[Gluster-users] Slow read performance
Ling Ho
ling at slac.stanford.edu
Fri Mar 1 00:53:48 UTC 2013
Tom,
What type of disks do you have? If they are raid 5 or 6, have you try
setting the read-ahead size to 8192 or 16384 (blockdev --setra 8192
/dev/<sd?> ?
...
ling
On 02/28/2013 04:23 PM, Thomas Wakefield wrote:
> Did anyone else have any ideas on performance tuning for reads?
>
> On Feb 27, 2013, at 9:29 PM, Thomas Wakefield <twake at iges.org
> <mailto:twake at iges.org>> wrote:
>
>> Bryan-
>>
>> Yes I can write at 700-800MBytes/sec, but i can only read at *70-80
>> MBytes/sec*. I would be very happy if I could get it to read at the
>> same speed it can write at. And the 70-80 is sequential, not random
>> for reads, same exact test commands on the disk server are in the
>> 2+GB/s range, so I know the disk server can do it.
>>
>> -Tom
>>
>>
>> On Feb 27, 2013, at 7:41 PM, Bryan Whitehead <driver at megahappy.net
>> <mailto:driver at megahappy.net>> wrote:
>>
>>> Are your figures 700-800M*Byte*/sec? Because that is probably as
>>> fast as your 10G nic cards are able to do. You can test that by
>>> trying to push a large amount of data over nc or ftp.
>>>
>>> Might want to try Infiniband. 40G cards are pretty routine.
>>>
>>>
>>> On Wed, Feb 27, 2013 at 3:45 PM, Thomas Wakefield <twake at iges.org
>>> <mailto:twake at iges.org>> wrote:
>>>
>>> I also get the same performance running iozone for large file
>>> sizes, iozone -u 1 -r 512k -s 2G -I -F.
>>>
>>> Large file IO is what I need the system to do. I am just
>>> shocked at the huge difference between local IO and gluster
>>> client IO. I know there should be some difference, but 10x is
>>> unacceptable.
>>>
>>> -Tom
>>>
>>>
>>>
>>> On Feb 27, 2013, at 5:31 PM, Bryan Whitehead
>>> <driver at megahappy.net <mailto:driver at megahappy.net>> wrote:
>>>
>>>> Every time you open/close a file or a directory you will have
>>>> to wait for locks which take time. This is totally expected.
>>>>
>>>> Why don't you share what you want to do? iozone benchmarks look
>>>> like crap but serving qcow2 files to qemu works fantastic for
>>>> me. What are you doing? Make a benchmark that does that. If you
>>>> are going to have many files with a wide variety of sizes
>>>> glusterfs/fuse might not be what you are looking for.
>>>>
>>>>
>>>> On Wed, Feb 27, 2013 at 12:56 PM, Thomas Wakefield
>>>> <twake at cola.iges.org <mailto:twake at cola.iges.org>> wrote:
>>>>
>>>> I have tested everything, small and large files. I have
>>>> used file sizes ranging from 128k up to multiple GB files.
>>>> All the reads are bad.
