Re: RFC: doubling IO_BUFSIZE

[Pádraig Brady]

On 05/24/2014 06:32 AM, Jim Meyering wrote:
> It looks like it makes sense to double IO_BUFSIZE once again.
> What do you think?

+1

Significant enough to bump up I think,
and we never saw regressions with this size.

Please amend the date etc. at the top of the comment too.
Here are the results from non x86 worth adding I think:

POWER7 3.55GHz, revision 2.1 IBM,8231-E2B
   1024=1.3 GB/s
   2048=2.5 GB/s
   4096=4.8 GB/s
   8192=9.2 GB/s
  16384=16.8 GB/s
  32768=28.0 GB/s
  65536=41.4 GB/s
 131072=54.8 GB/s
 262144=40.0 GB/s
 524288=34.5 GB/s
1048576=36.5 GB/s

I have access to some NDA architectures and
there was an increase in performance seen there also.

thanks,
Pádraig.