From: Linus TorvaldsTo: Rik van Riel Subject: Re: PATCH(?): linux-2.4.4-pre2: fork should run child first Date: Fri, 13 Apr 2001 21:40:16 -0700 (PDT) Cc: "Adam J. Richter" , On Sat, 14 Apr 2001, Rik van Riel wrote: > > Also, have you managed to find a real difference with this? It actually makes a noticeable difference on lmbench, so I think adam is 100% right. > If it turns out to be beneficial to run the child first (you > can measure this), why not leave everything the same as it is > now but have do_fork() "switch threads" internally ? Probably doesn't much matter. We've invalidated the TLB anyway due to the page table copy, so the cost of switching the MM is not all that noticeable. Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/