>>>>
>>>>
>>>>
>>>> Here is a fairly exhaustive iozone auto test:
>>>>
>>>>
>>>> random random bkwd record stride
>>>> KB reclen write rewrite read reread
>>>> read write read rewrite read fwrite frewrite
>>>> fread freread
>>>> 64 4 40222 63492 26868 30060
>>>> 1620 71037 1572 70570 31294 77096 72475
>>>> 14736 13928
>>>> 64 8 99207 116366 13591 13513
>>>> 3214 97690 3155 109978 28920 152018 158480
>>>> 18936 17625
>>>> 64 16 230257 253766 25156 28713
>>>> 10867 223732 8873 244297 54796 303383 312204
>>>> 15062 13545
>>>> 64 32 255943 234481 5735102 7100397
>>>> 11897 318502 13681 347801 24214 695778 528618
>>>> 25838 28094
>>>> 64 64 214096 681644 6421025 7100397
>>>> 27453 292156 28117 621657 27338 376062 512471
>>>> 28569 32534
>>>> 128 4 74329 75468 26428 41089
>>>> 1131 72857 1118 66976 1597 73778 78343
>>>> 13351 13026
>>>> 128 8 100862 135170 24966 16734
>>>> 2617 118966 2560 120406 39156 125121 146613
>>>> 16177 16180
>>>> 128 16 115114 253983 28212 17854
>>>> 5307 246180 5431 229843 47335 255920 271173
>>>> 27256 24445
>>>> 128 32 256042 391360 39848 64258
>>>> 11329 290230 9905 429563 38176 490380 463696
>>>> 20917 19219
>>>> 128 64 248573 592699 4557257 6812590
>>>> 19583 452366 29263 603357 42967 814915 692017
>>>> 76327 37604
>>>> 128 128 921183 526444 5603747 5379161
>>>> 45614 390222 65441 826202 41384 662962 1040839
>>>> 78526 39023
>>>> 256 4 76212 77337 40295 32125
>>>> 1289 71866 1261 64645 1436 57309 53048
>>>> 23073 29550
>>>> 256 8 126922 141976 26237 25130
>>>> 2566 128058 2565 138981 2985 125060 133603
>>>> 22840 24955
>>>> 256 16 242883 263636 41850 24371
>>>> 4902 250009 5290 248792 89353 243821 247303
>>>> 26965 26199
>>>> 256 32 409074 439732 40101 39335
>>>> 11953 436870 11209 430218 83743 409542 479390
>>>> 30821 27750
>>>> 256 64 259935 571502 64840 71847
>>>> 22537 617161 23383 392047 91852 672010 802614
>>>> 41673 53111
>>>> 256 128 847597 812329 185517 83198
>>>> 49383 708831 44668 794889 74267 1180188 1662639
>>>> 54303 41018
>>>> 256 256 481324 709299 5217259 5320671
>>>> 44668 719277 40954 808050 41302 790209 771473
>>>> 62224 35754
>>>> 512 4 77667 75226 35102 29696
>>>> 1337 66262 1451 67680 1413 69265 69142
>>>> 42084 27897
>>>> 512 8 134311 144341 30144 24646
>>>> 2102 134143 2209 134699 2296 108110 128616
>>>> 25104 29123
>>>> 512 16 200085 248787 30235 25697
>>>> 4196 247240 4179 256116 4768 250003 226436
>>>> 32351 28455
>>>> 512 32 330341 439805 26440 39284
>>>> 8744 457611 8006 424168 125953 425935 448813
>>>> 27660 26951
>>>> 512 64 483906 733729 48747 41121
>>>> 16032 555938 17424 587256 187343 366977 735740
>>>> 41700 41548
>>>> 512 128 836636 907717 69359 94921
>>>> 42443 761031 36828 964378 123165 651383 695697
>>>> 58368 44459
>>>> 512 256 520879 860437 145534 135523
>>>> 40267 847532 31585 663252 69696 1270846 1492545
>>>> 48822 48092
>>>> 512 512 782951 973118 3099691 2942541
>>>> 42328 871966 46218 911184 49791 953248 1036527
>>>> 52723 48347
