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Date: Sun 18-Aug-1991 21:22:45 From: barry@arnold.math.ucla.edu (Barry Merriman) Subject: swapfile hits hiwater mark => autologout ? I thought I would put my machine to good use overnight by slogging out a huge Mathematica computation. When I came back in the morning, I found myself logged out, with my 95MB swapdisk full and my secondary swap file at 20MB (thats its lowater mark) (with plenty of room to grow, though). My swapdisk has a hiwater mark of 95MB set, and the secondary swap file has no hiwater mark. Is there something that automatically logs you out when one of your swapfiles hits its hiwater mark? I _assumed_ that when the primary hit its hiwat, it would start swapping on the secondary file. How can I get it to behave in this more rational way?
Date: Sun 19-Aug-1991 03:49:54 From: mfriedel@monolith.rmNUG.ORG (Michael Friedel) Subject: Re: swapfile hits hiwater mark => autologout ? In article <1991Aug18.212245.11464@math.ucla.edu> barry@arnold.math.ucla.edu (Barry Merriman) writes: > > I thought I would put my machine to good use overnight by > slogging out a huge Mathematica computation. When I came back in the morning, > I found myself logged out, with my 95MB swapdisk full and my secondary > swap file at 20MB (thats its lowater mark) (with plenty of room to > grow, though). > > My swapdisk has a hiwater mark of 95MB set, and the secondary > swap file has no hiwater mark. > > Is there something that automatically logs you out when one > of your swapfiles hits its hiwater mark? I _assumed_ that when the primary > hit its hiwat, it would start swapping on the secondary file. > > How can I get it to behave in this more rational way? > -- > Barry Merriman > UCLA Dept. of Math > UCLA Inst. for Fusion and Plasma Research > barry@math.ucla.edu (Internet; NeXTMail is welcome) Well I did some experiments with that a while ago. I didn't see that behaviour but whe I set a hiwat mark on the primary (and only) swapfile on that machine. It crashed in a rather hard way. I was sick of mathematica generating 50meg swapfiles and crashing my machine. So I though set a hiwat would cuas like an aoutomatic logout, or abort of that proccess. Not so, the machine takes a nasty dive. It took me quite a while to bring it back up. And yes I tried it more than once. My conclusion was that it diees gracefullie wih no hiwat set, than with. At least I get some kind of warning that way. Mike
Date: Sun 21-Aug-1991 23:41:45 From: sherwood@space.ualberta.ca (Sherwood Botsford) Subject: Re: swapfile hits hiwater mark => autologout ? Regarding Mathematica swap files growing without bound and crashing system A recent letter from myself to bug_next: ======================================================================
Date: Wed, 07-Aug-1991 19:22:03 From: Unknown Subject: Re: swapfile hits hiwater mark => autologout ? Recently we had one of machines die on a mathematica problem. The machine would not respond even to the power switch. Had to command-command-tilde to restart. Died. Rebooted single user Died. Message was something 28 Cannot page. Booted from bootfloppy. Mounted hard disk. did a df. Showed disk to be a 105% of capacity. Removed enough stuff to bring it down to 98. Rebooted. Ran fsck rebooted multiuser. Added hiwater of 60 meg to swaptab file. ------------------------- Suggest that the old swap file be purged, cleared, whatever, BEFORE an attempt to page is made. This would enable a reasonably dignified recovery. Without a bootfloppy, I would have had to boot and swap over the ethernet, and I'm not quite sure how to do that. => Sherwood Botsford sherwood@space.ualberta.ca <= => University of Alberta Lab Manager, Space Physics Group <= => tel:403 492-3713 fax: 403 492-4256 <=
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