Re: [PATCH 0/4] map multiple blocks in get_block() and mpage_readpages()

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

 



On Wed, 2006-03-01 at 17:52 -0800, Andrew Morton wrote:
> Badari Pulavarty <[email protected]> wrote:
> >
> > I noticed decent improvements (reduced sys time) on JFS, XFS and ext3.
> > (on simple "dd" read tests).
> > 
> >          (rc3.mm1)      (rc3.mm1 + patches)
> > real    0m18.814s       0m18.482s
> > user    0m0.000s        0m0.004s
> > sys     0m3.240s        0m2.912s
> 
> With which filesystem?  XFS and JFS implement a larger-than-b_size
> ->get_block, but ext3 doesn't.  I'd expect ext3 system time to increase a
> bit, if anything?

These numbers are on JFS. With the current ext3 (mainline) - I did
find not-really-noticible increase in sys time (due to code overhead).

I tested on ext3 with Mingming's ext3 getblocks() support in -mm also,
which showed reduction in sys time.

Thanks,
Badari

-
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]
  Powered by Linux