From: "Zhai, Edwin" <edwin.zhai@intel.com>
To: Avi Kivity <avi@redhat.com>
Cc: Rik van Riel <riel@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"mtosatti@redhat.com" <mtosatti@redhat.com>
Subject: Re: [PATCH] increase ple_gap default to 64
Date: Tue, 04 Jan 2011 22:35:37 +0800 [thread overview]
Message-ID: <4D233039.8010509@intel.com> (raw)
In-Reply-To: <4D232EB1.1000304@redhat.com>
Avi Kivity wrote:
> On 01/04/2011 04:18 PM, Rik van Riel wrote:
>
>>
>> So should I resend the patch with the ple_gap default
>> changed to 128, or are you willing to ack the current
>> patch?
>>
>>
>
> I think 128 is safer given than 41 was too low. We have to take into
> account newer cpus and slower spin loops. If the spin loop does a cache
> ping-pong (which would be a bad, bad possible, implementation), even 128
> might be too low.
>
Agree with Avi. Let us use 128 at this point.
Thanks,
edwin
next prev parent reply other threads:[~2011-01-04 14:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-03 15:19 [PATCH] increase ple_gap default to 64 Rik van Riel
2011-01-04 3:21 ` Zhai, Edwin
2011-01-04 14:18 ` Rik van Riel
2011-01-04 14:29 ` Avi Kivity
2011-01-04 14:35 ` Zhai, Edwin [this message]
2011-01-04 14:51 ` [PATCH -v2] vmx: " Rik van Riel
2011-01-14 3:08 ` Zhai, Edwin
2011-01-16 15:42 ` Avi Kivity
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