From owner-freebsd-stable Wed May 26 8:32: 2 1999 Delivered-To: freebsd-stable@freebsd.org Received: from xwin.nmhtech.com (xwin.nmhtech.com [208.138.46.10]) by hub.freebsd.org (Postfix) with ESMTP id 23FFE154A8 for ; Wed, 26 May 1999 08:31:59 -0700 (PDT) (envelope-from nicole@xwin.nmhtech.com) Received: by xwin.nmhtech.com (Postfix, from userid 1001) id 7E8D32EE1A; Wed, 26 May 1999 08:31:58 -0700 (PDT) Content-Length: 3724 Message-ID: X-Mailer: XFMail 1.2 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 In-Reply-To: Date: Wed, 26 May 1999 08:31:58 -0700 (PDT) From: Nicole Harrington To: Doug Rabson Subject: Re: kernel panic in 3.2 WAS Re: [Q] How stable is FreeBSD 3.X ? Cc: Sergey , freebsd-stable@FreeBSD.ORG, Andrew Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 25-May-99 My Secret Spies Reported That Doug Rabson wrote: > On Tue, 25 May 1999, Nicole Harrington wrote: > >> > Andrew >>=20 >> I too agree that 3.1 was Very stable and 3.2 for most things seems to b= e OK >> so >> far as I have used it for many things at the ISP I work for. However I = have >> come across a reproducable problem with 3.2. just as Sergey has spoken >> about, >> that does not seem to occur in 3.1. >>=20 >> I am testing the new FreeBSD port of the Inktomi caching server. The si= ze >> of >> the processes that are used can grow quite large and are multithreaded.= =20 >> I have found that if I set MAXDSIZ and DFLDSIZ too small (like >> 512*1024*1024) I >> can make the server page fault and reboot by making it work hard. (IE ma= ke >> the >> process grow) >>=20 >> SO far a setting of (2*1024*1024*1024) for both seems to be quite stabl= e >> under >> .any load, but it seems unsettling that rather than kill a process that = is >> demanding too much memory, the kernel page faults. Especially since the >> process >> runs as a user process not as a system process. >>=20 >> I am no expert on these things, but I welcome the assistance of anyone >> willing >> to help identify the root of this problem to make FreeBSD more stable. >> Flames >> and put downs about a lack of detail or knowlege like I have seen so far= , >> please >> send to the linux list of choice to save us both some time please. I use >> FreeBSD as it is a professional OS with mostly professional people willi= ng >> to >> lend a hand. >=20 > What message is printed when the kernel page faults. If there is an > instructions pointer in the message, use 'nm -n kernel' to find which > function it crashed in. If possible, compile a kernel with DDB, run it > until it crashes and get a backtrace. Getting a full kernel dump from a > kernel compiled for debugging (use config -g CONFIG for this) is > invaluable as it allows a developer to gather as much information as > possible. >=20 > Once you have a backtrace and/or a kernel dump, you need to get someone > interested in fixing it. Find out roughly what part of the system is > involved and see if you can figure out who worked on it last. If you talk > to that person and provide them with all the information you have > gathered, then you have a chance of getting a fix (or maybe only a > workaround). >=20 Ah, good point. I had built the kernel for DDB, but didn't get a readable result as I forgot to compile my kernel with -g.=20 I woun't be back at work until Friday, but I will try that and send a copy= to the list and submit it as suggested. My Error message was basicly the same = as the one Sergey had sent to the list however. I am still very curious why the kernel would panic so easily rather than k= ill the offending process..... Nicole > -- > Doug Rabson Mail: dfr@nlsystems.com > Nonlinear Systems Ltd. Phone: +44 181 442 9037 >=20 >=20 >=20 >=20 > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message |\ __ /| (`\ =20 | o_o |__ ) ) =20 // \\ =20 nicole@nmhtech.com | http://www.webweaver.net/ webmistress@dangermouse.org | http://www.dangermouse.org -------------------------(((---(((----------------------- =20 - Powered by Coka Cola and FreeBSD - - Strong enough for a man - But made for a Woman - =20 - I'm not ADD - I'm just Multithreaded - - Microsoft: What bug would you like today? - ---------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message