![]() | |||||||||||||
Messages in this thread |
On Tue, May 11 2004, Nick Piggin wrote: > Jens Axboe wrote: > >On Fri, May 07 2004, Chen, Kenneth W wrote: > > > >>>>>>Jens Axboe wrote on Friday, May 07, 2004 2:39 AM > >>> > >>>On Thu, May 06 2004, Chen, Kenneth W wrote: > >>> > >>>>(3) can we allocate request structure up front in __make_request? > >>>> For I/O that cannot be merged, the elevator code executes twice > >>>> in __make_request. > >>>> > >>> > >>>Actually, with the good working batching we might get away with killing > >>>freereq completely. Have you tested that (if not, could you?) > >> > >>Sorry, I'm clueless on "good working batching". If you could please give > >>me some pointers, I will definitely test it. > > > > > >Something like this. > > > > While we're doing that can we drop the GFP_ATOMIC allocation > completely? Thought the same thing. But lets stick to single item tests first, then we can kill that double allocation after. -- Jens Axboe - 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/ | ||||||||||||
| Last update: 2005-03-22 13:03 [from the cache] ©2003-2008 | |||||||||||||