From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] Busy mouse WAS: Re: Making read(1) an rc(1) builtin?
Date: Thu, 7 Apr 2011 16:19:06 -0400 [thread overview]
Message-ID: <e8a0c97b996aaea2080b1f845c3c7a0d@ladd.quanstro.net> (raw)
In-Reply-To: <867hb5ygqt.fsf@cmarib.ramside>
> I don't have "*nomp=1" in plan9.ini, but I am running the 9atom kernel
> you gave me. :) When it boots, it outputs the message "nomp: no mp
> structure".
i ran some actual tests, and it turns out that i can get
1515 interrupts/sec and 1950 syscalls/sec just by moving my
usb mouse constantly. the load average is still 0, and the
interrupt time is <= 3%
so if you are seeing a performance problem just due to
the mouse, the i would think that the fact that your machine
is doing 8259-style interrupts has something to do with it.
eio processing on 8259-style interrupts can take a long time.
- erik
next prev parent reply other threads:[~2011-04-07 20:19 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-03 22:30 [9fans] " smiley at zenzebra.mv.com
2011-04-03 23:22 ` pmarin
2011-04-03 23:41 ` Tristan Plumb
2011-04-04 2:02 ` Ethan Grammatikidis
2011-04-04 2:53 ` erik quanstrom
2011-04-04 7:54 ` Tristan Plumb
2011-04-04 9:26 ` roger peppe
2011-04-04 21:35 ` smiley
2011-04-04 21:46 ` Anthony Sorace
2011-04-04 22:03 ` erik quanstrom
2011-04-05 8:57 ` Balwinder S Dheeman
2011-04-04 22:00 ` Oleg Finkelshteyn
2011-04-04 22:33 ` erik quanstrom
2011-04-04 23:01 ` Lyndon Nerenberg
2011-04-05 8:58 ` yy
2011-04-05 19:54 ` Ethan Grammatikidis
2011-04-05 19:56 ` erik quanstrom
2011-04-05 20:54 ` Ethan Grammatikidis
2011-04-05 21:53 ` andrey mirtchovski
2011-04-06 16:32 ` Bakul Shah
2011-04-06 16:43 ` roger peppe
2011-04-06 18:15 ` erik quanstrom
2011-04-06 18:37 ` Yaroslav
2011-04-07 8:45 ` Greg Comeau
2011-04-06 18:18 ` erik quanstrom
2011-04-07 8:45 ` Greg Comeau
2011-04-05 9:10 ` roger peppe
2011-04-05 15:47 ` ron minnich
2011-04-05 15:52 ` Jacob Todd
2011-04-05 15:57 ` erik quanstrom
2011-04-05 16:04 ` Rudolf Sykora
2011-04-05 17:17 ` ron minnich
2011-04-05 17:49 ` smiley
2011-04-05 18:01 ` erik quanstrom
2011-04-05 19:50 ` Yaroslav
2011-04-06 15:27 ` smiley
2011-04-06 15:32 ` Jacob Todd
2011-04-07 1:26 ` [9fans] Busy mouse WAS: " smiley
2011-04-07 11:49 ` erik quanstrom
2011-04-07 19:59 ` smiley
2011-04-07 20:19 ` erik quanstrom [this message]
2011-04-09 12:26 ` smiley
2011-04-09 12:33 ` erik quanstrom
2011-04-05 16:28 ` [9fans] " dexen deVries
2011-04-05 17:05 ` Bakul Shah
2011-04-03 23:51 ` Lyndon Nerenberg (VE6BBM/VE7TFX)
2011-04-04 3:01 ` erik quanstrom
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