HP Caliper User's Guide

• Flush
This is the number of flush cache (fc) operations executed per second by the local
processor.
• Prtl
This is the total number of partial (less than 128 byte) reads (BRP) or writes (BWP)
initiated by the local processor per second. Partial transactions are normally due
to reading/writing memory-mapped I/O control registers, semaphore operations,
clean castouts (if monitoring a system with directory-based cache coherency), and
sending interprocessor interrupts.
• Snoops
This is the total number of snoops per second that the local processor observes as
a result of data cache misses of remote processors and local processor self snoops.
• Hitm (hit a modified)
This is the number of implicit writebacks sourced by the local processor in response
to data misses by remote processors referencing a line that is modified in the local
processors cache.
310 Event Set Descriptions for CPU Metrics