Version 1.3 is out! Download executable
(shift-click on Netscape, chmod +x har after download).
Overview:
# har -h
Usage: har [-{i|s|r|M}] [-{u|a|k}] [-Dnmh] [interval [count]]
-i outputs per-instruction stats (default)
-s outputs per-second stats
-r outputs per-reference stats
-M switches to memory bandwidth stats
-u tracks user mode (default)
-k tracks kernel mode
-a tracks both kernel and user modes
-n suppress titles
-p includes per-cpu output
-D enable debug mode
-m outputs MAX cpu stats (instead of AVG)
-h print extended usage information
Version 1.3 2001/07/27
Statistics:
mips: million instructions per second
bus: percentage utilization of address bus from CPUs
flops: million floating-point instructions per second
cpi: cycles per instruction
dcm: data-cache misses
icm: instruction-cache miss
ecm: external-cache misses
itlb: instruction TLB misses
dtlb: data TLB misses
brr: branch rate
bmr: branch misses
dsr: data stall rate
isr: instruction stall rate
fsr: FP-unit stall rate
bsr: branch-misprediction stall rate
US-III Memory Controller Statistics:
bw: total bandwidth in MB/s
rd: total read bandwidth in MB/s
wr: total write bandwidth in MB/s
Getting started:
o per-instruction and per-second stats are ratios
o per-reference stats are percentages
o works with UltraSPARC I/II/III and Solaris 8
o needs to be run as root
o be careful with interpreting data on idle systems
o some counters may not be working properly
