Date: Fri, 16 Sep 2005 16:37:26 +0200 From: Oliver Lehmann <lehmann@ans-netz.de> To: Kris Kennaway <kris@obsecurity.org> Cc: current@freebsd.org Subject: Re: low(er) disk performance with sched_4bsd then with sched_ule Message-ID: <20050916163726.729ada59.lehmann@ans-netz.de> In-Reply-To: <20050915213719.GA26998@xor.obsecurity.org> References: <20050914194612.15692485.lehmann@ans-netz.de> <43286E37.40203@samsco.org> <20050914222013.178dc4dc.lehmann@ans-netz.de> <84dead72050914135239514c49@mail.gmail.com> <20050915000053.448f251b.lehmann@ans-netz.de> <84dead7205091500152a7c25d1@mail.gmail.com> <20050915172005.072f4bdf.lehmann@ans-netz.de> <20050915181238.54b16b4b.lehmann@ans-netz.de> <20050915213719.GA26998@xor.obsecurity.org>
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Hi Kris,
Kris Kennaway wrote:
> What about using schedgraph as I suggested previously?
After I installed py24-tkinter and all the dependencies, I recompiled the kernel and so on, but it seems not to work:
root@nudel olivleh1> dd if=/dev/zero of=/mnt/files/test.dd bs=64k count=32000
32000+0 records in
32000+0 records out
2097152000 bytes transferred in 379.623777 secs (5524290 bytes/sec)
root@nudel olivleh1> ktrdump -ct > ule.ktr.out
root@nudel olivleh1> grep ULE /usr/src/sys/i386/conf/NUDEL
options SCHED_ULE
root@nudel olivleh1> python /mnt/files/FreeBSD/6.0/src/tools/sched/schedgraph.py ule.ktr.out
Traceback (most recent call last):
File "/mnt/files/FreeBSD/6.0/src/tools/sched/schedgraph.py", line 1224, in ?
graph = SchedGraph(root)
File "/mnt/files/FreeBSD/6.0/src/tools/sched/schedgraph.py", line 1168, in __init__
self.draw(sys.argv[1])
File "/mnt/files/FreeBSD/6.0/src/tools/sched/schedgraph.py", line 1201, in draw
ktrfile = KTRFile(file)
File "/mnt/files/FreeBSD/6.0/src/tools/sched/schedgraph.py", line 822, in __init__
ticksps = self.ticksps()
File "/mnt/files/FreeBSD/6.0/src/tools/sched/schedgraph.py", line 911, in ticksps
return (self.timespan() / self.ticks[0]) * int(self.stathz)
File "/mnt/files/FreeBSD/6.0/src/tools/sched/schedgraph.py", line 908, in timespan
return (self.timestamp_first - self.timestamp_last);
TypeError: unsupported operand type(s) for -: 'NoneType' and 'NoneType'
Exit 1
root@nudel olivleh1>
--
Oliver Lehmann
http://www.pofo.de/
http://wishlist.ans-netz.de/
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