[[PageOutline]]
 = GPFS Performance Report (Uses gpfsperf Command) =

rock, rock@nchc.org.tw

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 == Machine Informance ==
||Node ||8 nodes (1 server , 7 client provide disks)||

||CPU ||Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz (each node)||

||Memory ||2GB DDR2 667 (each node)||

||Disk  ||320G+160G (each node), All nodes:  (320G+ 160G) * 7 = 3.36T||

||NIC ||Intel Corporation 82566DM Gigabit Network Connection||

||Switch ||D-link 24 port GE switch||

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== 1. 8 Nodes, Replicate, Adjust Parameters ==

 * Context: Create 16G data (sequence)
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G -n 16g -r 1m 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 1 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 54649.55 Kbytes/sec, thread utilization 1.000 
}}}

 * Context: Read 16G data (sequence)
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G -n 16g -r 1m 
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 1 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
    Data rate was 83583.30 Kbytes/sec, thread utilization 1.000 
}}}

 * Context: Write 16G data (sequence)
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G -n 16g -r 1m 
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 1 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 50898.76 Kbytes/sec, thread utilization 1.000
}}}

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== 2. 8 Nodes, No Replicate, Adjust Parameters ==

 * Context: Create 16G data (sequence)
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_2 -n 16g -r 1m 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_2 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 1 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 108330.24 Kbytes/sec, thread utilization 1.000 
}}}

 * Context: Read 16G data (sequence)
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_2 -n 16g -r 1m 
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_2 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 1 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
    Data rate was 82420.96 Kbytes/sec, thread utilization 1.000 
}}}

 * Context: Write 16G data (sequence)
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_2 -n 16g -r 1m 
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_2 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 1 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 108820.45 Kbytes/sec, thread utilization 1.000 
}}}

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 == 3. Multi-thread ==
 === 3.1 Create Operation ===

 * Context: Create 16G data, 1 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 1 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 1 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 50800.95 Kbytes/sec, thread utilization 1.000
}}}

 * Context: Create 16G data, 2 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 2 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 2 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 50297.13 Kbytes/sec, thread utilization 0.999 
}}}

 * Context:  Create 16G data, 4 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 4 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 4 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 50848.45 Kbytes/sec, thread utilization 0.998
}}}

 * Context:  Create 16G data, 8 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 8 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 8 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 50469.88 Kbytes/sec, thread utilization 0.963 
}}}

 * Context:  Create 16G data, 16 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 16 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 16 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 52578.33 Kbytes/sec, thread utilization 0.919 
}}}

 * Context:  Create 16G data, 32 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 32 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 32 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 53107.28 Kbytes/sec, thread utilization 0.966
}}}

 * Context:  Create 16G data, 64 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 64 
./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 64 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
  no fsync at end of test 
    Data rate was 53019.53 Kbytes/sec, thread utilization 0.978
}}}

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 === 3.2 Read Operation ===
 * Context:  Read 16G data, 1 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 1
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 1
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
    Data rate was 81685.18 Kbytes/sec, thread utilization 1.000
}}}

 * Context:  Read 16G data, 2 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 2
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 2
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
    Data rate was 90844.61 Kbytes/sec, thread utilization 0.999
}}}

 * Context:  Read 16G data, 4 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 4
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 4
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
    Data rate was 89538.89 Kbytes/sec, thread utilization 0.997
}}}

 * Context:  Read 16G data, 8 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 8
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 8
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
    Data rate was 87044.97 Kbytes/sec, thread utilization 0.994
}}}

 * Context:  Read 16G data, 16 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 16
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 16
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
    Data rate was 94899.75 Kbytes/sec, thread utilization 0.990
}}}

 * Context:  Read 16G data, 32 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 32 
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 32 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
    Data rate was 90657.18 Kbytes/sec, thread utilization 0.983 
}}}

 * Context:  Read 16G data, 64 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 64 
./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 
  recSize 1M nBytes 16G fileSize 16G 
  nProcesses 1 nThreadsPerProcess 64 
  file cache flushed before test 
  not using data shipping 
  not using direct I/O 
  offsets accessed will cycle through the same file segment 
  not using shared memory buffer 
  not releasing byte-range token after open 
    Data rate was 89751.67 Kbytes/sec, thread utilization 0.983
}}}

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=== 3.3 Write Operation ===
 * Context:  Write 16G data, 1 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 1
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 1
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
  no fsync at end of test
    Data rate was 50819.17 Kbytes/sec, thread utilization 1.000
}}}

 * Context:  Write 16G data, 2 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 2
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 2
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
  no fsync at end of test
    Data rate was 50588.81 Kbytes/sec, thread utilization 1.000
}}}

 * Context:  Write 16G data, 4 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 4
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 4
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
  no fsync at end of test
    Data rate was 50694.87 Kbytes/sec, thread utilization 0.999
}}}

 * Context:  Write 16G data, 8 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 8
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 8
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
  no fsync at end of test
    Data rate was 51648.90 Kbytes/sec, thread utilization 0.985
}}}

 * Context:  Write 16G data, 16 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 16
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 16
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
  no fsync at end of test
    Data rate was 53019.51 Kbytes/sec, thread utilization 0.924
}}}

 * Context:  Write 16G data, 32 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 32
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 32
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
  no fsync at end of test
    Data rate was 53003.69 Kbytes/sec, thread utilization 0.966
}}}

 * Context:  Write 16G data, 64 thread
{{{
gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 64
./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3
  recSize 1M nBytes 16G fileSize 16G
  nProcesses 1 nThreadsPerProcess 64
  file cache flushed before test
  not using data shipping
  not using direct I/O
  offsets accessed will cycle through the same file segment
  not using shared memory buffer
  not releasing byte-range token after open
  no fsync at end of test
    Data rate was 53590.98 Kbytes/sec, thread utilization 0.971
}}}

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=== 4. Compare ===
 * All kind Operation (sequence)

||            ||Replicate & Adjust Parameters  ||No Replicate & Adjust Parameters||
||Create||54649.55 KB/s                                 ||108330.24 KB/s||
||Read    ||83583.30 KB/s                                 ||82420.96 KB/s||
||Write  ||50898.76 KB/s                                 ||108820.45 KB/s||

 * Multi-thread (sequence) (Replicate & Adjust Parameters)
||             || 1                      || 2                      || 4                          || 8                            || 16                      || 32                      || 64                    ||
||Create||50800.95 KB/s ||50297.13 KB/s ||50848.45 KB/s    ||50469.88 KB/s       || 52578.33 KB/s ||53107.28 KB/s   || 53019.53 KB/s|| 
||Read    ||81685.18 KB/s  ||90844.61 KB/s ||89538.89 KB/s || 87044.97 KB/s || 94899.75 KB/s || 90657.18 KB/s || 89751.67 KB/s || 
||Write||50819.17 KB/s || 50588.81 KB/s || 50694.87 KB/s || 51648.90 KB/s || 53019.51 KB/s || 53003.69 KB/s || 53590.98 KB/s || 

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