On Fri, Oct 18, 2013 at 03:14:19PM +0200, Matias Bjorling wrote: > Performance study: > > System: HGST Research NVMe prototype, Haswell i7-4770 3.4Ghz, 32GB 1333Mhz
I don't have one of these. Can you provide more details about it, such as: - How many I/O queues does it have? - Are the interrupts correctly bound to the CPUs (for both sets of tests)? The driver isn't allowed to set the irq affinity correctly itself; it can only set a hint and userspace (eg irqbalance) has to set the affinity correctly - Does it support interrupt coalescing? If so, have you managed to do any testing using that feature? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
