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Event Builder Performance

Conditions:
  • 90 subsystems
  • I used TOF-0, TOF-1, TOF-2 and TOF-4 VME CPUs. 23/22 daq_rdosoft processes per CPU.
  • Water mark was set to 32 kB.
  • All 90 sources had the same subevt size (see table)
  • Subevent sizes were Gaussian-like smeared
  • No writing to hard disk, no rfio.
  • net.core.netdev_max_backlog = 10000
  • net.core.rmem_max = 4194304 (nettrans.c:openUdp(): requests 1 MB queue)
  • EB buffer = 8 MB (x2x2). Cannot go to 16 MB because 16x2x2x90 = 5.6 GB (more than available memory).

Results:

ev rate data rate subevt size disc evt cpu evtbuild cpu netmem load buff evtbuild buff netmem
Hz MB/sec Bytes % % %   % %
1000 12 140 0 9 5 2.3 10 5
1000 27 270 0 13 9 2.3 10 5
1000 45 530 0 10 17 2.3 10 5
1000 55 640 0 16 22 2.5 10 5
1000 70 820 0 17 27 2.7 10 5
1000 86 1024 0 22 33 2.7 10 5
1000 103 1170 0 23 35 2.7 10 5
1000 112 1270 0 27 43 2.7 10 5
1000 116 1320 0 27 45 2.7 10 5
1000 120 1370 70 - - - - -
2000 25 140 0 16 12 2.3 10 5
2000 46 270 0 21 24 2.3 10 5
2000 91 530 0 26 35 2.6 10 5
2000 110 640 0 34 44 2.6 10 5
2000 120 700 1 35 43 3.0 10 5
2000 130 760 75 - - - - -
3000 37 140 0 26 19 2.2 10 5
3000 56 220 0 29 20 2.5 10 5
3000 76 280 0 32 24 2.5 10 5
3000 95 370 0 36 39 3.5 10 5
3000 115 450 0 36 45 3.6 20 10
3000 125 500 1 40 44 3.6 20 15
3000 135 550 95 - - - 50 50
4000 50 140 0 35 21 2.3 10 5
4000 62 180 0 36 23 2.5 10 5
4000 76 220 0 43 31 2.5 10 5
4000 88 260 0 43 33 3.2 10 5
4000 101 290 0 48 41 3.2 20 15
4000 114 330 0 48 41 3.2 25 20
4000 127 370 99 - - - 100 100
5000 62 140 0 39 36 2.6 15 5
5000 70 160 0 48 31 2.6 15 5
5000 78 200 0 49 39 2.6 15 5
5000 94 220 0 54 41 2.6 20 15
5000 110 260 0 56 41 2.6 20 15
5000 126 300 80 - - - 20 15
6000 74 140 0 61 27 2.9 20 15
6000 95 180 0 57 41 2.9 20 15
6000 104 200 0 62 38 2.9 30 20
6000 115 220 99 62 38 3.3 30 30

-- SergeyYurevich - 08 Feb 2008
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