EBernhardson has uploaded a new change for review. (
https://gerrit.wikimedia.org/r/365406 )
Change subject: Configure CirrusSearch-MoreLike pool counter
......................................................................
Configure CirrusSearch-MoreLike pool counter
A reduction in the varnish cache hit rate for related articles
led to an overload of the search cluster, because the very expensive
morelike queries were in the same poolcounter as regular search
queries. Split them out into their own pool counter to allow setting
a much lower limit.
Bug: T170648
Change-Id: Iec51f5407f63854c1557b38ed23cd3274d020876
---
M wmf-config/PoolCounterSettings.php
1 file changed, 10 insertions(+), 1 deletion(-)
git pull ssh://gerrit.wikimedia.org:29418/operations/mediawiki-config
refs/changes/06/365406/1
diff --git a/wmf-config/PoolCounterSettings.php
b/wmf-config/PoolCounterSettings.php
index 135b746..a0062a0 100644
--- a/wmf-config/PoolCounterSettings.php
+++ b/wmf-config/PoolCounterSettings.php
@@ -14,7 +14,7 @@
'CirrusSearch-Search' => [
'class' => 'PoolCounter_Client',
'timeout' => 15,
- 'workers' => 432,
+ 'workers' => 382,
'maxqueue' => 600,
],
// Super common and mostly fast
@@ -46,6 +46,15 @@
'workers' => 50,
'maxqueue' => 200,
],
+ // These are very expensive and incredibly common at more than 5M per
hour
+ // before varnish caching. If the somehow the cache hit rate drops this
+ // protects the cluster
+ 'CirrusSearch-MoreLike' => [
+ 'class' => 'PoolCounter_Client',
+ 'timeout' => 5,
+ 'workers' => 50,
+ 'maxqueue' => 200,
+ ],
'FileRender' => [
'class' => 'PoolCounter_Client',
'timeout' => 8,
--
To view, visit https://gerrit.wikimedia.org/r/365406
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: Iec51f5407f63854c1557b38ed23cd3274d020876
Gerrit-PatchSet: 1
Gerrit-Project: operations/mediawiki-config
Gerrit-Branch: master
Gerrit-Owner: EBernhardson <ebernhard...@wikimedia.org>
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