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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.mel.connect.com.au!news.mira.net.au!pumpkin.pangea.ca!eru.mt.luth.se!www.nntp.primenet.com!nntp.primenet.com!howland.erols.net!newsfeed.internetmci.com!in2.uu.net!atmnet.net!news.lightside.com!calcium.shocking.com!user From: fred@lightside.net (Fred Condo) Newsgroups: comp.infosystems.www.servers.unix,comp.unix.bsd.freebsd.misc Subject: Re: Apache 1.1.1 Dumping Core Date: Wed, 25 Sep 1996 01:27:57 -0700 Organization: Lightside, Inc. - Internet Access Lines: 32 Message-ID: <fred-2509960127580001@calcium.shocking.com> References: <dlt-2309960726280001@news.csun.edu> NNTP-Posting-Host: calcium.shocking.com Mime-Version: 1.0 Content-Type: text/plain;charset=US-ASCII Content-Transfer-Encoding: 7bit x-no-archive: yes Xref: euryale.cc.adfa.oz.au comp.infosystems.www.servers.unix:19722 comp.unix.bsd.freebsd.misc:28016 In article <dlt-2309960726280001@news.csun.edu>, dlt@csun.edu (David Thompson) wrote: >I'm seeing a LOT of these messages in my error_log. Should I be concerned? > >[Mon Sep 23 07:19:24 1996] httpd: caught SIGSEGV, dumping core >[Mon Sep 23 07:19:31 1996] httpd: caught SIGSEGV, dumping core >[Mon Sep 23 07:19:31 1996] httpd: caught SIGSEGV, dumping core Yes! This problem occurs when you have "too many" Virtual Hosts. "Too many" seems to depend on random variables: one FreeBSD machine I know cannot run even a single Virtual Host without dropping SIGSEGV on every hit. Another machine I know can run 7 Virtual Hosts without problems, but adding an 8th causes some, but not all, of the Virtual Hosts to drop a SIGSEGV. Every time you see one of those error messages, the person browsing got "Document contains no data," so this bug is Web death. I have a report that the same problem occurs under BSDI (I have been working with FreeBSD). This suggests the problem is an interaction between Apache and the BSD network code base. Interestingly, I have never seen this problem on SysVR2-based A/UX. This is a critical problem, and I am disheartened that my previous posts about it have been ignored. I think the FreeBSD and Apache people need to talk with each other. -- http://www.lightside.net/~fred/ + net access + http://www.lightside.net/ "Attempts to control the use of encryption technology are wrong in principle, unworkable in practice, and damaging to the long term economic value of the information networks." - UK Labour Party