>>>> 1024 4 76218 69362 36431 28711
>>>> 1137 66171 1174 68938 1125 70566 70845
>>>> 34942 28914
>>>> 1024 8 126045 140524 37836 15664
>>>> 2698 126000 2557 125566 2567 110858 127255
>>>> 26764 27945
>>>> 1024 16 243398 261429 40238 23263
>>>> 3987 246400 3882 260746 4093 236652 236874
>>>> 31429 25076
>>>> 1024 32 383109 422076 41731 41605
>>>> 8277 473441 7775 415261 8588 394765 407306
>>>> 40089 28537
>>>> 1024 64 590145 619156 39623 53267
>>>> 15051 722717 14624 753000 257294 597784 620946
>>>> 38619 44073
>>>> 1024 128 1077836 1124099 56192 64916
>>>> 36851 1102176 37198 1082454 281548 829175 792604
>>>> 47975 51913
>>>> 1024 256 941918 1074331 72783 81450
>>>> 26778 1099636 32395 1060013 183218 1024121 995171
>>>> 44371 45448
>>>> 1024 512 697483 1130312 100324 114682
>>>> 48215 1041758 41480 1058967 90156 994020 1563622
>>>> 56328 46370
>>>> 1024 1024 931702 1087111 4609294 4199201
>>>> 44191 949834 45594 970656 56674 933525 1075676
>>>> 44876 46115
>>>> 2048 4 71438 67066 58319 38913
>>>> 1147 44147 1043 42916 967 66416 67205
>>>> 45953 96750
>>>> 2048 8 141926 134567 61101 55445
>>>> 2596 77528 2564 80402 4258 124211 120747
>>>> 53888 100337
>>>> 2048 16 254344 255585 71550 74500
>>>> 5410 139365 5201 141484 5171 205521 213113
>>>> 67048 57304
>>>> 2048 32 397833 411261 56676 80027
>>>> 10440 260034 10126 230238 10814 391665 383379
>>>> 79333 60877
>>>> 2048 64 595167 687205 64262 87327
>>>> 20772 456430 19960 477064 23190 540220 563096
>>>> 86812 92565
>>>> 2048 128 833585 933403 121926 118621
>>>> 37700 690020 37575 733254 567449 712337 734006
>>>> 92011 104934
>>>> 2048 256 799003 949499 143688 125659
>>>> 40871 892757 37977 880494 458281 836263 901375
>>>> 131332 110237
>>>> 2048 512 979936 1040724 120896 138013
>>>> 54381 859783 48721 780491 279203 1068824 1087085
>>>> 97886 98078
>>>> 2048 1024 901754 987938 53352 53043
>>>> 72727 1054522 68269 992275 181253 1309480 1524983
>>>> 121600 95585
>>>> 2048 2048 831890 1021540 4257067 3302797
>>>> 75672 984203 80181 826209 94278 966920 1027159
>>>> 111832 105921
>>>> 4096 4 66195 67316 62171 74785
>>>> 1328 28963 1329 26397 1223 71470 69317
>>>> 55903 84915
>>>> 4096 8 122221 120057 90537 60958
>>>> 2598 47312 2468 59783 2640 128674 127872
>>>> 41285 40422
>>>> 4096 16 238321 239251 29336 32121
>>>> 4153 89262 3986 96930 4608 229970 237108
>>>> 55039 56983
>>>> 4096 32 417110 421356 30974 50000
>>>> 8382 156676 7886 153841 7900 359585 367288
>>>> 26611 25952
>>>> 4096 64 648008 668066 32193 29389
>>>> 14830 273265 14822 282211 19653 581898 620798
>>>> 51281 50218
>>>> 4096 128 779422 848564 55594 60253
>>>> 37108 451296 35908 491361 37567 738163 728059
>>>> 67681 66440
>>>> 4096 256 865623 886986 71368 63947
>>>> 44255 645961 42689 719491 736707 819696 837641
>>>> 57059 60347
>>>> 4096 512 852099 889650 68870 73891
>>>> 31185 845224 30259 830153 392334 910442 961983
>>>> 60083 55558
>>>> 4096 1024 710357 867810 29377 29522
>>>> 49954 846640 43665 926298 213677 986226 1115445
