Messages in this thread | | | Date | Wed, 15 Sep 1999 17:13:28 -0500 (CDT) | From | Jesse Pollard <> | Subject | Re: > 15,000 Simultaneous Connections |
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jordy@wserv.com wrote: >Mike Jagdis wrote: >> >> On Wed, 15 Sep 1999, Stephen C. Tweedie wrote: >> >> > The cost per fd is miniscule. >> >> Taking the 15000 fds in the subject select would need to do a >> 4 page kmalloc and the current poll would do a 32 page kmalloc. >> Then you have to loop over all the descriptors calling their poll >> handlers. >> >> Incidentally, it looks like there is a possible DoS with queued >> signals. If you flood the queue with signals but keep them blocked >> no one else will get a look in. > >Yeah, per-user/per-process limits need to be implemented. In fact, there are a >lot of resources which should have per-system, per-user, per-process, and >per-group limits put in. Sounds like a good project for a someone.
change the per-group to per-project so that group access permissions don't overlap resource limits (disk/cpu/memory).
------------------------------------------------------------------------- Jesse I Pollard, II Email: pollard@navo.hpc.mil
Any opinions expressed are solely my own.
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