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Home » Mailing list archives » linux-kernel » 2008 » March » 29

Re: performance differences: "maxcpus=1" vs. "echo 0 > /sys/devices/system/cpu/cpu1/online"

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From: Bernd Eckenfels <ecki@...>
To: <linux-kernel@...>
Subject: Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /sys/devices/system/cpu/cpu1/online"
Date: Saturday, March 29, 2008 - 7:22 pm

In article <16336.23884.qm@web25814.mail.ukl.yahoo.com> you wrote:

I dont have much insight, but I do remember some java performance problems
on Multi-Core with some Dell Desktops. I think they had been fixed with a
Bios upgrade. Sorry I dont remeber the chip and revision details anymore. I
just felt reminded, because MAXCPU=1 helped back then, also.

Gruss
Bernd
y
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Messages in current thread:
performance differences: "maxcpus=1" vs. "echo 0 &gt; /sys/d..., Michael Meyer, (Tue Mar 25, 9:47 am)
Re: performance differences: "maxcpus=1" vs. "echo 0 > /s..., Bernd Eckenfels, (Sat Mar 29, 7:22 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Pavel Machek, (Fri Mar 28, 9:59 am)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Michael Meyer, (Sat Mar 29, 4:55 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Pavel Machek, (Sat Mar 29, 5:22 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Michael Meyer, (Sat Mar 29, 6:16 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Pavel Machek, (Wed Apr 2, 7:31 am)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Luciano Rocha, (Tue Mar 25, 10:08 am)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Andi Kleen, (Tue Mar 25, 1:16 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Pavel Machek, (Fri Mar 28, 10:00 am)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Michael Meyer, (Tue Mar 25, 1:23 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Len Brown, (Tue Mar 25, 7:27 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Michael Meyer, (Wed Mar 26, 3:26 am)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Wander Winkelhorst, (Tue Mar 25, 1:49 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Michael Meyer, (Tue Mar 25, 1:56 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Andi Kleen, (Tue Mar 25, 1:57 pm)
Re: performance differences: "maxcpus=1" vs. "echo 0 &gt; /s..., Michael Meyer, (Tue Mar 25, 12:38 pm)

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