| To: | stan@xxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | Re: A little RAID experiment |
| From: | Stefan Ring <stefanrin@xxxxxxxxx> |
| Date: | Wed, 18 Jul 2012 09:22:34 +0200 |
| Cc: | xfs@xxxxxxxxxxx |
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| References: | <CAAxjCEzh3+doupD=LmgqSbCeYWzn9Ru-vE4T8tOJmoud+28FDQ@xxxxxxxxxxxxxx> <CAAxjCEzEiXv5Kna9zxZ-ePbhNg6nfRinkU=PCuyX3QHesq5qcg@xxxxxxxxxxxxxx> <5004875D.1020305@xxxxxxxxxxxxxxxxx> <CAAxjCEw-NJzZmX3Q5CJ+aZ_Q7Yo39pMU=-hiXk0ghTMq7q3PWA@xxxxxxxxxxxxxx> <5004C243.6040404@xxxxxxxxxxxxxxxxx> <20120717052621.GB23387@dastard> <50061CEA.4070609@xxxxxxxxxxxxxxxxx> <CAAxjCEwgDKLF=RY0aCCNTMsc1oefXWfyHKh+morYB9zVUrnH-A@xxxxxxxxxxxxxx> <50066115.7070807@xxxxxxxxxxxxxxxxx> |
> *Gasp* EXT3? Not XFS? Why are posting this thread on XFS? The two > will likely have (significantly) different behavior. Because it was XFS originally which hammered the controller with this disadvantageous pattern. Except for the concurrency, it doesn't matter much on which filesystem sysbench operates. I've previously verified this on another system. > Also, to make any meaningful comparison, we kinda need to know which > controller was targeted by these 3 runs below. ;) It was the Fibre Channel controller, the one with the collapsing throughput. (P2000 G3 MSA, QLogic Corp. ISP2532-based 8Gb Fibre Channel to PCI Express HBA) |
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