I decided to try btrfs on F13 (2.6.33.6-147.2.4.fc13.x86_64 kernel) with the
following fs_mark command and a 1.5 TB Seagate S-ATA disk:
# fs_mark -s 0 -S 0 -D 1000 -n 1000000 -L 1000 -d /test/ -l btrfs_log.txt
btrfs starts off at a fantastic rate - roughly 3-4 times the speed of ext4:
FSUse% Count Size Files/sec App Overhead
0 1000000 0 20815.9 6257344
0 2000000 0 17531.2 6310061
0 3000000 0 10656.4 6473972
0 4000000 0 17933.6 6291377
0 5000000 0 6687.9 6708750
0 6000000 0 6494.3 6792701
0 7000000 0 18211.1 6266870
0 8000000 0 18518.4 6231522
Then it chugs along, but hits relatively long periods of slowness:
20 231000000 0 16991.8 6216216
20 232000000 0 17524.1 6290540
20 233000000 0 17088.5 6456494
20 234000000 0 1259.1 10185066
20 235000000 0 1419.0 8144068
20 236000000 0 1670.9 12154381
20 237000000 0 1863.6 8582337
20 238000000 0 929.1 9714860
21 239000000 0 4100.7 7385278
21 240000000 0 3486.6 8773568
21 241000000 0 2224.7 7320514
21 242000000 0 3761.8 7166617
21 243000000 0 3197.0 6918920
21 244000000 0 1293.1 8486926
21 245000000 0 3189.7 7396151
21 246000000 0 3164.7 7103912
21 247000000 0 4028.8 6770544
21 248000000 0 3698.7 7133084
21 249000000 0 2247.9 7421000
22 250000000 0 1579.3 9833236
I will fill this and get some plots, etc to do relative performance & then
wanted to try the current RC kernel just to refresh.
Ric
(Whole log file appended)
# fs_mark -s 0 -S 0 -D 1000 -n 1000000 -L 1000 -d /test/ -l
btrfs_log.txt
# Version 3.3, 1 thread(s) starting at Sun Aug 15 22:42:42 2010
# Sync method: NO SYNC: Test does not issue sync() or fsync() calls.
# Directories: Time based hash between directories across 1000
subdirectories with 180 seconds per subdirectory.
# File names: 40 bytes long, (16 initial bytes of time stamp with 24
random bytes at end of name)
# Files info: size 0 bytes, written with an IO size of 16384 bytes per
write
# App overhead is time in microseconds spent in the test not doing file
writing related system calls.
#
FSUse% Count Size Files/sec App Overhead
0 1000000 0 20815.9 6257344
0 2000000 0 17531.2 6310061
0 3000000 0 10656.4 6473972
0 4000000 0 17933.6 6291377
0 5000000 0 6687.9 6708750
0 6000000 0 6494.3 6792701
0 7000000 0 18211.1 6266870
0 8000000 0 18518.4 6231522
0 9000000 0 18291.6 6242354
0 10000000 0 18797.3 6331131
1 11000000 0 17585.3 6323020
1 12000000 0 18160.9 6293072
1 13000000 0 17452.3 7033092
1 14000000 0 4050.4 7114239
1 15000000 0 3829.6 7220560
1 16000000 0 4115.2 7118247
1 17000000 0 12020.7 6364758
1 18000000 0 16576.1 6295093
1 19000000 0 16852.4 6293392
1 20000000 0 15563.5 6603340
1 21000000 0 13275.7 6546154
1 22000000 0 17274.9 6244028
2 23000000 0 17825.4 6328352
2 24000000 0 17159.0 6291665
2 25000000 0 16936.0 6280647
2 26000000 0 16816.1 6307828
2 27000000 0 16358.0 6374361
2 28000000 0 16899.2 6305802
2 29000000 0 18116.2 6281832
2 30000000 0 16591.6 6218579
2 31000000 0 17737.5 6234369
2 32000000 0 17487.4 6674911
2 33000000 0 15949.1 6289806
3 34000000 0 18070.0 6294203
3 35000000 0 17549.3 7035713
3 36000000 0 17365.5 6302612
3 37000000 0 17120.4 6309273
3 38000000 0 16950.7 6291340
3 39000000 0 16162.7 6350948
3 40000000 0 18372.7 6275539
