performance issues with 6.0-STABLE
freebsd-users-l at wilbury.sk
Thu Nov 24 10:10:58 CET 2005
(sorry for crossposting)
recently I've updated to 6.0-STABLE and started noticing strange
performance issues with the system. The system itselfs acts as an web
server running apache2 with php4 compiled from ports.
However, there is, in my opinion, strange behaviour of this machine.
Under normal operation, load average is between 0.30 and 0.60 but
suddenly, from time to time (every 15 to 20 minutes), the load increases
dramatically to 15 or more with no visible causes. Anyone from you have
encountered behaviour like this also? I suspect the ACPI or interrupt
routing to be root cause of this, as the vmstat -i shows:
# vmstat -i
interrupt total rate
irq9: acpi0 28 0
irq13: npx0 1 0
irq18: bfe0 atapci1 57519357 710
cpu0: timer 162084106 2000
Total 219603492 2710
710 interrupts/second is just too much...
Machine runs customized kernel, with ACPI and APIC enabled, mainboard is
Intel, processor is Intel P4 Celeron. I will provide complete
dmesg.boot, ``ps ax'' output and kernel config upon request.
.oO(And no, I can NOT put the DDB into kernel, nor do I have access to
any kind of console of that box :-))
Juraj Lutter | /\ ASCII Ribbon Campaign
otis (at) wilbury.sk | \/ - NO HTML/RTF in e-mail
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