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Patriot RageXT Bullshit

By: destrudo on Apr 29th, 2012  |  syntax: None  |  size: 4.87 KB  |  hits: 23  |  expires: Never
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  1. Patriot Rage XT 8GB Performance (Given the statistics noted elsewhere, the same applies to the 16 but not necessarily the 32, and I'm a budget clusterer, not a rich man who can afford 32gigs on his nodes.)
  2.  
  3. EXT4
  4. Version  1.96       ------Sequential Output------ --Sequential Input- --Random-
  5. Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
  6. Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
  7. Thanatos         6G   365  96 14944   2  9167   2  1334  99 34432   6  35.9   1
  8. Latency             27274us    1348ms     923ms   14977us   11379us    1008ms
  9. Version  1.96       ------Sequential Create------ --------Random Create--------
  10. Thanatos            -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
  11.               files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  12.                  16  4117   9 +++++ +++  6496  11  5452  11 +++++ +++  9355  17
  13. Latency               398us    1829us    1045us     427us      66us     324us
  14. 1.96,1.96,Thanatos,1,1335631111,6G,,365,96,14944,2,9167,2,1334,99,34432,6,35.9,1,16,,,,,4117,9,+++++,+++,6496,11,5452,11,+++++,+++,9355,17,27274us,1348ms,923ms,14977us,11379us,1008ms,398us,1829us,1045us,427us,66us,324us
  15.  
  16. Worked really well, fresh format yielded ok results (not the 25MB/s promised, but tolerable.)  These results directly correlate with those of others.
  17.  
  18. BTRFS
  19. Version  1.96       ------Sequential Output------ --Sequential Input- --Random-
  20. Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
  21. Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
  22. Thanatos         6G   143  98 13219   4  8965   4  1286  99 38271  13 207.2 319
  23. Latency             57080us     922ms    1222ms   25420us     239ms     548ms
  24. Version  1.96       ------Sequential Create------ --------Random Create--------
  25. Thanatos            -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
  26.               files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  27.                  16  4182  42 +++++ +++  6582  96  5531  54 +++++ +++  6875  96
  28. Latency               355us    4045us    3356us     699us      34us    1690us
  29. 1.96,1.96,Thanatos,1,1335714323,6G,,143,98,13219,4,8965,4,1286,99,38271,13,207.2,319,16,,,,,4182,42,+++++,+++,6582,96,5531,54,+++++,+++,6875,96,57080us,922ms,1222ms,25420us,239ms,548ms,355us,4045us,3356us,699us,34us,1690us
  30.  
  31. Boom, what? btrfs slower?  ...But faster reads? What?
  32.  
  33. XFS
  34. Version  1.96       ------Sequential Output------ --Sequential Input- --Random-
  35. Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
  36. Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
  37. Thanatos         6G   509  95 13138   2  8965   2  1053  99 33640   5  38.5   1
  38. Latency             22559us     920ms    1923ms    9558us   25722us   26944ms
  39. Version  1.96       ------Sequential Create------ --------Random Create--------
  40. Thanatos            -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
  41.               files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  42.                  16   522   4 +++++ +++   521   3   570   4 +++++ +++   245   1
  43. Latency              1031ms     568us     507ms     859ms      39us    1178ms
  44. 1.96,1.96,Thanatos,1,1335689776,6G,,509,95,13138,2,8965,2,1053,99,33640,5,38.5,1,16,,,,,522,4,+++++,+++,521,3,570,4,+++++,+++,245,1,22559us,920ms,1923ms,9558us,25722us,26944ms,1031ms,568us,507ms,859ms,39us,1178ms
  45.  
  46. At this point I got very suspicious, these numbers are VERY low and they correlate (btrfs in tests has been a bit above xfs for many things).
  47.  
  48. EXT4 Second pass
  49. Version  1.96       ------Sequential Output------ --Sequential Input- --Random-
  50. Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
  51. Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
  52. Thanatos         6G   360  96 12994   2  8978   2  1410  98 33457   5  32.8   1
  53. Latency             22271us    1910ms    1038ms   17216us   25135us     998ms
  54. Version  1.96       ------Sequential Create------ --------Random Create--------
  55. Thanatos            -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
  56.               files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  57.                  16  3186   7 +++++ +++ 10313  19  7388  16 +++++ +++ 11198  21
  58. Latency               414us    1051us    4843us    4235us      34us     735us
  59. 1.96,1.96,Thanatos,1,1335696703,6G,,360,96,12994,2,8978,2,1410,98,33457,5,32.8,1,16,,,,,3186,7,+++++,+++,10313,19,7388,16,+++++,+++,11198,21,22271us,1910ms,1038ms,17216us,25135us,998ms,414us,1051us,4843us,4235us,34us,735us
  60.  
  61. Yep, zero your drive out, then write a filesystem to it, otherwise your speed is shit.
  62.  
  63.  
  64. My conclusion? Don't get tempted, get real doms rather than patriot-bullshittiot flash dicks in hope that they'll satisfy a good swapspace & /var mount for your beowulf cluster.
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