To verify and monitor the cache area

1. Use the following command to display information about the cache areas on the system.

   # sfcache list -l

   Cachearea: sfcachearea_1
   Assoc Type: AUTO
   Type: VxVM
   Size: 30.00g
   Cacheline Size: 64.00k
   Memory Size: 16.00m
   State: ONLINE
   Layout: CONCAT
   Number of Columns: 0
   
   ASSOCIATED DATA OBJECTS:
   
   Volume: testdg/testvol1
   Size: 500.00g
   State: ENABLED
   Kstate: ENABLED
   Caching Mode: read
   
   Volume: testdg/testvol2
   Size: 500.00g
   State: ENABLED
   Kstate: ENABLED
   Caching Mode: read

   See Displaying information about a cache area.

2. Use the following command to display information about a specific cache area.

   # sfcache list sfcachearea_1 
   Cachearea: sfcachearea_1
   Assoc Type: AUTO
   Type: VxVM
   Size: 30.00g
   Cacheline Size: 64.00k
   Memory Size: 16.00m
   State: ONLINE
   Layout: CONCAT
   Number of Columns: 0
   
   ASSOCIATED DATA OBJECTS:
   
   ASSOC DATAOBJECT NAME   CACHING-MODE  STATE    KSTATE
   testdg/testvol1         read          ENABLED  ENABLED
   testdg/testvol2         read          ENABLED  ENABLED

   See Viewing the SmartIO cache statistics .

3. To see statistics on the cache usage, use the following command:

   # sfcache stat sfcachearea_1

                                   HIT RATIO    ART(Hit)ms   ART(Miss)ms   BYTES
   NAME                     %CACHE RD    WR     RD    WR     RD     WR     RD     WR
   TYPE: VxVM
   sfcachearea_1            13.43  91.24 94.20  0.142 0.819  0.414  0.798  15.31g 4.21g
   
   ASSOCIATED DATA OBJECTS:
   testdg/testvol1          6.10   90.00 96.00  0.141 0.459  0.348  0.448  6.77g  1.89g
   testdg/testvol2          7.32   91.00 92.00  0.143 1.179  0.480  1.149  8.54g  2.31g