Elasticsearch : Number of search operation per second - performance

Question

I am looking for a way to get the number of search operation per a second on a node (and / or on all nodes).
Is there a way to get this information without the Marvel plugin?
My ElasticSearch version is 0.90.11

Answer 1

Marvel does it by sampling. If you write a script to repeatedly run curl http://localhost:9200/_stats/search and parse the a result that looks like this:
...
"_all" : {
"primaries" : {
"search" : {
"open_contexts" : 0,
"query_total" : 51556,
"query_time_in_millis" : 2339958,
"query_current" : 0,
"fetch_total" : 8276,
"fetch_time_in_millis" : 34916,
"fetch_current" : 0
}
},
"total" : {
"search" : {
"open_contexts" : 0,
"query_total" : 73703,
"query_time_in_millis" : 2773745,
"query_current" : 0,
"fetch_total" : 10428,
"fetch_time_in_millis" : 45570,
"fetch_current" : 0
}
}
},
...
You can see the query_total values -- just repeatedly query those at some interval and then do the math.

Answer 2

Thanks Alcanzar.
Here is the script I created :
if [[ $1 == "" ]]
then
echo "Usage : $0 <refresh_interval_in second>"
echo "Example : ./$0 10"
exit 1
fi
refresh_interval=$1
while true; do
begin=$(curl --silent http://localhost:9200/_stats/search?pretty | grep '"query_total" :' | sed -n 2p | sed 's/,$//' | awk '{print $3}')
sleep $refresh_interval
end=$(curl --silent http://localhost:9200/_stats/search?pretty | grep '"query_total" :' | sed -n 2p | sed 's/,$//' | awk '{print $3}')
total=$(echo $(((( $end - $begin )) / $refresh_interval)))
echo $(date +"[%T] ")"Search ops/sec : "$total
done
For instance, refreshing every 10 seconds, execute : sh script.sh 10