Messages in this thread | | | Date | Tue, 31 Oct 2006 15:54:46 -0500 | From | "Holden Karau" <> | Subject | Re: [PATCH 1/1] fat: improve sync performance by grouping writes revised |
| |
Keep in mind these results are with a slow external drive, but yah fat32 sync performance is still really bad.
This patch is just meant to make fat32 sync performance better, not necessarily make it usable for everyone [one step at a time and all that]. FAT32 sync is quite slow (see http://readlist.com/lists/vger.kernel.org/linux-kernel/22/111761.html ), so if you want fast performance [or have drives with limited write cycles] async is almost definitely the way to go.
I have a patch [not this one] which adds a module param ("fast") which syncs the FAT tables after 30 seconds of no write activity, but I don't think the majority of people are interested in it.
On 10/31/06, OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> wrote: > "Holden Karau" <holden@pigscanfly.ca> writes: > > > The performance increase is pretty small. Using an old external dirve > > I had lying around I got: > > diff -y stock/10k modified/10k > > 10240+0 records in | 1024+0 > > records in > > 10240+0 records out | 1024+0 > > records out > > 5242880 bytes transferred in 18.280922 seconds (286795 bytes/ | 524288 > > bytes transferred in 1.824985 seconds (287283 bytes/se > > 1024 records out 1.824985 seconds. Is there decrease case? I assume > the result is same. So, we would need different approach. > > > diff -y stock/1k modified/1k > > 1024+0 records in 1024+0 > > records in > > 1024+0 records out 1024+0 > > records out > > 524288 bytes transferred in 1.777250 seconds (295000 bytes/se | 524288 > > bytes transferred in 1.764748 seconds (297089 bytes/se > -- > OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> >
-- Cell: 613-276-1645 - 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/
| |