On Mon, Dec 04 2006, Chen, Kenneth W wrote:
> > [...]
> >
> > Another idea would be to kill SLAB_HWCACHE_ALIGN (it's pretty pointless,
> > I bet), and always alloc sizeof(*bio) + sizeof(*bvl) in one go when a
> > bio is allocated. It doesn't add a lot of overhead even for the case
> > where we do > 1 page bios, and it gets rid of the dual allocation for
> > the 1 page bio.
>
> I will try that too. I'm a bit touchy about sharing a cache line for
> different bio. But given that there are 200,000 I/O per second we are
> currently pushing the kernel, the chances of two cpu working on two
> bio that sits in the same cache line are pretty small.
Yep I really think so. Besides, it's not like we are repeatedly writing
to these objects in the first place.
--
Jens Axboe
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
