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Re: RFC: doubling IO_BUFSIZE
From: |
Pádraig Brady |
Subject: |
Re: RFC: doubling IO_BUFSIZE |
Date: |
Sat, 24 May 2014 09:59:32 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 |
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.