On Sat, Feb 1, 2014 at 9:30 PM, Mark Lord <mlord@xxxxxxxxx> wrote: > On 14-02-01 02:54 AM, Ming Lei wrote: > .. >> With SG enabled, for the iperf client test case, the average urb size >> for transmission will be increased from ~1500 to ~20K bytes in my >> test case: >> >> iperf -c $SRV -t 30 -P 4 -w 128K >> >> So I am wondering you guys do not care the improvement .. > > No, that's not it. Simply, the recent changes killed the driver I just want to clarify the sg approach does improve performance, instead of no improvement mentioned by your guys. > for some users, something Linus calls a "regression", and does not permit. Even real regressions are easily/often introduced, and we are discussing how to fix that. I suggest to unset the flag only for the known buggy controllers. Thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
