Date: Mon, 8 Apr 1996 05:50:33 -0400 (EDT) From: hoek@freenet.hamilton.on.ca To: Andrew Foster <adf@cafu.fl.net.au> Cc: freebsd-bugs@FreeBSD.org, Rob Wise <cinder@cafu.fl.net.au> Subject: Re: Machines locking Message-ID: <Pine.SOL.3.91.960408053120.12168A-100000@james.freenet.hamilton.on.ca> In-Reply-To: <Pine.BSF.3.91.960408121643.13249A-100000@cafu.fl.net.au>
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On Mon, 8 Apr 1996, Andrew Foster wrote: > - pings return > - some programs will still work via opening a socket (e.g. telnetting to > port 80 will sometimes work, but not always) > - I can telnet in (no connection refused) but nothing will happen > - I can switch vtys at the console > - Pressing enter at the console login prompt will redisplay the banner > - Entering a username and pressing enter will do nothing - the machine just > sits there > - The only way to fix it is to press reset > - My syslog.conf mentions a file which doesn't exist - as a result when I > press C-A-D I see a syslogd error - so the machine tries to respawn > something (this is my guess) but can't. I can cause the exact same thing to occur on my machine (2.1-Release), right up to (and including) the syslogd error complaining about the /var/log/lpd-errs file I rm'd but never got around to replacing (although, I've never had the opportunity to try pinging my machine when it's locked like this) by logging onto 4 vtys at once. It didn't start until I'd changed my login shell to bash (or was it until I added 'tset' to ~/.profile?), although, it could just be that had I logged into 7 or 8 vtys with csh it would've locked up, too. My conclusion was that since, technically, the GENERIC kernel isn't supposed to run on 4MB machines (like mine) running a large number of processes at a time would kill it. Guessing that each copy of bash started probably fork()'ed and exec()'ed several zillion times, I assumed that this was the problem (although, AFAIK, it's never happened except when logging in). Since you have 16MB ram, that doesn't help my theory. :( From looking into it at the time, I seem to remember that the current process one of the times was still getty, but don't hold me to that. -- Outnumbered? Maybe. Outspoken? Never! tIM...HOEk
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