It is a memory profiling tool on linux for a performance tuning. It measures memory performance like L1/L2 cache miss, TLB miss, and so on using by the hardware performance monitoring counters. It has a linux kernel patch, a command (ebs), and an API.
support perfctr-2.5.4
2003-06-03 Hiro Yoshioka <hyoshiok@miraclelinux.com>
* support perfctr-2.5.4
* MANIFEST: change patch/perfctr-2.5.4.dif
* Makefile: change version to 030603
* patch/perfctr-2.5.4.dif: added
* update INSTALL and INSTALL.en