On Mon, Aug 23, 2010 at 11:11 AM, Bart Van Assche <bvanassche@xxxxxxx> wrote: > > There is an important design difference between SCST and LIO: SCST by > defaults creates multiple threads to process the I/O operations for a > storage target, while LIO only creates a single thread per storage target. > This makes SCST perform measurably faster. > Forget that. You could have discussed this if there were code reviews or other mainline inclusion emails from James B. From what I have heard, the decision was taken around 8-9 months back. Would anyone like to either comment/validate/refute this please? If not then I would kindly request these guys to stop taking us for a test drive. And also I'm not sure when was the last time James B. bench-marked our scsi-stack. Even if I ACK in the xmit-path then I can't push more than 100K IOPs. But other folks have re-engineered our linux-scsi stack and from what I've heard they can push > 300K+ IOPs. So I would just ignore performance discussion because I don't think folks have done even simple lame experiments in the last 1 year. Or may be I'm completely wrong and so please enlighten me so that I can re-run the tests. > Bart. > Chetan Loke -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
