> Chen, Kenneth wrote on Wednesday, December 06, 2006 10:20 AM > > Jens Axboe wrote on Wednesday, December 06, 2006 2:09 AM > > This is what I had in mind, in case it wasn't completely clear. Not > > tested, other than it compiles. Basically it eliminates the small > > bio_vec pool, and grows the bio by 16-bytes on 64-bit archs, or by > > 12-bytes on 32-bit archs instead and uses the room at the end for the > > bio_vec structure. > > Yeah, I had a very similar patch queued internally for the large benchmark > measurement. I will post the result as soon as I get it.
Jens, this improves 0.25% on our db transaction processing benchmark setup. The patch tested is (on top of 2.6.19): http://marc.theaimsgroup.com/?l=linux-kernel&m=116539972229021&w=2 - Ken - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/