From: Herbert Xu <[EMAIL PROTECTED]> Date: Wed, 31 May 2006 14:03:07 +1000
> I must say though that I'm becoming less and less impressed by the > lockless feature based on the number of problems that it has caused. > Does anyone have any hard figures as to its effectiveness (excluding > any stats relating to the loopback interface which can be easily > separated from normal NIC drivers). There were numbers posted for real drivers at one point, I do remember that, and the gains were non-trivial. At least enough to justify the feature. As per the bug, I always keep thinking about changing how we do the lockless stuff by simply making xmit_lock a pointer. Drivers like tg3 can make it point to their local driver lock. This leaves still the cases like loopback which do no locking whatsoever. I don't know how to fit it into the above idea. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
