From: "Jörg Sommer" <joerg@alea•gnuu.de>
To: linuxppc-dev@ozlabs•org
Subject: Re: time accounting problem (powerpc only?)
Date: Sun, 25 Nov 2007 10:31:39 +0000 (UTC) [thread overview]
Message-ID: <slrnfkijob.j2k.joerg@alea.gnuu.de> (raw)
In-Reply-To: 1195850245.4149.170.camel@johannes.berg
Hi,
Johannes Berg <johannes@sipsolutions•net> wrote:
>> % diff /proc/interrupts <(sleep 2; cat /proc/interrupts)
>> --- /proc/interrupts 2007-11-23 15:04:06.004846901 +0100
>> +++ /proc/self/fd/11 2007-11-23 15:04:05.952841422 +0100
>> @@ -1,15 +1,15 @@
>> CPU0
>> - 25: 18063968 MPIC 1 Level VIA-PMU
>> + 25: 18064241 MPIC 1 Level VIA-PMU
>> - 42: 1415066 MPIC 1 Level keywest i2c
>> - 47: 2075159 MPIC 1 Level GPIO1 ADB
>> - 48: 6686659 MPIC 1 Level radeon@pci:0000:00:10.0
>> + 42: 1415084 MPIC 1 Level keywest i2c
>> + 47: 2075193 MPIC 1 Level GPIO1 ADB
>> + 48: 6686778 MPIC 1 Level radeon@pci:0000:00:10.0
>>
>> I don't know where they come from, but that's the cause of the high IRQ
>> time.
>
> Are you sure about that?
No, I saw the high hardware interrupt value in top and looked at
/proc/interrupts and concluded that those are the evil source of the
high load.
> I'm fairly sure that I always had rather high numbers of interrupt
> here. And the system isn't sluggish or unresponsive as you'd expect if
> the IRQs actually did take 90% of the CPU time!
Okay, so what might be the source?
Doesn't really nobody else see this values? At least, Elimar
Riesebieter has the same problem. He reported on debian-powerpc.
Bye, Jörg.
--
Treffen sich zwei Funktionen.
Sagt die eine: „Verschwinde oder ich differenzier' dich!“
Erwidert die andere: „Ätsch, ich bin exponentiell!“
next prev parent reply other threads:[~2007-11-25 13:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-23 10:46 time accounting problem (powerpc only?) Johannes Berg
2007-11-23 14:08 ` Jörg Sommer
2007-11-23 20:37 ` Johannes Berg
2007-11-23 20:48 ` Johannes Berg
2007-11-25 10:31 ` Jörg Sommer [this message]
2007-11-25 17:45 ` Johannes Berg
2007-11-26 16:23 ` Johannes Berg
2007-11-27 5:00 ` Tony Breeds
2007-11-27 13:42 ` Johannes Berg
2007-11-27 9:57 ` Paul Mackerras
2007-11-27 13:06 ` Johannes Berg
2007-11-26 23:55 ` Johannes Berg
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