Lost kernel samples with all settings

[Paul J. <ntd...@ya...>]

Hello,
I have been running oprofile 0.9.6 on a few of my configurations.

Whatever setting I use, my kernel events are always overflowing. I changed the sampling to be 10 times default(10000000), callgraph is 2, and have upped the buffer size to be 8M, with watershed at 2M and cpu buffer size at 32k. Tried the default sizes with the above sampling frequency as well and steadily increased the buffers, but I still see a huge number of lost kernel samples, usually almost equal to Nr. kernel samples. I am tracking lib, cpu and kernel separately.

I would appreciate any help/pointers!

M