From: "zhenzhong.duan" <zhenzhong.duan@oracle.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: tglx@linutronix.de, mingo@redhat.com, x86@kernel.org,
linux-kernel@vger.kernel.org,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Feng Jin <joe.jin@oracle.com>
Subject: Re: [PATCH] Parallelize mtrr init between cpus
Date: Wed, 08 Aug 2012 10:08:49 +0800 [thread overview]
Message-ID: <5021CA31.7000405@oracle.com> (raw)
In-Reply-To: <5021432F.2030907@zytor.com>
2012-08-08 00:32, H. Peter Anvin wrote:
> On 08/07/2012 12:29 AM, zhenzhong.duan wrote:
>> Current code serialize mtrr init with set_atomicity_lock.
>> Mtrr init is quite slow when we bootup on a hvm with large mem, vcpus
>> and pci passthroughed devices(eg. 24 vcpus + 90G mem).
>> It took about ~30 mins to bootup, after patch, it took ~2 min.
> When you're saying "HVM" do you mean "Xen HVM"? How does it behave on
> native hardware?
>
> -hpa
Yes, I mean Xen HVM. Bootup at same speed as before on baremetal.
next prev parent reply other threads:[~2012-08-08 2:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-07 7:29 [PATCH] Parallelize mtrr init between cpus zhenzhong.duan
2012-08-07 9:01 ` zhenzhong.duan
2012-08-07 16:32 ` H. Peter Anvin
2012-08-08 2:08 ` zhenzhong.duan [this message]
2012-08-08 3:53 ` H. Peter Anvin
2012-08-29 5:16 ` zhenzhong.duan
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