Details
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Bug
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Resolution: Done
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Major - P3
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3.0.1
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Fully Compatible
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ALL
Description
Test is:
- 7 shard each with 3 member replicaset
- traffic is 100% read (query to return single doc)
- profiling with 3.0.1 mongos
Here is output from linux perf for mongos
- 19.95% mongos [kernel.kallsyms] [k] _raw_spin_unlock_irqrestore
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- _raw_spin_unlock_irqrestore
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+ 70.21% __wake_up_sync_key
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- 23.63% try_to_wake_up
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wake_up_state
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wake_futex
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futex_wake
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do_futex
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sys_futex
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system_call_fastpath
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- __lll_unlock_wake
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- 35.44% mongo::DBClientReplicaSet::getServerAddress() const
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mongo::DBClientCursor::_finishConsInit()
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mongo::DBClientCursor::DBClientCursor(mongo::DBClientBase*, std::string const&, mongo::BSONObj, int, int, mongo::BSONObj const*, int, int)
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mongo::ParallelSortClusteredCursor::startInit()
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mongo::ParallelSortClusteredCursor::fullInit()
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mongo::Strategy::queryOp(mongo::Request&)
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mongo::Request::process(int)
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mongo::ShardedMessageHandler::process(mongo::Message&, mongo::AbstractMessagingPort*, mongo::LastError*)
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mongo::PortMessageServer::handleIncomingMsg(void*)
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start_thread
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