>>>> 55130 59205
>>>> 4096 2048 826479 908420 43191 42075
>>>> 59684 904022 58601 855664 115105 1418322 1524415
>>>> 60548 66066
>>>> 4096 4096 793351 855111 3232454 3673419
>>>> 66018 861413 48833 847852 45914 852268 842075
>>>> 42980 48374
>>>> 8192 4 67340 69421 42198 31740
>>>> 994 23251 1166 16813 837 73827 73126
>>>> 25169 29610
>>>> 8192 8 137150 125622 29131 36439
>>>> 2051 44342 1988 48930 2315 134183 135367
>>>> 31080 33573
>>>> 8192 16 237366 220826 24810 26584
>>>> 3576 88004 3769 78717 4289 233751 235355
>>>> 23302 28742
>>>> 8192 32 457447 454404 31594 27750
>>>> 8141 142022 7846 143984 9322 353147 396188
>>>> 34203 33265
>>>> 8192 64 670645 655259 28630 23255
>>>> 16669 237476 16965 244968 15607 590365 575320
>>>> 49998 43305
>>>> 8192 128 658676 760982 44197 47802
>>>> 28693 379523 26614 378328 27184 720997 702038
>>>> 51707 49733
>>>> 8192 256 643370 698683 56233 63165
>>>> 28846 543952 27745 576739 44014 701007 725534
>>>> 59611 58985
>>>> 8192 512 696884 776793 67258 52705
>>>> 18711 698854 21004 694124 621695 784812 773331
>>>> 43101 47659
>>>> 8192 1024 729664 810451 15470 15875
>>>> 31318 801490 38123 812944 301222 804323 832765
>>>> 54308 53376
>>>> 8192 2048 749217 68757 21914 22667
>>>> 48971 783309 48132 782738 172848 907408 929324
>>>> 51156 50565
>>>> 8192 4096 707677 763960 32063 31928
>>>> 47809 751692 49560 786339 93445 1046761 1297876
>>>> 48037 51680
>>>> 8192 8192 623817 746288 2815955 3137358
>>>> 48722 741633 35428 753787 49626 803683 823800
>>>> 48977 52895
>>>> 16384 4 72372 73651 34471 30788
>>>> 960 23610 903 22316 891 71445 71138
>>>> 56451 55129
>>>> 16384 8 137920 141704 50830 33857
>>>> 1935 41934 2275 35588 3608 130757 137801
>>>> 51621 48525
>>>> 16384 16 245369 242460 41808 29770
>>>> 3605 75682 4355 75315 4767 241100 239693
>>>> 53263 30785
>>>> 16384 32 448877 433956 31846 35010
>>>> 7973 118181 8819 112703 8177 381734 391651
>>>> 57749 63417
>>>> 16384 64 710831 700712 66792 68864
>>>> 20176 209806 19034 207852 21255 589503 601379
>>>> 104567 105162
>>>> 16384 128 836901 860867 104226 100373
>>>> 40899 358865 40946 360562 39415 675968 691538
>>>> 96086 105695
>>>> 16384 256 798081 828146 107103 120433
>>>> 39084 595325 39050 593110 56925 763466 797859
>>>> 109645 113414
>>>> 16384 512 810851 843931 113564 106202
>>>> 35111 714831 46244 745947 53636 802902 760172
>>>> 110492 100879
>>>> 16384 1024 726399 820219 22106 22987
>>>> 53087 749053 54781 777705 1075341 772686 809723
>>>> 100349 96619
>>>> 16384 2048 807772 856458 23920 23617
>>>> 66320 829576 72105 740848 656379 864539 835446
>>>> 93499 101714
>>>> 16384 4096 797470 840596 27270 28132
>>>> 88784 834938 83428 836809 342898 953274 969699
>>>> 96499 100657
>>>> 16384 8192 760063 812942 41022 40014
>>>> 102020 812135 104063 820346 229870 1252409 1398306
>>>> 100959 103793
>>>> 16384 16384 743107 825054 3074035 3551062
>>>> 97740 826175 103597 803926 94681 820474 829106
>>>> 97168 92018
>>>> 32768 64 713528 714585 71310 74296
