Elukey has uploaded a new change for review.
https://gerrit.wikimedia.org/r/290233
Change subject: Add get_hits_ratio calculation to memcached's gmond agent.
......................................................................
Add get_hits_ratio calculation to memcached's gmond agent.
We currently have only get_hits_rate in gmond, meanwhile it would be
great to calculate get_hits_ratio too. This is a proof of concept
about how I think it could be done easily, but it would need to be
tested.
Bug: T129963
Change-Id: I0ba7673feb09fa67748e4df37d59026ad5c52304
---
M modules/memcached/files/ganglia/gmond_memcached.py
1 file changed, 26 insertions(+), 3 deletions(-)
git pull ssh://gerrit.wikimedia.org:29418/operations/puppet
refs/changes/33/290233/1
diff --git a/modules/memcached/files/ganglia/gmond_memcached.py
b/modules/memcached/files/ganglia/gmond_memcached.py
index 76480af..50d5ac1 100644
--- a/modules/memcached/files/ganglia/gmond_memcached.py
+++ b/modules/memcached/files/ganglia/gmond_memcached.py
@@ -103,15 +103,32 @@
def metric_of(self, name):
val = 0
mp = name.split("_")[0]
- if (name.rsplit("_", 1)[1] == "rate" and
- name.rsplit("_", 1)[0] in self.metric):
+ name_tail = name.rsplit("_", 1)
+ if (name_tail[1] == "rate" and
+ name_tail[0] in self.metric):
_Lock.acquire()
- name = name.rsplit("_", 1)[0]
+ name = name_tail[0]
if name in self.last_metric:
num = self.metric[name]-self.last_metric[name]
period = self.metric[mp+"_time"]-self.last_metric[mp+"_time"]
try:
val = num/period
+ except ZeroDivisionError:
+ val = 0
+ _Lock.release()
+ elif (name_tail[1] == "ratio" and
+ "hits" in name_tail[0] and
+ name_tail[0] in self.metric and
+ name_tail[0].replace("hits","misses") in self.metric):
+ _Lock.acquire()
+ hits_name = name_tail[0]
+ misses_name = hits_name.replace("hits","misses")
+ if hits_name in self.last_metric and
+ misses_name in self.last_metric:
+ hits = self.metric[hits_name]-self.last_metric[hits_name]
+ misses = self.metric[misses_name]-self.last_metric[misses_name]
+ try:
+ val = hits/(hits+misses)
except ZeroDivisionError:
val = 0
_Lock.release()
@@ -261,6 +278,12 @@
"slope": "both",
"description": "Sets per second",
}))
+ descriptors.append(create_desc(Desc_Skel, {
+ "name": mp+"_get_hits_ratio",
+ "units": "items",
+ "slope": "positive",
+ "description": "Get hits ratio (hits/(hits+misses)",
+ }))
# Tokyo Tyrant
if "type" in params and params["type"].lower().find("tokyo") == 0:
--
To view, visit https://gerrit.wikimedia.org/r/290233
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: I0ba7673feb09fa67748e4df37d59026ad5c52304
Gerrit-PatchSet: 1
Gerrit-Project: operations/puppet
Gerrit-Branch: production
Gerrit-Owner: Elukey <[email protected]>
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