1 Testcase 06 2 ----------- 3 4 It's been found that sometimes onlining and offlining CPUs confuse some 5 of the various system tools. In particular, we found it caused top to 6 crash, and found that sar wouldn't register newly available cpus that 7 weren't there when it started. This test case seeks to exercise these 8 known error cases and verify that they behave correctly now. 9 10 11 Algorithm - Top 12 =============== 13 Given a CPU to test that exists 14 15 Make sure the specified cpu is online 16 17 Loop until done: 18 Start up top and give it a little time to run 19 20 Offline the specified CPU 21 22 Wait a little time for top to notice the CPU is gone 23 24 Now check that top hasn't crashed by verifying its PID is still 25 being reported by ps. 26 27 When exiting: 28 Kill the top process 29 Restore all CPUs to their initial state 30 31 32 Algorithm - Sar 33 =============== 34 Given a CPU to test that exists 35 36 Make sure the specified cpu is offline 37 38 Loop until done: 39 Start up sar writing to a temp log and give it a little time to run 40 41 Verify that SAR has correctly listed the missing CPU as 'nan' in its 42 tmp log 43 44 Take a timestamp and count how many CPUs sar is reporting to be 45 offline 46 47 Online the specified cpu 48 49 Take another timestamp and another count of offlined CPUs. 50 51 Verify that the number of CPUs offline has changed 52 53 When exiting: 54 Kill the sar process 55 56 57
