DEVICE_POLLING IF_EM CPU usage
Daniel Dias Gonçalves
daniel at dgnetwork.com.br
Sat Feb 9 15:10:22 PST 2008
I activated polling in 8 interfaces em0... em7 (ifconfig em* polling) to
carry through performance tests, when activating, it had a significant
reduction of CPU usage, load average measured of "0,50, 0,69, 0,52" for
"0,43, 0,39, 0,21" and the CPU usage (SNMP Graphic) measured of 35% for
5%. Passed some hours I disactivated polling (ifconfig em* - polling)
and CPU usage continues low.
Somebody could explain this to me?
CPU: Intel(R) Xeon(TM) CPU 3.20GHz (3200.13-MHz 686-class CPU)
Logical CPUs per core: 2
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
SMP: AP CPU #1 Launched!
vendor = 'Intel Corporation'
device = '82546EB Dual Port Gigabit Ethernet Controller'
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