Re: [PATCH] fix page_alloc for larger I/O segments (improved)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, Dec 14, 2007 at 05:42:37PM +0000, Mel Gorman wrote:
> Regrettably this interferes with anti-fragmentation because the "next" page
> on the list on return from rmqueue_bulk is not guaranteed to be of the right
> mobility type. I fixed it as an additional patch but it adds additional cost
> that should not be necessary and it's visible in microbenchmark results on
> at least one machine.

Is this patch to be preferred to the one Andrew Morton posted to do
list_for_each_entry_reverse?

I'll send it to our DB team to see if this improves our numbers at all.

-- 
Intel are signing my paycheques ... these opinions are still mine
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Filesystems]     [Linux SCSI]     [Linux RAID]     [Git]     [Kernel Newbies]     [Linux Newbie]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Samba]     [Device Mapper]

  Powered by Linux