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[Bug 1784] Poor performance when do guest save/restore and migration with linux 3.1 dom0

 

 

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bugzilla-daemon at lists

Sep 22, 2011, 12:07 PM

Post #1 of 4 (1092 views)
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[Bug 1784] Poor performance when do guest save/restore and migration with linux 3.1 dom0

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1784





------- Comment #1 from konrad.wilk [at] oracle 2011-09-22 12:07 -------
So is this a RHEL6U1 guest or RHEL6U1 guest with a 3.1.0-rc3 kernel built on
top?


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bugzilla-daemon at lists

Sep 22, 2011, 5:53 PM

Post #2 of 4 (1045 views)
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[Bug 1784] Poor performance when do guest save/restore and migration with linux 3.1 dom0 [In reply to]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1784





------- Comment #2 from xudong.hao [at] intel 2011-09-22 17:53 -------
(In reply to comment #1)
> So is this a RHEL6U1 guest or RHEL6U1 guest with a 3.1.0-rc3 kernel built on
> top?

Guest is RHEL6u1 with its kernel by default, we did not build new kernel in
guest.


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bugzilla-daemon at lists

Sep 23, 2011, 6:21 AM

Post #3 of 4 (1049 views)
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[Bug 1784] Poor performance when do guest save/restore and migration with linux 3.1 dom0 [In reply to]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1784





------- Comment #3 from konrad.wilk [at] oracle 2011-09-23 06:21 -------
OK, so how is 3.1 involved? A bit confused of what you are comparing against?


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bugzilla-daemon at lists

Sep 26, 2011, 8:58 PM

Post #4 of 4 (1045 views)
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[Bug 1784] Poor performance when do guest save/restore and migration with linux 3.1 dom0 [In reply to]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1784





------- Comment #4 from xudong.hao [at] intel 2011-09-26 20:58 -------
(In reply to comment #3)
> A bit confused of what you are comparing against?
Both of guest use RHEL6u1 with its kernel by default, the comparison difference
is only for dom0 kernel, which using kernel 3.1.0-rc3 show poor performance.

> OK, so how is 3.1 involved?
If guest use 3.1 kernel, the data is similar as RHEL6u1's kernel.

==============================================================
Host kernel version Guest kernel save restore migration
==============================================================
vmlinux-2.6-xen RHEL6u1-2.6.32 19s 14s 30s
vmlinux-3.1.0-rc3 RHLE6u1-2.6.32 54s 26s 75s
vmlinux-3.1.0-rc3 kernle 3.1 51s 20s 72s
==============================================================


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