From owner-freebsd-java Fri Mar 8 18:32:17 2002 Delivered-To: freebsd-java@freebsd.org Received: from Millions.Ca (h-207-228-120-32.gen.cadvision.com [207.228.120.32]) by hub.freebsd.org (Postfix) with ESMTP id 64C9E37B417 for ; Fri, 8 Mar 2002 18:32:08 -0800 (PST) Received: (from uucp@localhost) by Millions.Ca (8.11.1/8.9.3) id g292W7j10966 for ; Fri, 8 Mar 2002 19:32:07 -0700 (MST) (envelope-from stacy@Millions.Ca) Received: from Cedar.Millions.Ca(192.168.64.8) via SMTP by mail-gw-0.millions.ca, id smtpda10964; Fri Mar 8 19:32:02 2002 Received: from millions.ca (Maple.Millions.Ca [192.168.64.2]) by cedar.millions.ca (8.11.1/8.11.3) with ESMTP id g292W1l14538 for ; Fri, 8 Mar 2002 19:32:01 -0700 (MST) (envelope-from stacy@millions.ca) Message-ID: <3C897420.7A4C1061@millions.ca> Date: Fri, 08 Mar 2002 19:32:01 -0700 From: Stacy Millions Organization: Millions Consulting Limited X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: "FreeBSD Java mailing list (E-mail)" Subject: Re: 1.3.1p6 dies sigbus with threads References: <59063B5B4D98D311BC0D0001FA7E452205FDA3A4@l04.research.kpn.com> <3C7BDF7E.D8645D7@millions.ca> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-java@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Stacy Millions wrote: > Another data point, I have a simple test program that has the same > result (as my kids would say, "java goes 'trip, thud'") just by using > SecureRandom (who fires of a whole load of threads). You have to > run it about 50 times, but eventually it will dump core. I made > it a Swing app to get the additional AWT and friends threads to help > speed up the "trip, thud" process. I took some time (can you say "was frustrated doing other things" :-) to try and track this down a bit more. I modified my test program to fire up a bunch of noise threads (much like what SeedGenerator does) and it increased the likelihood of a core dump (to about 1 in 5 instead of 1 in 50). The stack trace is the same in all cases. The annoying part is, if I run in java_g, I don't get a core dump! I hate bugs like that. -stacy -- You'll see it's all a show. Keep 'em laughing as you go. Just remember that the last laugh is on you. - Monty Python _The Life Of Brian_ Stacy Millions stacy@millions.ca Millions Consulting Limited To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-java" in the body of the message