e.g.
noformat
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 *0 *0 0 1|0 n/a n/a n/a n/a n/a n/a n/a n/a n/a 79b 13k 3 09:19:44
no data
*0 *0 *0 *0 0 1|0 n/a n/a n/a n/a n/a n/a n/a n/a n/a 79b 13k 3 09:19:45
{{noformat}]
looks like a subtle timing bug.