Date: Thu, 22 May 2003 10:19:26 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: Dan Nelson <dnelson@allantgroup.com> Cc: Daniel Eischen <eischen@pcnet1.pcnet.com> Subject: Re: libkse and SMP (was Re: USB bulk read & pthreads) Message-ID: <Pine.BSF.4.21.0305221016260.82473-100000@InterJet.elischer.org> In-Reply-To: <20030522165229.GA1694@dan.emsphone.com>
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On Thu, 22 May 2003, Dan Nelson wrote: > In the last episode (May 22), Terry Lambert said: > > Make sure you use SCHED_4BSD, rather than SCHED_ULE, if you are using > > one of the kernel threads libraries, for now. > > > > You really should read the -current archives before attempting any of > > this, if you don't follow -current closely enough to have caught > > Jeff's message on this, or which kernel threading libraries are > > available. > > I do read -current, and I'm definitely not going anywhere near > SCHED_ULE. I just tested both libraries with today's kernel and > libraries, and was able to get a hard lockup with both libthr and > libkse. Mysql seems to run okay. Starting a threaded pike process > seems to be the killer. Unfortunately, pike's a pretty large app so > it's not easy to get a stripped-down testcase. Ok so we need to get a description of this 'lockup'. 1/ does teh whole system lock up? 2/ is this SMP? (how many cpus)? 3/ does the system respond to pings? 4/ do you have teh kernel dbugger installed, and if you do, does it respond on the console to <CTL><ALT><ESC>. You may have to start you app from outside X11 on a console to be able to see the console once it has frozen if it si an X app. 5/ if it DOES go into ddb, what does 'ps' show? 6/ got a serial console? > > -- > Dan Nelson > dnelson@allantgroup.com >
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