Log file Viewer

[19:37:09] <daedeloth> noob question, i have a document that contains an array of ids. Now given one id, i want to count how much documents contain that

[19:37:18] <daedeloth> how would i do that? :)

[23:38:05] <koniu> heya, i've been running some benchmarks for bare metal mongo deployment and getting confusing results

[23:39:27] <koniu> debian linux host, mongo data on a 6-drive raid10

[23:39:33] <koniu> xf

[23:39:35] <koniu> xfs

[23:40:59] <koniu> testing different raid chunk sizes (64k vs default 512k), raid layout (f2 vs n2), ncq on/off, scheduler noop vs deadline, readahead (8, 32, 256)

[23:43:38] <koniu> main dillema is around the raid layout at this point. everything i've read is that f2 is faster for both sequential and random read but my results don't exactly bear that out

[23:43:54] <koniu> anyone with experience of linux raid10 layouts and mongo?

[23:50:22] <koniu> also dunno a lot about mongo (or optimizing io for DBs), i'm timing this as one of the tests- for (i=1; i<10; i++) { db.account.find({"created_utc": {$gt : i}}).count() } - any comments appreciated