> there's several tunables you can do; > 1) increase /sys/block/<device>/queue/nr_requests > the linux default is on the low side > 5) echo a larger value into /sys/block/<device>/queue/max_sectors_kb > the default seems to be 512 which is... really low. The hw max is in > another file in that directory; if you want max throughput set the > max_sectors_kb value to the hw max. (you pay in terms of fairness for
There are two more factors that play into #1 and #5. Firstly there is a per command completion overhead in ATA without NCQ being active and that isn't yet a heavily optimised libata path. Secondly erase block size matters with flash drives so the bigger each I/O the better erase block behaviour we should get. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
