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SubjectRe: [PATCH] concurrent inode allocation for ext2 against 2.5.64
> here is the patch for ext2 concurrent inode allocation. should be applied
> on top of previous concurrent-balloc patch. tested on dual p3 for several
> hours of stress-test + fsck. hope someone test it on big iron ;)

OK ... now you're scaring me. This puppy is accellerating too fast ;-)
I'm sure 196% on SDET is against some rule or other ... ;-)
(16x NUMA-Q off a single disk on node 0)

2.5.64-mjb3 baseline
2.5.64-mjb3-ext2 with concurrent balloc
2.5.64-mjb3-ext2_plus with concurrent balloc + ialloc

dbench32:
2.5.64-mjb3
Throughput 187.637 MB/sec (NB=234.546 MB/sec 1876.37 MBit/sec) 32 procs
2.5.64-mjb3-ext2
Throughput 378.664 MB/sec (NB=473.33 MB/sec 3786.64 MBit/sec) 32 procs
2.5.64-mjb3-ext2-plus
Throughput 514.092 MB/sec (NB=642.615 MB/sec 5140.92 MBit/sec) 32 procs

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-mjb3 100.0% 1.8%
2.5.64-mjb3-ext2 102.0% 1.1%
2.5.64-mjb3-ext2_plus 105.4% 0.7%

SDET 2 (see disclaimer)
Throughput Std. Dev
2.5.64-mjb3 100.0% 3.7%
2.5.64-mjb3-ext2 106.1% 3.1%
2.5.64-mjb3-ext2_plus 105.3% 3.3%

SDET 4 (see disclaimer)
Throughput Std. Dev
2.5.64-mjb3 100.0% 1.5%
2.5.64-mjb3-ext2 101.1% 2.1%
2.5.64-mjb3-ext2_plus 103.7% 1.9%

SDET 8 (see disclaimer)
Throughput Std. Dev
2.5.64-mjb3 100.0% 0.2%
2.5.64-mjb3-ext2 113.3% 0.7%
2.5.64-mjb3-ext2_plus 118.8% 0.2%

SDET 16 (see disclaimer)
Throughput Std. Dev
2.5.64-mjb3 100.0% 1.1%
2.5.64-mjb3-ext2 167.1% 0.8%
2.5.64-mjb3-ext2_plus 187.7% 0.6%

SDET 32 (see disclaimer)
Throughput Std. Dev
2.5.64-mjb3 100.0% 0.9%
2.5.64-mjb3-ext2 170.7% 0.1%
2.5.64-mjb3-ext2_plus 196.3% 0.2%

SDET 64 (see disclaimer)
Throughput Std. Dev
2.5.64-mjb3 100.0% 0.7%
2.5.64-mjb3-ext2 157.2% 0.5%
2.5.64-mjb3-ext2_plus 177.4% 0.4%

SDET 128 (see disclaimer)
Throughput Std. Dev
2.5.64-mjb3 100.0% 0.3%
2.5.64-mjb3-ext2 151.3% 0.8%
2.5.64-mjb3-ext2_plus 161.3% 0.1%

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