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<div class="moz-cite-prefix">On 7/6/2018 9:33 AM, Alan Bishop wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CADO3vb7P=A3eJP41RF-tnWRaC8hDqXYeSmqgK1_naj=3b=_xPw@mail.gmail.com">
<div dir="ltr"><br>
<div class="gmail_quote">
<div dir="ltr">On Fri, Jul 6, 2018 at 10:18 AM Amy Marrich
<<a href="mailto:amy@demarco.com" moz-do-not-send="true">amy@demarco.com</a>>
wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px
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<div dir="ltr">Hey,
<div><br>
</div>
<div>Forwarding to the Dev list as you may get a better
response from there.</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Amy (spotz)</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jul 5, 2018 at 11:30 PM,
Keynes Lee/WHQ/Wistron <span dir="ltr"><<a
href="mailto:Keynes_Lee@wistron.com" target="_blank"
moz-do-not-send="true">Keynes_Lee@wistron.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div lang="ZH-TW">
<div
class="gmail-m_-2023949908997429102m_2424898512532570598WordSection1">
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US">Hi </span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US"> </span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US">When
making “cinder backup-create”</span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US">We
found the process “cinder-backup” use 100%
util of 1 CPU core on an OpenStack Controller
node.</span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US">It
not just causes a bad backup performance, also
make the openstack-cinder-backup unstable.</span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US">Especially
when we make several backup at the same time.</span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US"> </span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US">The
Controller Node has 40 CPU cores.
</span></p>
<p class="MsoNormal"><span
style="font-family:Consolas" lang="EN-US">Can
we assign more CPU resources to cinder-backup
?</span></p>
</div>
</div>
</blockquote>
</div>
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</blockquote>
<div><br>
</div>
<div>This has been addressed in [1], but it may not be in the
release you're using.</div>
<div><br>
</div>
<div>[1] <a
href="https://github.com/openstack/cinder/commit/373b52404151d80e83004a37d543f825846edea1"
moz-do-not-send="true">https://github.com/openstack/cinder/commit/373b52404151d80e83004a37d543f825846edea1</a><br>
</div>
<div><br>
</div>
</div>
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</blockquote>
<br>
In addition to the change above we also have
<a class="moz-txt-link-freetext" href="https://review.openstack.org/#/c/537003/">https://review.openstack.org/#/c/537003/</a> which should also help with
the stability issues. That has been backported as far as Pike. <br>
<br>
The change for multiple processes is only in master for the Rocky
release right now.<br>
<br>
Jay<br>
<br>
<blockquote type="cite"
cite="mid:CADO3vb7P=A3eJP41RF-tnWRaC8hDqXYeSmqgK1_naj=3b=_xPw@mail.gmail.com">
<div dir="ltr">
<div class="gmail_quote">
<div>Alan<span lang="EN-US"> </span><span lang="EN-US"> </span><span
lang="EN-US"> </span><span style="font-family:Consolas"
lang="EN-US"> </span><span lang="EN-US"><br>
</span></div>
<div><span lang="EN-US"></span><span lang="EN-US"> </span>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div lang="ZH-TW">
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<b><span
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lang="EN-US">Keynes Lee
</span></b><b><span
style="font-size:14pt;line-height:115%;font-family:"\0065b0\007d30\00660e\009ad4",serif;color:rgb(0,88,154)">李</span></b><b><span
style="font-size:14pt;line-height:115%;font-family:"\0065b0\007d30\00660e\009ad4-ExtB",serif;color:rgb(0,88,154)">
</span></b><b><span
style="font-size:14pt;line-height:115%;font-family:"\0065b0\007d30\00660e\009ad4",serif;color:rgb(0,88,154)">俊</span></b><b><span
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</span></b><b><span
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Bk";color:rgb(64,64,64)"
lang="EN-US"></span></p>
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<span style="font-family:"Futura
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href="mailto:keynes_lee@wistron.com"
target="_blank"
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