Messages in this thread | | | Subject | SMP Scheduling problem? 2.2.1 | Date | Sun, 07 Feb 1999 13:53:20 +1100 | From | Stephen Rothwell <> |
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Hi all,
I have a very long running CPU bound process running. It starts at boot time. I am running on a SMP dual Pentium II 350 and under 2.2.0 pre 4 (I think, my be pre 7) this process would cause top to report 99.9% user time and the CPU time usage of this process would keep pace with total uptime over several hours i.e. it just runa on one CPU and abosorbed all its time (this is what I would expect).
Under 2.2.1, top reports 49.8% user time and the processes CPU time run as at (very close to) half the uptime.
Here is is:
1:41pm up 47 min, 2 users, load average: 1.00, 1.00, 0.95 22 processes: 20 sleeping, 2 running, 0 zombie, 0 stopped CPU states: 49.6% user, 1.0% system, 0.0% nice, 49.3% idle Mem: 128104K av, 60572K used, 67532K free, 9436K shrd, 24100K buff Swap: 124988K av, 0K used, 124988K free 17640K cached
PID USER PRI NI SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND 223 sfr 18 0 4264 4264 280 R 0 49.9 3.3 23:18 lifesrcdumb 1531 root 1 0 976 976 812 R 0 0.4 0.7 0:00 top 1 root 0 0 372 372 316 S 0 0.0 0.2 0:02 init 2 root 0 0 0 0 0 SW 0 0.0 0.0 0:00 kflushd
I have nothing else of significance running.
Any clues, have I missed something?
Debian 2.1 (slink) with some of unstable (potato) Linux version 2.2.1 (root@acacia) (gcc version 2.7.2.3) #1 SMP Thu Feb 4 22:45:13 EST 1999 procps 1.9.0
Any more information required?
Cheers, Stephen -- Stephen Rothwell Stephen.Rothwell@canb.auug.org.au http://www.canb.auug.org.au/~sfr/
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