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| From: | Paolo Bonzini |
| Subject: | [Qemu-devel] Re: How can I understand CONFIG_IO_THREAD ? |
| Date: | Mon, 21 Feb 2011 09:16:55 +0100 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.7 |
On 02/21/2011 04:13 AM, wang sheng wrote:
What is the purpose of io_thread desigment in qemu ?
There was a lengthy thread recently explaining how it helps fixing a possibly delay in handling I/O. It is also useful for KVM, where you have one I/O thread and multiple CPU threads. This way, KVM can implement "real" SMP (i.e. multiple virtual CPUs running concurrently).
Paolo
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