Date: Thu, 24 Nov 2005 10:12:02 +0100 From: Juraj Lutter <wilbury@gmail.com> To: freebsd-stable@freebsd.org Subject: performance issues with 6.0-STABLE Message-ID: <eb8efda50511240112r29df9b08s652a7b3d4fb3c82f@mail.gmail.com>
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Hi, (sorry for crossposting) recently I've updated to 6.0-STABLE and started noticing strange performanc= e 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 1= 5 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 :-)) Thanks Juraj -- Sincerely yours, Juraj Lutter
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