On Fri, 15 Mar 2013, Noone Nowhere wrote: > USB stick on 12 different EHCI USB hosts. On VT8235M it took ages to > go to 1000. A human readable timestamp could be used. Evidently the VT8235M is very slow for some of the operations used by the test program. > To sum up printing a start up message to leave it run up to 1000 is > necessary It is not necessary. I mentioned this in the original email where the program was first distributed. > as well as a warning to stop it using control+Z in avoid to > avoid dmesg spamming. Control-Z will not kill the program; the best way to stop it is to unplug the test device. Doing this does not cause any dmesg spamming (unless you have CONFIG_USB_DEBUG enabled, in which case the extra messages are appropriate). > Timestamps is another improvement Why does anybody care about timestamps? > and fixing the > block count issue is the last one as on 2 controllers (moschip and > SB850) the program exited immediately after initialization. I can't fix the block count issue. That's not a bug in the program; it's a bug somewhere else. > First we > must deal with those 2 controllers and check all hosts with the new > version again. Since you prefer the logs with the current program, no > problem. You will receive a message after this one with all the logs > to keep you happy. Despite that, notice that when the program will be > able to run on all hosts, we shall retest and resend the results. Are > there any performance or reliability issues from this bug except the > original DVB card detection problem? Will the workaround affect > performance? This EHCI bug is not related to DVB card detection. I don't know what original problem you're referring to. A workaround for the bug has already been submitted to the various stable kernel series. The workaround may decrease performance slightly for things like large data transfers to/from a mass-storage device. I haven't tried to measure the effect, and it will be different on different platforms anyway. Alan Stern -- 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
