Messages in this thread | | | Date | Thu, 6 May 2004 20:02:10 -0700 | From | Andrew Morton <> | Subject | Re: Cache queue_congestion_on/off_threshold |
| |
"Chen, Kenneth W" <kenneth.w.chen@intel.com> wrote: > > >>>> Jens Axboe wrote on Wed, May 05, 2004 11:43 PM > > On Wed, May 05 2004, Andrew Morton wrote: > > > Jens Axboe <axboe@suse.de> wrote: > > > > > > > > Do you have any numbers at all for this? I'd say these calculations are > > > > severly into the noise area when submitting io. > > > > > > The difference will not be measurable, but I think the patch makes sense > > > regardless of what the numbers say. > > > > Humm dunno, I'd rather save the sizeof(int) * 2. > > Strictly speaking from memory consumption point of view, it probably comes > for free since sizeof(struct request_queue) currently is 456 bytes on x86 > and 816 on 64bit arch. The structure is being rounded to 512 or 1024 with > kmalloc.
That's a good argument for creating a standalone slab cache for request queue structures ;) - 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/
| |