Hi, Andrew,
I have updated the results for tmpfs last week and Hugh already ack
this patchset on Mar 4 in "[PATCH 1/1] mm: implement ->map_pages for
shmem/tmpfs"
Acked-by: Hugh Dickins
Please consider to apply this patch so that tmpfs will have the
similar feature together with the other file
Hi, Andrew,
I have updated the results for tmpfs last week and Hugh already ack
this patchset on Mar 4 in [PATCH 1/1] mm: implement -map_pages for
shmem/tmpfs
Acked-by: Hugh Dickins hu...@google.com
Please consider to apply this patch so that tmpfs will have the
similar feature together with
On Mon, Mar 03, 2014 at 03:37:07PM -0800, Andrew Morton wrote:
> On Mon, 3 Mar 2014 15:29:00 -0800 Linus Torvalds
> wrote:
>
> > On Mon, Mar 3, 2014 at 2:38 PM, Andrew Morton
> > wrote:
> > >
> > > When the file is uncached, results are peculiar:
> > >
> > > 0.00user 2.84system 0:50.90elapsed
On Mon, Mar 3, 2014 at 2:38 PM, Andrew Morton wrote:
>
> When the file is uncached, results are peculiar:
>
> 0.00user 2.84system 0:50.90elapsed 5%CPU (0avgtext+0avgdata
> 4198096maxresident)k
> 0inputs+0outputs (1major+49666minor)pagefaults 0swaps
>
> That's approximately 3x more minor faults.
Actually this one is just using the generic functions provided in
Kirill's patch.
And Kirill just sent another email earlier with two fixes reported by
Hugh and I.
So it doesn't change anything in this patch. I will update the log and
work on the
experiment results. I already asked Kirill
Actually this one is just using the generic functions provided in
Kirill's patch.
And Kirill just sent another email earlier with two fixes reported by
Hugh and I.
So it doesn't change anything in this patch. I will update the log and
work on the
experiment results. I already asked Kirill
On Mon, Mar 3, 2014 at 2:38 PM, Andrew Morton a...@linux-foundation.org wrote:
When the file is uncached, results are peculiar:
0.00user 2.84system 0:50.90elapsed 5%CPU (0avgtext+0avgdata
4198096maxresident)k
0inputs+0outputs (1major+49666minor)pagefaults 0swaps
That's approximately 3x
On Mon, Mar 03, 2014 at 03:37:07PM -0800, Andrew Morton wrote:
On Mon, 3 Mar 2014 15:29:00 -0800 Linus Torvalds
torva...@linux-foundation.org wrote:
On Mon, Mar 3, 2014 at 2:38 PM, Andrew Morton a...@linux-foundation.org
wrote:
When the file is uncached, results are peculiar:
Yes, the simple test does verify that the page fault number are
correct with the patch. So my previous results are from those command
lines, which also show some performance improvement with this change
in tmpfs.
sequential access
/usr/bin/time -a ./iozone —B s 8g -i 0 -i 1
random access
Yes, I am using the iozone -i 0 -i 1. Let me try the most simple test
as you mentioned.
Best wishes,
--
Ning Qu
On Fri, Feb 28, 2014 at 5:41 PM, Andrew Morton
wrote:
> On Fri, 28 Feb 2014 16:35:16 -0800 Ning Qu wrote:
>
>> Sorry about my fault about the experiments, here is the real one.
>>
On Fri, 28 Feb 2014 16:35:16 -0800 Ning Qu wrote:
> Sorry about my fault about the experiments, here is the real one.
>
> Btw, apparently, there are still some questions about the results and
> I will sync with Kirill about his test command line.
>
> Below is just some simple experiment
Sorry about my fault about the experiments, here is the real one.
Btw, apparently, there are still some questions about the results and
I will sync with Kirill about his test command line.
Below is just some simple experiment numbers from this patch, let me know if
you would like more:
Tested
On Fri, 28 Feb 2014 14:18:50 -0800 Ning Qu wrote:
> This is a follow-up patch for "mm: map few pages around fault address if they
> are in page cache"
>
> We use the generic filemap_map_pages as ->map_pages in shmem/tmpfs.
>
Please cc Hugh on shmem/tmpfs things
>
>
This is a follow-up patch for "mm: map few pages around fault address if they
are in page cache"
We use the generic filemap_map_pages as ->map_pages in shmem/tmpfs.
Please consider applying.
=
Below is just some simple
This is a follow-up patch for mm: map few pages around fault address if they
are in page cache
We use the generic filemap_map_pages as -map_pages in shmem/tmpfs.
Please consider applying.
=
Below is just some simple
On Fri, 28 Feb 2014 14:18:50 -0800 Ning Qu qun...@google.com wrote:
This is a follow-up patch for mm: map few pages around fault address if they
are in page cache
We use the generic filemap_map_pages as -map_pages in shmem/tmpfs.
Please cc Hugh on shmem/tmpfs things
Sorry about my fault about the experiments, here is the real one.
Btw, apparently, there are still some questions about the results and
I will sync with Kirill about his test command line.
Below is just some simple experiment numbers from this patch, let me know if
you would like more:
Tested
On Fri, 28 Feb 2014 16:35:16 -0800 Ning Qu qun...@gmail.com wrote:
Sorry about my fault about the experiments, here is the real one.
Btw, apparently, there are still some questions about the results and
I will sync with Kirill about his test command line.
Below is just some simple
Yes, I am using the iozone -i 0 -i 1. Let me try the most simple test
as you mentioned.
Best wishes,
--
Ning Qu
On Fri, Feb 28, 2014 at 5:41 PM, Andrew Morton
a...@linux-foundation.org wrote:
On Fri, 28 Feb 2014 16:35:16 -0800 Ning Qu qun...@gmail.com wrote:
Sorry about my fault about the
Yes, the simple test does verify that the page fault number are
correct with the patch. So my previous results are from those command
lines, which also show some performance improvement with this change
in tmpfs.
sequential access
/usr/bin/time -a ./iozone —B s 8g -i 0 -i 1
random access
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