MongoDB shell version: 1.5.6-pre- connecting to: test loading data (will take a bit) loaded 0 mibi-records loaded 1 mibi-records loaded 2 mibi-records loaded 3 mibi-records loaded 4 mibi-records loaded 5 mibi-records loaded 6 mibi-records loaded 7 mibi-records loaded 8 mibi-records loaded 9 mibi-records making an index (will take a bit) shell: started program mongo --eval db=db.getSisterDB('concurrency'); db.conc.update({}, {$inc:{x: 10485760}}, false, true); print(db.getLastError()); db.concflag.update({},{inprog:false}) 127.0.0.1 sh17584| MongoDB shell version: 1.5.6-pre- sh17584| connecting to: 127.0.0.1/test 10485760 8429184 7087232 5713728 4862272 3870080 3090432 2517824 2034377 1749181 1381641 1155520 964032 783808 621952 500736 411008 351104 287142 231348 185856 0 152704 130944 112064 100288 0 78400 68608 62906 56128 53741 50368 46272 43114 39552 38080 35584 32576 30336 0 27836 25844 24000 22655 19776 18240 16576 14952 13490 10944 9472 8044 6528 5504 4032 2752 2304 1664 960 0 sh17584| null 0 62 queries, 57 decrements, 5 misses