Mongodb {serverStatus:1} 详细解释

aa0660

> db.serverStatus()



FieldExample ValueExplanation

host
my.node.com
The hostname of this server


version
1.8.0-rc1-pre-
The version number of this server


process
mongod
What is the process? (mongod, mongos)


uptime
14143
Uptime in seconds


uptimeEstimate
12710
Uptime based on MongoDB's internal coarse grained timer


localTime
ISODate("2011-03-01T05:30:16.682Z")
The local time at this server (time is in UTC).


globalLock.totalTime
14143457121
The number of microseconds since startup that the global lock was created


globalLock.lockTime
17166
The number of microseconds that the global lock has been held since it was created


globalLock.ratio
0.0000012137060870720337
The ratio between lockTime & totalTime


globalLock.currentQueue.total
12
The current number of operations queued waiting for the global lock


globalLock.currentQueue.readers
10
The current number of operations queued waiting on a read lock


globalLock.currentQueue.writers
2
The current number of operations queued waiting for a write lock


globalLock.activeClients.total
3
Total number of active clients connected to this server


globalLock.activeClients.readers
2
The total number of active clients currently performing read operations


globalLock.activeClients.writers
1
The total number of active clients currently performing write operations


mem.bits
64
Is this a 32 or 64 bit architecture?


mem.resident
20
number of megabytes resident. It is typical over time, on a dedicated database server, for this number to approach the amount of physical ram on the box.


mem.virtual
2502
virtual megabytes for the mongod process. Generally virtual should be a little larger than mapped, but if virtual is many gigabytes larger, that could indicate a memory leak - with journalling, virtual is twice mapped


mem.supported
true
Whether or not this machine supports extended memory info. If this is false, other values in 'mem' may not be present


mem.mapped
80
As MongoDB memory maps all the data files, this number is likely similar to your total database(s) size.


connections.current
23
The number of currently active connections to this server


connections.available
50
The number of available connections remaining


extra_info.heap_usage_bytes
234342
The number of bytes of heap used by this process. Only available on linux


extra_info.page_faults
2523
The number of page faults on this process. Only available on linux


indexCounters.btree.accesses
2342
The number of times the btree indexes have been accessed


indexCounters.btree.hits
2340
The number of times a btree page was in memory


indexCounters.btree.misses
2
The number of times a btree page was not in memory


indexCounters.btree.resets
0
The number of times the index counters have been reset to 0


indexCounters.btree.missRatio
0
The ratio of misses to hits on the btree


backgroundFlushing.flushes
214
The number of times the database has flushed writes to disk


backgroundFlushing.total_ms
1357
The total number of ms that the database has spent flushing data to disk


backgroundFlushing.average_ms
6.341121495327103
The average number of ms it takes to perform a single flush


backgroundFlushing.last_ms
7
The number of ms that the last flush took to complete


backgroundFlushing.last_finished
ISODate("2011-03-01T05:29:44.124Z")
The timestamp from when the last flush was completed


cursors.totalOpen
0
The total number of cursors that the server is maintaining for clients


cursors.clientCursors_size
[deprecated] Same as cursors.totalOpen


cursors.timedOut
0
The number of cursors that have timed out since this server was started


network.bytesIn
1430
The total number of bytes sent to this database


network.bytesOut
2140
The total number of bytes sent from this database


network.numRequests
20
The total number of requests that have been sent to this database


repl.setName
mySet
The name of the replica set that this server is a part of


repl.ismaster
true
Whether or not this node is the master of the replica set


repl.secondary
false
Whether or not this node is a secondary of the replica set


repl.hosts
[ "my.node.com:27017", "other.node.com:27017", "third.node.com:27017"]
The set of hosts in this replica sets


opcounters.insert
0
The total number of inserts performed since this process started


opcounters.query
9
The total number of queries performed since this process started


opcounters.update
0
The total number of updates performed since this process started


opcounters.delete
0
The total number of deletes performed since this process started


opcounters.getmore
0
The total number of times getMore has been called on any cursor since this process started


opcounters.command
13
The total number of other commands performed since this process started


asserts.regular
0
The number of regular asserts raised since this process started


asserts.warning
0
The number of warnings raised since this process started


asserts.msg
0
The number of message asserts. These are internal server errors that have a well defined text string. Stack traces are logged for these


asserts.user
0
The number of user asserts. These are errors that can be generated by a user such as out of disk space or duplicate key


asserts.rollovers
0
The number of times the assert counters have rolled over since this process started


writeBacksQueued
false
Whether or not there are any operations from a mongos that have to be retried


dur.commits
0
The number of commits to the journal that have occured in the last interval


dur.journaledMB
0
MBs of data written to the journal in the last interval


dur.writeToDataFilesMB
0
MBs of data written from journal to data files in the last interval


dur.commitsInWriteLock
0
The number of commits in the last interval which were in a write lock. Commits in a write lock are undesirable


dur.earlyCommits
0
Number of times a commit was requested before the scheduled time


dur.timeMs.dt
3011
The time length of the interval over which the dur statswere collected


dur.timeMs.prepLogBuffer
0
The amount of time spent preparing to write to the journal


dur.timeMs.writeToJournal
0
The amount of time spent actually writing to the journal


dur.timeMs.writeToDataFiles
0
The amount of time spent writing to datafiles after journaing


dur.timeMs.remapPrivateView
0
The amount of time spent remapping copy-on-write memory mapped views


ok
1
Whether or not serverStatus returned correctly