2015 - 05 - 13 T21: 55: 10.876 + 0800 I QUERY[conn8674] killcursors keyUpdates: 0 writeConflicts: 0 numYields: 0 locks: {
Global: {
acquireCount: {
r: 1
}
},
MMAPV1Journal: {
acquireCount: {
r: 1
}
},
Database: {
acquireCount: {
r: 1
}
},
Collection: {
acquireCount: {
R: 1
}
}
}
1641 ms 2015 - 05 - 13 T21: 55: 10.877 + 0800 I QUERY[conn8618] killcursors keyUpdates: 0 writeConflicts: 0 numYields: 0 locks: {
Global: {
acquireCount: {
r: 1
}
},
MMAPV1Journal: {
acquireCount: {
r: 1
}
},
Database: {
acquireCount: {
r: 1
}
},
Collection: {
acquireCount: {
R: 1
}
}
}
1648 ms
MongoDB slow log (profiler) shows many many "killcursors" action when heavy load comes, why? and what killcursors do?
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