>>>> 21135 194177 21551 202998 21110 571030 595232
>>>> 98598 103373
>>>> 32768 128 766698 820615 103028 102269
>>>> 39013 328409 40325 346403 41084 684604 702513
>>>> 103887 100689
>>>> 32768 256 766591 819138 107557 113878
>>>> 42088 574878 41778 557989 55045 749922 754434
>>>> 100964 104866
>>>> 32768 512 774365 846915 104255 106094
>>>> 35280 728957 25829 734316 26990 750614 800955
>>>> 55013 63750
>>>> 32768 1024 759113 806241 22033 22622
>>>> 37322 761870 45003 766950 54519 755666 741339
>>>> 70018 66255
>>>> 32768 2048 797566 860344 22893 23859
>>>> 49973 778872 53509 779539 796674 817078 797585
>>>> 56750 57047
>>>> 32768 4096 796693 798985 24267 25222
>>>> 54410 781810 53053 802845 421421 832858 855811
>>>> 56748 60507
>>>> 32768 8192 741543 795144 29254 29150
>>>> 58678 830011 55545 833914 221323 914182 952916
>>>> 56120 60014
>>>> 32768 16384 754641 819797 44183 45718
>>>> 67293 785047 65078 807273 132136 1240414 1267713
>>>> 56585 56167
>>>> 65536 64 663333 656588 32211 31925
>>>> 17324 202043 15477 215981 15496 592126 597188
>>>> 86431 93969
>>>> 65536 128 716218 791603 92035 95614
>>>> 40330 330127 39295 346542 39469 697385 714453
>>>> 105094 98327
>>>> 65536 256 769283 798701 110285 110085
>>>> 38404 535730 39939 585023 52402 741206 749899
>>>> 98671 100106
>>>> 65536 512 728151 814516 112550 108873
>>>> 32284 690164 38911 708244 50047 778669 765303
>>>> 98333 92728
>>>> 65536 1024 773504 827108 21542 20741
>>>> 45901 775473 57282 807232 69359 770793 766736
>>>> 101465 100905
>>>> 65536 2048 767661 853446 21077 21260
>>>> 59825 762711 71985 802488 87290 772402 775685
>>>> 96832 103189
>>>> 65536 4096 767669 828165 20681 21480
>>>> 79798 829757 91755 838367 1379411 791248 783023
>>>> 106433 112769
>>>> 65536 8192 739291 784946 23100 22454
>>>> 85945 785134 87081 828489 642088 816781 798275
>>>> 93307 95318
>>>> 65536 16384 736401 791669 26345 26384
>>>> 93082 799356 91419 751766 385721 911919 884688
>>>> 109668 96374
>>>> 131072 64 658361 661211 79790 81016
>>>> 19460 182084 19325 195428 19553 551809 554426
>>>> 96581 81979
>>>> 131072 128 759806 838994 51063 56976
>>>> 33624 326699 36329 360593 35679 710602 716538
>>>> 81725 51819
>>>> 131072 256 787375 843763 54664 65031
>>>> 33847 557817 35093 581552 45163 750234 758452
>>>> 82704 83472
>>>> 131072 512 777460 818049 87831 87110
>>>> 27994 705621 31860 723071 38483 779489 793068
>>>> 88281 86068
>>>> 131072 1024 737158 782780 19005 18897
>>>> 36614 735240 38900 812074 52149 746598 762694
>>>> 74376 82534
>>>> 131072 2048 777386 817330 24169 24693
>>>> 55171 769662 56082 788848 55937 757716 763147
>>>> 73508 82351
>>>> 131072 4096 751757 792201 25283 25173
>>>> 48455 813945 56557 837418 59578 749106 757939
>>>> 67846 70964
>>>> 131072 8192 743004 796673 20369 20327
>>>> 88990 780925 95956 777211 951528 762755 739851
>>>> 70850 69943
>>>> 131072 16384 766023 823611 22333 22142
>>>> 108337 796852 110848 777704 718954 809861 802822
