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<p>Hi there,</p>
<p>I think I should send this note more early given the holiday
season :) We (Catalyst Cloud) have done some work recently about
the performance of Horizon, especially for the instance panel,
which more cloud providers can be benefited. Here is the list:</p>
<p>1. <a class="gwt-InlineHyperlink"
href="https://review.openstack.org/510718">Allow to skip API
calls to Neutron in instance tables</a></p>
<p>2. <a class="gwt-InlineHyperlink"
href="https://review.openstack.org/509676">Add cache for
get_microversion() against Nova</a></p>
<p>3. <a class="gwt-InlineHyperlink"
href="https://review.openstack.org/509038">Remove the quota
check for "Launch Instance" button</a> NOTE: This one has been
reverted. The comments from Horizon team is, though it's good, but
the behavior is not consistent with the other panels. Personally,
I don't like the excuse, I prefer to do the same thing for all the
other panels.</p>
<p>4. <a class="gwt-InlineHyperlink"
href="https://review.openstack.org/511095">Add white list for
Nova extension</a> NOTE: It's not accepted by Horizon team, so
we're going to keep it in our private repo.</p>
<p>5. <a class="gwt-InlineHyperlink"
href="https://review.openstack.org/510392">Make image name on
instances panel configurable</a> NOTE: It's not accepted by
Horizon team, so we're going to keep it in our private repo.</p>
<p>So far, we haven't got too much performance issue on the other
panels. Because the performance issue about Horizon is really
related to the the API calls. There are too much API calls on
instance panel and it's related the number of instances when
listing. Generally, when listing 20 instances per page could cost
10s-12s on our cloud before, with above 5 patches, it could be
reduced to 3s-4s. <br>
</p>
<p>Hopefully above information is helpful.</p>
<p><br>
</p>
<pre class="moz-signature" cols="72">--
Cheers & Best regards,
Feilong Wang (王飞龙)
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Senior Cloud Software Engineer
Tel: +64-48032246
Email: <a class="moz-txt-link-abbreviated" href="mailto:flwang@catalyst.net.nz">flwang@catalyst.net.nz</a>
Catalyst IT Limited
Level 6, Catalyst House, 150 Willis Street, Wellington
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