> # Statistics for device aoestorage1-90-2-2000r6 > read_cnt: 5235045 > read_bytes: 21442744320 > read_time: 9663.53 > write_cnt: 0 > write_bytes: 0 > write_time: 0 > other_cnt: 304 > other_time: 0.0212562 > io_slots: 1117752 > io_runs: 96727 > queue_length: 786443640 > queue_stall: 1753 > queue_over: 0 > ata_err: 0 > proto_err: 0 > > I can get a very low "queue_stall" number by setting "merge-delay = > 0.002" in ggaoed.conf, if not setting merge-delay queue_stall is > extremely high.
> And "queue_over" is 0 when setting "queue-length = 1024". If I set > queue-length to 64 I get extremely high queue_over number... # Statistics for device aoestorage1-90-2-2000r6 read_cnt: 16720474 read_bytes: 72916687360 read_time: 30601.7 write_cnt: 2101809 write_bytes: 8609009664 write_time: 8550.47 other_cnt: 1125131 other_time: 24.4878 io_slots: 4457695 io_runs: 397886 queue_length: 2795517659 queue_stall: 6826 queue_over: 0 ata_err: 46 proto_err: 0 I get some ata errors with an exported RAID6 array, but none for another RAID10 array on the same controller. Controller is: Adapter: 0 Product Name: Supermicro SMC2108 Memory: 512MB BBU: Present Serial No: What can cause ata_err ? (connected to several initiators all reporting ata error): aoe: ata error cmd=24h stat=41h from e90.2 end_request: I/O error, dev etherd/e90.2, sector 3898431360 Buffer I/O error on device etherd/e90.2, logical block 487303920 aoe: ata error cmd=24h stat=41h from e90.2 end_request: I/O error, dev etherd/e90.2, sector 3898431360 Buffer I/O error on device etherd/e90.2, logical block 487303920 ... I've checked the physical raid array on the target but this have no errors, and all disks are good. Can merge-delay or queue-length cause ata errors? ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Aoetools-discuss mailing list Aoetools-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aoetools-discuss
