On Thu, 27 Sep 2007, Richard Scobie wrote:
Justin Piszcz wrote:
If you have a good repeatable benchmark you want me to run with it on/off
let me know, no I only used bonnie++/iozone/tiobench/dd but not any
parallelism with those utilities.
Perhaps iozone with 5 threads, NCQ on and off?
Regards,
Richard
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With multiple threads, not too much difference..
NCQ OFF: iozone -l 5
Children see throughput for 5 initial writers = 894857.31 KB/sec
Parent sees throughput for 5 initial writers = 5484.80 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 894857.31 KB/sec
Avg throughput per process = 178971.46 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 rewriters = 1289930.50 KB/sec
Parent sees throughput for 5 rewriters = 12722.45 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1289930.50 KB/sec
Avg throughput per process = 257986.10 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 readers = 1992459.00 KB/sec
Parent sees throughput for 5 readers = 361601.94 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1992459.00 KB/sec
Avg throughput per process = 398491.80 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 re-readers = 2169601.25 KB/sec
Parent sees throughput for 5 re-readers = 545904.86 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 2169601.25 KB/sec
Avg throughput per process = 433920.25 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 reverse readers = 1662389.12 KB/sec
Parent sees throughput for 5 reverse readers = 530530.32 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1662389.12 KB/sec
Avg throughput per process = 332477.83 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 stride readers = 1689860.00 KB/sec
Parent sees throughput for 5 stride readers = 559560.28 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1689860.00 KB/sec
Avg throughput per process = 337972.00 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 random readers = 1640796.38 KB/sec
Parent sees throughput for 5 random readers = 384384.88 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1640796.38 KB/sec
Avg throughput per process = 328159.28 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 mixed workload = 1723771.00 KB/sec
Parent sees throughput for 5 mixed workload = 2954.09 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1723771.00 KB/sec
Avg throughput per process = 344754.20 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 random writers = 1312798.75 KB/sec
Parent sees throughput for 5 random writers = 3750.95 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1312798.75 KB/sec
Avg throughput per process = 262559.75 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 pwrite writers = 915847.19 KB/sec
Parent sees throughput for 5 pwrite writers = 2395.21 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 915847.19 KB/sec
Avg throughput per process = 183169.44 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 pread readers = 1620980.12 KB/sec
Parent sees throughput for 5 pread readers = 272911.00 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1620980.12 KB/sec
Avg throughput per process = 324196.03 KB/sec
Min xfer = 0.00 KB
NCQ ON: iozone -l 5
Children see throughput for 5 initial writers = 867738.31 KB/sec
Parent sees throughput for 5 initial writers = 4722.90 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 867738.31 KB/sec
Avg throughput per process = 173547.66 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 rewriters = 1326585.25 KB/sec
Parent sees throughput for 5 rewriters = 11928.29 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1326585.25 KB/sec
Avg throughput per process = 265317.05 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 readers = 1895721.12 KB/sec
Parent sees throughput for 5 readers = 334665.53 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1895721.12 KB/sec
Avg throughput per process = 379144.22 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 re-readers = 2091421.75 KB/sec
Parent sees throughput for 5 re-readers = 310473.32 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 2091421.75 KB/sec
Avg throughput per process = 418284.35 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 reverse readers = 1630828.12 KB/sec
Parent sees throughput for 5 reverse readers = 260181.03 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1630828.12 KB/sec
Avg throughput per process = 326165.62 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 stride readers = 1647088.75 KB/sec
Parent sees throughput for 5 stride readers = 311644.78 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1647088.75 KB/sec
Avg throughput per process = 329417.75 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 random readers = 1736314.50 KB/sec
Parent sees throughput for 5 random readers = 547017.30 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1736314.50 KB/sec
Avg throughput per process = 347262.90 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 mixed workload = 1599251.25 KB/sec
Parent sees throughput for 5 mixed workload = 11172.20 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1599251.25 KB/sec
Avg throughput per process = 319850.25 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 random writers = 1333173.62 KB/sec
Parent sees throughput for 5 random writers = 3302.71 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1333173.62 KB/sec
Avg throughput per process = 266634.72 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 pwrite writers = 1117430.12 KB/sec
Parent sees throughput for 5 pwrite writers = 10313.44 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1117430.12 KB/sec
Avg throughput per process = 223486.02 KB/sec
Min xfer = 0.00 KB
Children see throughput for 5 pread readers = 1610042.38 KB/sec
Parent sees throughput for 5 pread readers = 269047.35 KB/sec
Min throughput per process = 0.00 KB/sec
Max throughput per process = 1610042.38 KB/sec
Avg throughput per process = 322008.47 KB/sec
Min xfer = 0.00 KB
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