3 41000000 0 16830.7 6268292
3 42000000 0 15992.6 6373618
3 43000000 0 18168.9 6301528
3 44000000 0 18061.7 6264057
3 45000000 0 16048.7 6346317
4 46000000 0 17334.9 6321253
4 47000000 0 3448.3 6838377
4 48000000 0 3516.7 8038983
4 49000000 0 3867.1 7227485
4 50000000 0 2888.4 7243821
4 51000000 0 2394.8 7216079
4 52000000 0 2498.6 6843414
4 53000000 0 2819.5 7060184
4 54000000 0 17219.0 6259943
4 55000000 0 15260.4 6367936
4 56000000 0 17522.6 6266963
5 57000000 0 17278.3 6306790
5 58000000 0 17827.9 6275829
5 59000000 0 4285.3 7437493
5 60000000 0 16448.4 6289245
5 61000000 0 16113.5 6325499
5 62000000 0 18155.8 6239094
5 63000000 0 4179.2 6651598
5 64000000 0 17690.2 6284524
5 65000000 0 17225.0 7155034
5 66000000 0 17310.0 6309914
5 67000000 0 17925.5 6297320
6 68000000 0 16592.5 6323214
6 69000000 0 17267.0 6282377
6 70000000 0 17570.8 6300443
6 71000000 0 17495.1 6309743
6 72000000 0 17521.6 6315327
6 73000000 0 17210.1 6620004
6 74000000 0 17117.6 6308142
6 75000000 0 17990.8 6269538
6 76000000 0 17220.2 6268183
6 77000000 0 16806.9 6299533
6 78000000 0 17071.6 6283797
6 79000000 0 16890.7 6660269
7 80000000 0 16579.1 6287810
7 81000000 0 17684.8 6286511
7 82000000 0 17263.7 6256444
7 83000000 0 15841.5 6315280
7 84000000 0 18360.0 6250738
7 85000000 0 17432.3 6307927
7 86000000 0 17294.0 6283318
7 87000000 0 17683.4 6281639
7 88000000 0 17109.2 6284513
7 89000000 0 17802.2 6365485
7 90000000 0 17277.2 6257247
8 91000000 0 16790.4 6354296
8 92000000 0 17396.6 6299773
8 93000000 0 16301.2 6326910
8 94000000 0 15742.4 6342880
8 95000000 0 17721.4 6245928
8 96000000 0 16865.1 6560790
8 97000000 0 16640.5 6282039
8 98000000 0 4287.5 6489531
8 99000000 0 16553.8 6301800
8 100000000 0 16489.6 6314946
8 101000000 0 18035.2 6280337
9 102000000 0 16251.7 6356805
9 103000000 0 16520.5 6327830
9 104000000 0 16970.1 6330138
9 105000000 0 16501.6 6343194
9 106000000 0 16790.0 6329598
9 107000000 0 17150.5 6225618
9 108000000 0 17503.5 6230408
9 109000000 0 16969.3 6322322
9 110000000 0 17535.4 6224087
9 111000000 0 2431.8 7065238
9 112000000 0 4203.4 6464506
9 113000000 0 15603.5 6334619
10 114000000 0 17903.2 6298115
10 115000000 0 16947.8 6283959
10 116000000 0 18118.8 6223771
10 117000000 0 1250.3 11497573
10 118000000 0 2168.3 8677721
10 119000000 0 2921.5 6998525
10 120000000 0 3902.7 7088629
10 121000000 0 3142.4 7104538
10 122000000 0 2621.8 7479713
10 123000000 0 3495.4 6812262
10 124000000 0 1280.9 9670585
11 125000000 0 4146.8 7053423
11 126000000 0 3079.9 7218964
11 127000000 0 2314.8 7201122
11 128000000 0 3771.3 7342388
11 129000000 0 2868.1 7491468
11 130000000 0 3842.0 7056393
11 131000000 0 2290.7 7607168
11 132000000 0 3135.0 7477374
11 133000000 0 5423.2 6864242
11 134000000 0 11873.0 6531883
11 135000000 0 15301.9 6541432
11 136000000 0 17808.3 6329129
12 137000000 0 3988.5 6745565
12 138000000 0 5161.1 6541221
12 139000000 0 16439.4 6287890
12 140000000 0 16342.1 6323441
12 141000000 0 17439.4 6330809
12 142000000 0 16882.0 6316980
12 143000000 0 16365.0 6297142
12 144000000 0 17550.7 6305619
12 145000000 0 17242.1 6352472
12 146000000 0 16119.6 6305376
12 147000000 0 17830.1 6284454
