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Type:
Improvement
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Resolution: Unresolved
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: Diagnostics
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Labels:
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Query Execution
The global latency stats Server Status section currently aggregates all the latency information known to the server.
We have a need for the same information except aggregated by database.
For example, today we have:
db.serverStatus().opLatencies
{
"reads" : {
"latency" : NumberLong(9404373),
"ops" : NumberLong(90552)
},
"writes" : {
"latency" : NumberLong(4846358),
"ops" : NumberLong(22579)
},
"commands" : {
"latency" : NumberLong(8227275),
"ops" : NumberLong(108682)
},
"transactions" : {
"latency" : NumberLong(0),
"ops" : NumberLong(0)
}
}
I'm hoping to get a response like this, probably using an aggregation stage like $collStats:
use admin
db.system.aggregate( [ { $globalLatencyStats: { latencyStats: { } } } ] );
{[{ "db" : "firstdb",
"reads" : {
"latency" : NumberLong(9404373),
"ops" : NumberLong(90552)
},
"writes" : {
"latency" : NumberLong(4846358),
"ops" : NumberLong(22579)
},
"commands" : {
"latency" : NumberLong(8227275),
"ops" : NumberLong(108682)
},
"transactions" : {
"latency" : NumberLong(0),
"ops" : NumberLong(0)
}},
{ "db" : "seconddb",
"reads" : {
"latency" : NumberLong(9404373),
"ops" : NumberLong(90552)
},
"writes" : {
(etc...)