Messages in this thread | | | Date | Wed, 9 Mar 2005 20:28:01 -0800 | From | Andrew Vasquez <> | Subject | Re: Direct io on block device has performance regression on 2.6.x kernel |
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On Wed, 09 Mar 2005, Chen, Kenneth W wrote:
> Andrew Morton wrote Wednesday, March 09, 2005 6:26 PM > > What does "1/3 of the total benchmark performance regression" mean? One > > third of 0.1% isn't very impressive. You haven't told us anything at all > > about the magnitude of this regression. > > 2.6.9 kernel is 6% slower compare to distributor's 2.4 kernel (RHEL3). Roughly > 2% came from storage driver (I'm not allowed to say anything beyond that, there > is a fix though). >
Ok now, that statement piqued my interest -- since looking through a previous email it seems you are using the qla2xxx driver. Care to elaborate?
Regards, Andrew Vasquez - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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