hyperreal.com
> > From: jmiller@mwci.net (Jeremie Miller)
> > Subject: Re: WWW Form Bug Report: "Long Pauses" on BSDI
> > 
> > >> 
> > >> Submitter: jmiller@mwci.net
> > >> Operating system: BSDI, version: 2.0
> > >> Extra Modules used: dbm auth
> > >> URL exhibiting problem: 
> > >> 
> > >> Symptoms:
> > >> --
> > >> For 5 to 10 minutes at seemingly random times, apache 1.0.0 (also
> > happened in 0.8.16) will pause and take a few requests only, and take them
> > VERY slowly (one to two minute wait).  After about ten minutes, it will pick
> > back up and take off, or after a kill -1 it will also take off again and
> > pick up the 30-40 waiting requests.  I havent seen any strange occurences in
> > the error_log or any other strange behavior.  One note, the machiene
> > recieves about 3/4 million requests per day, and serves approx 2Gig/day.
> > >> --
> > >> 
> > >
> > >Two possible sources for the problem
> > >
> > >  1) nameserver bottlenecks.
> > >	   solution - switch off name lookups
> > 
> > They already are off (3/4 million hits/lookups, ouch!)
> > 
> > >  2) listen queue bottlenecks
> > >	   solution - reconfigure the kernel to allow more socket
> > >	    connections to be negotiated before being accepted.
> > 
> > Probably not the problem, 0.8.14 works flawlessly, and we backed up to that.
> > Were there major networking code changes that might be the cause from 8.14
> > to 8.16???
> > 
> > Also, before we backed down to 8.14, we had numerous machiene lockups for no
> > apparent reason.  Any help is appreciated, we want to keep up to the latest
> > version.
> > 
> > Thanks,
> > 
> > Jeremie Miller
> > jmiller@mwci.net
> > 
> > 
> > 
> 
> 

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