Date: 06 Nov 1998 11:30:32 -0500 From: Cory Kempf <ckempf@enigami.com> To: freebsd-current@FreeBSD.ORG Subject: bad time slicing? Priorities? Message-ID: <x7sofwokbb.fsf@singularity.enigami.com>
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I have a system running 3.0 SMP, with 2 333MHz PII's. On this system, I am running two copies of the Bovine RSA client (rc5des) (essentially two endless CPU bound tasks, niced down to 19) >From top: PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND 23593 root 105 19 832K 344K RUN 0 23.4H 98.15% 98.15% rc5des 23726 root 105 19 832K 336K CPU1 0 22.7H 97.89% 97.89% rc5des We are not swapping, or anything else obvious. If I run xgalaga (a game), which is being run at nice=5 for some reason (not sure why, haven't looked into it), It doesn't seem to be getting enough CPU time. Play is jerky and slow. This isn't what I expected. Expecially with two CPUs to play with. The rc5des programs, should essentially not be running if higher priority things are waiting to run, right? Certainly with two CPUs, I would expect that the game would get time pretty much as soon as it was ready to run, while the other tasks would fight over what was left. So, do I just not understand how BSD does its scheduling? Or is there actually something wrong? Thanks, +C -- Thinking of purchasing RAM from the Chip Merchant? Please read this first: <http://www.enigami.com/~ckempf/chipmerchant.html>; Cory Kempf Macintosh / Unix Consulting & Software Development ckempf@enigami.com <http://www.enigami.com/~ckempf/>; To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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