13 148000000 0 17229.8 6264212
13 149000000 0 16436.5 6333343
13 150000000 0 16922.7 6333859
13 151000000 0 3278.8 6877742
13 152000000 0 16787.3 6319630
13 153000000 0 16442.3 6295449
13 154000000 0 4177.2 6425930
13 155000000 0 17959.6 6305964
13 156000000 0 17138.8 6282213
13 157000000 0 16580.9 6294517
13 158000000 0 4248.8 6447632
14 159000000 0 18054.5 6275990
14 160000000 0 16402.8 6298766
14 161000000 0 16938.3 6255453
14 162000000 0 16445.8 6279203
14 163000000 0 4183.4 6504925
14 164000000 0 16150.3 6335906
14 165000000 0 17317.9 6326524
14 166000000 0 16635.8 6334818
14 167000000 0 16870.7 6343965
14 168000000 0 17101.9 6278377
14 169000000 0 4131.7 6447477
14 170000000 0 2790.1 6957939
15 171000000 0 4258.3 6547637
15 172000000 0 4144.9 6517516
15 173000000 0 16753.4 6310725
15 174000000 0 16321.8 6355113
15 175000000 0 1530.6 7590414
15 176000000 0 5685.5 6650047
15 177000000 0 16874.9 6295606
15 178000000 0 17090.0 6302893
15 179000000 0 16433.3 6297855
15 180000000 0 16141.8 6253448
15 181000000 0 16165.8 6309024
16 182000000 0 17838.1 6244481
16 183000000 0 16783.3 6256981
16 184000000 0 16437.4 6325421
16 185000000 0 17549.6 6279683
16 186000000 0 16268.9 6303004
16 187000000 0 16265.2 6294318
16 188000000 0 16747.9 6299414
16 189000000 0 16479.7 6309647
16 190000000 0 16483.0 6342135
16 191000000 0 16504.6 6305356
16 192000000 0 17565.2 7524570
17 193000000 0 16896.9 6330856
17 194000000 0 17781.8 6288532
17 195000000 0 16574.7 6288047
17 196000000 0 16541.5 6330765
17 197000000 0 17394.4 6264580
17 198000000 0 16538.1 6261857
17 199000000 0 16501.2 6291159
17 200000000 0 16685.6 6259176
17 201000000 0 17689.4 7061755
17 202000000 0 17507.0 6304072
17 203000000 0 18049.2 6304002
17 204000000 0 16178.9 6300915
18 205000000 0 9445.2 6416147
18 206000000 0 4183.0 6501230
18 207000000 0 17040.1 6280866
18 208000000 0 17637.4 6288235
18 209000000 0 5166.5 6693375
18 210000000 0 16564.9 6266877
18 211000000 0 16242.0 6280384
18 212000000 0 2387.9 6597650
18 213000000 0 15703.4 6325825
18 214000000 0 17280.9 6278357
18 215000000 0 16712.3 6374671
19 216000000 0 15901.2 6356488
19 217000000 0 17927.5 6272836
19 218000000 0 4185.8 6621414
19 219000000 0 7264.8 6474084
19 220000000 0 4190.6 6501562
19 221000000 0 17371.4 6284265
19 222000000 0 16956.5 6284733
19 223000000 0 16041.5 6273139
19 224000000 0 17289.1 6291473
19 225000000 0 18191.0 6305787
19 226000000 0 16150.2 6311278
20 227000000 0 17520.5 6290320
20 228000000 0 16998.6 6223947
20 229000000 0 16410.2 6252458
20 230000000 0 17867.6 6275663
20 231000000 0 16991.8 6216216
20 232000000 0 17524.1 6290540
20 233000000 0 17088.5 6456494
20 234000000 0 1259.1 10185066
20 235000000 0 1419.0 8144068
20 236000000 0 1670.9 12154381
20 237000000 0 1863.6 8582337
20 238000000 0 929.1 9714860
21 239000000 0 4100.7 7385278
21 240000000 0 3486.6 8773568
21 241000000 0 2224.7 7320514
21 242000000 0 3761.8 7166617
21 243000000 0 3197.0 6918920
21 244000000 0 1293.1 8486926
21 245000000 0 3189.7 7396151
21 246000000 0 3164.7 7103912
21 247000000 0 4028.8 6770544
21 248000000 0 3698.7 7133084
21 249000000 0 2247.9 7421000
22 250000000 0 1579.3 9833236