>>>> 115896 82903
>>>> 262144 64 655769 695392 45973 45668
>>>> 19083 209417 18768 207272 19133 601329 599267
>>>> 107705 87261
>>>> 262144 128 750052 798999 72711 74713
>>>> 37329 339480 36854 365587 37187 710898 714372
>>>> 108400 78806
>>>> 262144 256 788355 815575 80897 75141
>>>> 37080 549762 37521 574393 51731 780429 751131
>>>> 97395 73842
>>>> 262144 512 714994 736649 80224 80195
>>>> 32986 708196 36048 628508 44043 767699 781863
>>>> 123267 83558
>>>> 262144 1024 793541 800826 20200 20428
>>>> 45599 752027 48232 798229 57011 715643 763691
>>>> 76741 73211
>>>> 262144 2048 699395 782935 20227 20519
>>>> 65785 779219 80486 803403 93381 650054 712171
>>>> 115611 108457
>>>> 262144 4096 629531 766261 20544 21563
>>>> 83107 819917 93008 844103 90625 741879 754931
>>>> 94114 94475
>>>> 262144 8192 731695 804112 21158 21589
>>>> 82987 787869 84858 799483 95127 731822 737397
>>>> 95950 95160
>>>> 262144 16384 703376 802552 21940 22371
>>>> 87748 777024 90349 779626 1018679 765278 619969
>>>> 96051 92734
>>>> 524288 64 649937 710342 73778 70893
>>>> 19734 207179 19367 199709 19493 585910 581340
>>>> 91902 91443
>>>> 524288 128 739270 805153 91507 90395
>>>> 38547 319049 37988 358516 38123 712602 711814
>>>> 92463 90851
>>>> 524288 256 751279 802496 89481 91022
>>>> 38869 544097 38244 569142 56130 756367 752466
>>>> 92677 92875
>>>> 524288 512 758393 819788 58085 73437
>>>> 29030 700120 28767 739236 33925 770177 795879
>>>> 58963 72689
>>>> 524288 1024 778385 818368 18822 18639
>>>> 38774 798827 50898 799492 55679 801849 800917
>>>> 92778 82686
>>>> 524288 2048 780594 834612 19936 19994
>>>> 63147 769555 63007 802512 66322 772900 771314
>>>> 86628 93485
>>>> 524288 4096 769806 812570 20165 20137
>>>> 79896 783615 71217 80835 68550 80166 73733
>>>> 122559 116844
>>>> 524288 8192 797504 887823 123824 124513
>>>> 94520 844880 86441 710319 65077 636713 819868
>>>> 87765 80121
>>>> 524288 16384 788468 858216 92580 117354
>>>> 109583 850179 63966 856965 121151 789252 805040
>>>> 123810 119088
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Feb 27, 2013, at 2:46 PM, Bryan Whitehead
>>>> <driver at megahappy.net <mailto:driver at megahappy.net>> wrote:
>>>>
>>>>> How are you doing the read/write tests on the
>>>>> fuse/glusterfs mountpoint? Many small files will be slow
>>>>> because all the time is spent coordinating locks.
>>>>>
>>>>>
>>>>> On Wed, Feb 27, 2013 at 9:31 AM, Thomas Wakefield
>>>>> <twake at cola.iges.org <mailto:twake at cola.iges.org>> wrote:
>>>>>
>>>>> Help please-
>>>>>
>>>>>
>>>>> I am running 3.3.1 on Centos using a 10GB network. I
>>>>> get reasonable write speeds, although I think they
>>>>> could be faster. But my read speeds are REALLY slow.
>>>>>
>>>>> Executive summary:
>>>>>
>>>>> On gluster client-
>>>>> Writes average about 700-800MB/s
>>>>> Reads average about 70-80MB/s
>>>>>
>>>>> On server-
>>>>> Writes average about 1-1.5GB/s
>>>>> Reads average about 2-3GB/s
>>>>>
>>>>> Any thoughts?
