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3Par cache utilization

DA_Carobin
Occasional Contributor

3Par cache utilization

Inside the InformOS it is possible to check how much cache is being used by the InformOS it self?  If Yes is this value fixed or variable?

3 REPLIES
Venkatesh_SL
HPE Pro

Re: 3Par cache utilization

CMP Cache Memory Page. A 16 KB block of control cache memory where I/O requests are stored 

statcmp will show Read and Write hits on a per node basis:

Example:

cli% statcmp

17:08:48 07/14/06 ---- Current ----- ----- Total ------
Node Type Accesses Hits Hit% Accesses Hits Hit%
0 Read 1982 85 4 1982 85 4
0 Write 1743 5 0 1743 5 0
1 Read 1803 92 5 1803 92 5
1 Write 1694 5 0 1694 5 0

GP10
HPE Pro

Re: 3Par cache utilization

You may also want to look at the command:  statcache 

 

                           ----- statcache  -d -iter -----
                              duration=180 iteration=1
02:37:42 04/24/2018 ------- Current --------    -------- Total ---------
                              CMP  FMP Total              CMP  FMP Total
    Node Type       Accesses Hit% Hit%  Hit%    Accesses Hit% Hit%  Hit%
       0 Read        2009458   67    0    67     2009458   67    0    67
       0 Write       1259440   25    0    25     1259440   25    0    25
       1 Read        2385518   55    0    55     2385518   55    0    55
       1 Write       1566079   30    0    30     1566079   30    0    30
       2 Read        2167913   64    0    64     2167913   64    0    64
       2 Write       1945717   27    0    27     1945717   27    0    27
       3 Read        2011226   68    0    68     2011226   68    0    68
       3 Write       1390183   27    0    27     1390183   27    0    27
I am an HPE Employee
Dennis Handly
Acclaimed Contributor

Re: 3Par cache utilization

The cache size is fixed.  shownode will list it under "Data Mem".