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Full Discussion: mpstat command
Operating Systems Solaris mpstat command Post 302416187 by Pouchie1 on Sunday 25th of April 2010 11:45:31 AM
Old 04-25-2010
mpstat command
Hi,

I would like to clearly understand the output of the mpstat command. What is the mutex spins and also context switches? What if we saw that the number of mutex spins is high. Basically, what to look for in the output of the mpstat command? What is wrong and what is ok. what is the value under the smtx will reveal us. Please see below an example output



Code:
CPU minf mjf xcal  intr ithr  csw icsw migr smtx  srw syscl  usr sys  wt idl
  0  254   0  189   311  202  357   29   52 17402    0  1465    1  39   0  59
  1  184   0   66    55    9  379   43   67 22769    0  1360    1  51   0  48
  2  300   0  165    40    5  422   36   88 20983    0  1266    1  46   0  52
  3  384   0  374    80   38  407   42   78 20168    0  1775    2  41   0  57
CPU minf mjf xcal  intr ithr  csw icsw migr smtx  srw syscl  usr sys  wt idl
  0   60   0  239   321  203  195   76   40 41660    0  1068    1  99   0   0
  1   66   0  115    81    9  413   63   70 33658    0   776    1  84   0  15
  2    2   0   33    98    8  393   80   59 40319    0   671    1  91   0   9
  3  150   0  377   120   36  392   79   72 40218    0   854    2  85   0  13
CPU minf mjf xcal  intr ithr  csw icsw migr smtx  srw syscl  usr sys  wt idl
  0   70   0  187   312  203  393   26   62 13326    0  1560    1  33   0  66
  1  260   0  139    49   10  525   36  109 14185    0  1982    2  35   0  63
  2  303   0  277    46   13  462   33  103 16067    0  1672    1  42   1  56
  3  387   0  377   118   89  506   28  110 6790    0  1904    1  23   0  76

Last edited by pludi; 04-25-2010 at 12:46 PM.. Reason: code tags, please...
 

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LEARN ABOUT DEBIAN

mdestroy

mDestroy(3)							   util/ulocks.h						       mDestroy(3)

NAME

       mDestroy  - destroy a mutex.

SYNOPSIS

       #include <util/ulocks.h>

       void mDestroy(pthread_mutex_t *mutex);

ARGUMENTS

       mutex - mutex to destroy.

DESCRIPTION

       Destroys the mutex <mutex> that was initialized by mCreate().

       MT-Level: Safe for unique <mutex>.

RETURN VALUE

       None.

SEE ALSO

       mCreate(3),  fCreate(3),  mUnlock(3),  fUnlock(3),  cBroadcast(3),  cSignal(3),	fFind(3),  cDestroy(3), cCreate(3), mDestroy(3), cWait(3),
       fLock(3), fDestroy(3), mLock

ClearSilver							   12 July 2007 						       mDestroy(3)
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