>>>>>
>>>>>
>>>>>
>>>>> Here are some additional details:
>>>>>
>>>>> Nothing interesting in any of the log files,
>>>>> everything is very quite.
>>>>> All servers had no other load, and all clients are
>>>>> performing the same way.
>>>>>
>>>>>
>>>>> Volume Name: shared
>>>>> Type: Distribute
>>>>> Volume ID: de11cc19-0085-41c3-881e-995cca244620
>>>>> Status: Started
>>>>> Number of Bricks: 26
>>>>> Transport-type: tcp
>>>>> Bricks:
>>>>> Brick1: fs-disk2:/storage/disk2a
>>>>> Brick2: fs-disk2:/storage/disk2b
>>>>> Brick3: fs-disk2:/storage/disk2d
>>>>> Brick4: fs-disk2:/storage/disk2e
>>>>> Brick5: fs-disk2:/storage/disk2f
>>>>> Brick6: fs-disk2:/storage/disk2g
>>>>> Brick7: fs-disk2:/storage/disk2h
>>>>> Brick8: fs-disk2:/storage/disk2i
>>>>> Brick9: fs-disk2:/storage/disk2j
>>>>> Brick10: fs-disk2:/storage/disk2k
>>>>> Brick11: fs-disk2:/storage/disk2l
>>>>> Brick12: fs-disk2:/storage/disk2m
>>>>> Brick13: fs-disk2:/storage/disk2n
>>>>> Brick14: fs-disk2:/storage/disk2o
>>>>> Brick15: fs-disk2:/storage/disk2p
>>>>> Brick16: fs-disk2:/storage/disk2q
>>>>> Brick17: fs-disk2:/storage/disk2r
>>>>> Brick18: fs-disk2:/storage/disk2s
>>>>> Brick19: fs-disk2:/storage/disk2t
>>>>> Brick20: fs-disk2:/storage/disk2u
>>>>> Brick21: fs-disk2:/storage/disk2v
>>>>> Brick22: fs-disk2:/storage/disk2w
>>>>> Brick23: fs-disk2:/storage/disk2x
>>>>> Brick24: fs-disk3:/storage/disk3a
>>>>> Brick25: fs-disk3:/storage/disk3b
>>>>> Brick26: fs-disk3:/storage/disk3c
>>>>> Options Reconfigured:
>>>>> performance.write-behind: on
>>>>> performance.read-ahead: on
>>>>> performance.io-cache: on
>>>>> performance.stat-prefetch: on
>>>>> performance.quick-read: on
>>>>> cluster.min-free-disk: 500GB
>>>>> nfs.disable: off
>>>>>
>>>>>
>>>>> sysctl.conf settings for 10GBe
>>>>> # increase TCP max buffer size settable using setsockopt()
>>>>> net.core.rmem_max = 67108864
>>>>> net.core.wmem_max = 67108864
>>>>> # increase Linux autotuning TCP buffer limit
>>>>> net.ipv4.tcp_rmem = 4096 87380 67108864
>>>>> net.ipv4.tcp_wmem = 4096 65536 67108864
>>>>> # increase the length of the processor input queue
>>>>> net.core.netdev_max_backlog = 250000
>>>>> # recommended default congestion control is htcp
>>>>> net.ipv4.tcp_congestion_control=htcp
>>>>> # recommended for hosts with jumbo frames enabled
>>>>> net.ipv4.tcp_mtu_probing=1
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Thomas W.
>>>>> Sr. Systems Administrator COLA/IGES
>>>>> twake at cola.iges.org <mailto:twake at cola.iges.org>
>>>>> Affiliate Computer Scientist GMU
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Gluster-users mailing list
>>>>> Gluster-users at gluster.org
>>>>> <mailto:Gluster-users at gluster.org>
>>>>> http://supercolony.gluster.org/mailman/listinfo/gluster-users
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20130228/3f65adff/attachment.html>
More information about the Gluster-users
mailing list