Re: [PATCH] concurrent block allocation for ext3

From: Martin J. Bligh (mbligh@aracnet.com)
Date: Fri Mar 14 2003 - 16:22:28 EST


SDET on my machine (16x NUMA-Q) has fallen in love with your patch,
and has decided to elope with it to a small desert island. This is
despite it's one disk hung off node 0, and the IO througput of a
slightly damp piece of cotton thread. Apologies for the loss of your
patch as it gets whisked away ;-)

M.

PS. Oh, I had this bit, per akpm-instructions: For best results, add ____cacheline_aligned_in_smp to struct ext2_bg_info

PPS. I'll try to run some more focused tests with aim7 over the weekend.
As if we needed it ...

-------------------------

DISCLAIMER: SPEC(tm) and the benchmark name SDET(tm) are registered
trademarks of the Standard Performance Evaluation Corporation. This
benchmarking was performed for research purposes only, and the run results
are non-compliant and not-comparable with any published results.

Results are shown as percentages of the first set displayed

SDET 1 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 1.8%
         2.5.64-mjb3-ext2 102.0% 1.1%

SDET 2 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 3.7%
         2.5.64-mjb3-ext2 106.1% 3.1%

SDET 4 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 1.5%
         2.5.64-mjb3-ext2 101.1% 2.1%

SDET 8 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 0.2%
         2.5.64-mjb3-ext2 113.3% 0.7%

SDET 16 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 1.1%
         2.5.64-mjb3-ext2 167.1% 0.8%

SDET 32 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 0.9%
         2.5.64-mjb3-ext2 170.7% 0.1%

SDET 64 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 0.7%
         2.5.64-mjb3-ext2 157.2% 0.5%

SDET 128 (see disclaimer)
                           Throughput Std. Dev
          2.5.64-bk3-mjb3 100.0% 0.3%
         2.5.64-mjb3-ext2 151.3% 0.8%

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