onstat -g vpcache command: Print CPU virtual processor and tenant virtual processor private memory cache statistics
Run the onstat -g vpcache command to display statistics about CPU virtual processor and tenant virtual processor private memory caches.
Syntax:
onstat -gvpcacheExample output
The output for each CPU or tenant virtual processor has the same format. The following example shows the output for one CPU virtual processor. Figure 2: onstat -g vpcache command output
CPU virtual processor memory block cache statistics - 4096 byte blocks
Number of 4096 byte memory blocks requested for each CPU virtual processor:262144
CPU virtual processor memory block cache mode : Dynamic
vpid pid Blocks held Hit percentage Free cache
1 2557540 4667202 99.2 % 100.0 %
Current total virtual processor allocations from cache: 59466799, Total frees: 60209953
size cur blks tgt blks alloc miss free drain draintime
1 1662023 9661 49167485 0 49816526 0 Thu Apr 11 09:43:35 2013
2 130 52428 7609556 297043 7609612 0 Thu Jan 1 00:00:00 1970
3 329160 9 905094 0 943256 0 Thu Apr 11 09:43:36 2013
4 424 9 306637 16192 306506 0 Thu Apr 11 09:43:33 2013
5 10 9 119313 122607 119315 0 Thu Apr 11 09:43:36 2013
6 20790 9 55305 0 57700 0 Thu Apr 11 09:43:23 2013
7 9877 9 31164 0 31942 0 Thu Apr 11 09:43:14 2013
8 2816 5242 6500 0 6537 0 Thu Jan 1 00:00:00 1970
9 234 9 606575 8323 605525 0 Thu Apr 11 09:43:36 2013
10 1130 9 5597 0 5679 0 Thu Apr 11 09:43:18 2013
11 231 5242 1808 0 1753 0 Thu Jan 1 00:00:00 1970
12 1068 9 5667 0 5666 0 Thu Apr 11 09:43:28 2013
13 65 5242 7114 175 7110 0 Thu Jan 1 00:00:00 1970
14 28 5242 26200 172 26185 0 Thu Jan 1 00:00:00 1970
15 30 5242 13562 553 13547 0 Thu Jan 1 00:00:00 1970
16 2627136 34 349124 0 408425 0 Thu Apr 11 09:43:35 2013
17 1309 9 59 0 107 0 Thu Apr 11 09:27:33 2013
18 198 5242 7 0 6 0 Thu Jan 1 00:00:00 1970
19 190 5242 5 0 1 0 Thu Jan 1 00:00:00 1970
20 60 5242 30 19 19 0 Thu Jan 1 00:00:00 1970
21 462 5242 38 0 43 0 Thu Jan 1 00:00:00 1970
22 22 5242 3 0 1 0 Thu Jan 1 00:00:00 1970
23 69 5242 141 15 135 0 Thu Jan 1 00:00:00 1970
24 4944 35 189509 2078 185347 0 Thu Apr 11 09:43:35 2013
25 75 5242 1 0 1 0 Thu Jan 1 00:00:00 1970
26 0 9 364 220 361 0 Thu Apr 11 09:39:17 2013
27 27 5242 1 0 2 0 Thu Jan 1 00:00:00 1970
28 56 5242 415 33 410 0 Thu Jan 1 00:00:00 1970
29 319 5242 7101 735 7088 0 Thu Jan 1 00:00:00 1970
30 3240 5242 174 0 223 0 Thu Jan 1 00:00:00 1970
31 279 11 51994 2515 50682 0 Thu Apr 11 09:43:36 2013
32 800 5242 256 0 243 0 Thu Jan 1 00:00:00 1970Output description
- vpid
- The ID of the virtual processor
- pid
- The process ID for the virtual processor that is assigned by the operating system
- Blocks held
- The number of 4096 byte blocks that are available in the private memory cache
- Hit percentage
- The percentage of time that a block was available when requested
- Free cache
- The percentage of time that blocks were freed for reuse without being drained
- Current VP total allocations from cache
- The number of times a block or group of blocks was taken from the cache
- Total frees
- The number of times a block or group of blocks was added to the cache
- size
- The size of the memory blocks, in 4096-byte blocks
- cur blks
- The current number of 4096-byte blocks that are allocated (a multiple
of
size) - tgt blks
- The target number of blocks for the cache entry before the cache is drained
- alloc
- The number of times a requestor received a block of this size
- miss
- The number of times a block was requested but none were available
- free
- The number of times a memory block was placed into the cache
- drain
- The number of times an aged block was forced out to make room for another block
- draintime
- The last time the bin of memory blocks was drained