RE: libpfm4 stats are too low

[Hassan, A. <ahm...@sa...>]

Hi  Stephane,

>Did you enable automatic inheritance across fork with the -i option of
>the task.c example?

Yes I am passing -i flag as:

./task -e LLC-LOADS,LLC-STORES,LLC_MISSES,cycles,instructions  –i  -t <pid>

I should see thousands of loads theoretically because the DB queries are loading huge data ~4G into DRAM and then accessing it but libpfm4 numbers are very low. Am I missing some additional configuration?

I tried using 'perf' with latest kernel 3.8.8 but kernel freezes with trace 'Watchdog detected hard LOCKUP on cpu 0.......'

Thanks

Kind Regards, Ahmad
SAP