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Re: Fedora kernel philosophy question. was: kernel question



Hi,

I am now Running -- 2.4.22-1.2088.nptl (Fedora Test 3)

After executing test-starve---

>test-starve
>expecting to receive 10000000 signals


I am indeed using TOP:
---------------------------------------------------------------------
09:45:36  up 10:40,  4 users,  load average: 2.08, 0.62, 0.21
101 processes: 97 sleeping, 4 running, 0 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
           total    0.0%    0.0%    0.0%   0.0%     0.0%    0.0%    0.0%
Mem:   514380k av,  500620k used,   13760k free,       0k shrd,  295000k
buff
       275508k active,             192160k inactive
Swap: 2096472k av,   41204k used, 2055268k free                   72136k
cached

PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM  TIME CPU COMMAND
28167 williams 17 0   300  300  280 S    96.5  0.0   0:55  0 test-starve
4001 root      16 0   271M  15M  5080 R     3.1  3.0   7:55   0 X
28166 williams 16 0   1224 1224   892 R     0.3  0.2   0:00   0 top
4161 williams  16 0   556  520   432 S     0.1  0.1   3:36   0 autorun
28129 williams 15 0   11532  11M 10000 S     0.1  2.1   0:00   0 kdeinit
1 root      16   0   376  376   324 S     0.0  0.0   0:04   0 init
2 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 keventd
---------------------------------------------------------------------------


Now, I will try the M (display memory on) option for TOP:

---------------------------------------------------------------------------
 09:52:18  up 10:47,  4 users,  load average: 2.42, 1.44, 0.68
101 processes: 98 sleeping, 3 running, 0 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
           total    0.0%    0.0%    0.0%  33.3%    33.4%   33.1%    0.0%
Mem:   514380k av,  505756k used,    8624k free,       0k shrd,  295424k
buff
       275900k active,             196880k inactive
Swap: 2096472k av,   41200k used, 2055272k free                   76384k
cached

PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
28183 williams 17 0   304  304  284 S    98.1  0.0  0:59   0 test-starve
4161 williams  16   0   556  520   432 S     0.9  0.1   3:37   0 autorun
28185 williams  17   0  1224 1224   896 R     0.3  0.2   0:00   0 top
4001 root      15   0  271M  15M  5080 S     0.1  3.0   7:57   0 X
------------------------------------------------------------------------


After the test program finishes, it does return the CPU.




Thanks,
Ernesto


On Sat, 2003-10-18 at 05:10, Ingo Molnar wrote:
> On Tue, 14 Oct 2003, Ernest L. Williams Jr. wrote:
> 
> > I see that is taking up to 97% of the CPU and not letting go.
> > 
> > Hewlett Packard has the test program on their web site.
> 
> I can see no starvation.
> 
> are you looking at it via 'top'? If yes then press 'M' to show all threads
> - test-starve.c is a threaded application.
> 
> 	Ingo
-- 
Ernest L. Williams Jr. <ernesto ornl gov>




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