On 2012-06-15, at 4:04 PM, Ted Ts'o wrote:
> On Thu, Jun 14, 2012 at 09:55:31PM +, Arnd Bergmann wrote:
>> There is one more option we have to give the best possible performance,
>> although that would be a huge amount of work to implement:
>>
>> Any large file gets put into its own context, a
On 2012-06-15, at 3:25 AM, Arnd Bergmann wrote:
> On Friday 15 June 2012, Andreas Dilger wrote:
>> On 2012-06-14, at 3:55 PM, Arnd Bergmann wrote:
>>> My feeling is that we would actually benefit much more from the
>>> erase block alignment than from the context for
On 2012-06-14, at 3:55 PM, Arnd Bergmann wrote:
> My feeling is that we would actually benefit much more from the
> erase block alignment than from the context for the large files.
>
> I think this is something we can do in the Linaro storage team.
> We actually have plans to also put the erase bl
On 2011-05-30, at 10:04 AM, Romain Izard wrote:
> During reliability testing of an embedded Linux system using a eMMC chip
> for code storage and execution, I have encountered occurences of
> corruption outside of the partition being tested, typically breaking the
> test in progress. This is a rand
On May 5, 2011, at 12:10, Matthew Wilcox wrote:
> On Wed, May 04, 2011 at 08:51:39AM -0600, Andreas Dilger wrote:
>> I was aware of REQ_META, but I didn't know there was any benefit to
>> using it. I think it would be easy to set REQ_META on all ext4 metadata
>> if t
On 2011-05-04, at 5:45 AM, "Gao, Yunpeng" wrote:
>> Yes, I have been working on some changes that allow us to tag bios and
>> pass the information out to storage. These patches have been on the back
>> burner for a while due to other commitments. But I'll dig them out and
>> post them later. We ju
On 2011-03-22, at 2:56 PM, Arnd Bergmann wrote:
> On Tuesday 22 March 2011, Andreas Dilger wrote:
>> On 2011-03-21, at 8:05 PM, Arnd Bergmann wrote:
>>> So would I set the stripe_width to the erase block size, and the
>>> block group size to a multiple of that?
>>
On 2011-03-21, at 8:05 PM, Arnd Bergmann wrote:
> On Monday 21 March 2011 19:03:09 Andreas Dilger wrote:
>> Note that mballoc was specifically designed to handle allocation
>> requests that are aligned on RAID stripe boundaries, so it should
>> be able to handle this for
On 2011-03-21, at 3:41 PM, Andrei Warkentin wrote:
> On Mon, Mar 21, 2011 at 9:21 AM, Arnd Bergmann wrote:
>>> Attached file (I hope you don't mind PDFs) contains data collected for
>>> two possible optimizations. The second page of the document tests the
>>> vendor suggested optimization that is
