... Do you have any idea what those could be?
> samples % app name symbol name > 221120130 13.3603 libz.so.1 (no symbols)
libz is compress* call here.
> 113710474 6.8705 libc.so.6 (no symbols)
probably the event dispatch in libevent calling epoll_add/dispatch.
is there a second set of libs with symbols intact for libc/libz for debian?