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2021-04-21 - 00:18

AMD Ryzen Threadripper 1950X 16-Core Processor, Linux 5.4.47-rt28 (Profile)

Latency plot of system in rack #c, slot #8
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rackcslot8.osadl.org (updated Tue Apr 20, 2021 13:23:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2307912980,288ptp4l0-21swapper/107:05:571
234191270262,5phc2sys0-21swapper/207:05:2012
182189915451,62cyclictest0-21swapper/411:40:0126
182609914831,95cyclictest0-21swapper/912:30:1131
183869914434,72cyclictest24859-21missed_timers11:35:1817
18386991440,77cyclictest0-21swapper/2411:34:2317
182389914144,50cyclictest0-21swapper/712:01:0029
182609914024,70cyclictest0-21swapper/910:10:5831
182609914024,70cyclictest0-21swapper/910:10:5831
183869913961,50cyclictest0-21swapper/2411:25:2417
183659913954,51cyclictest0-21swapper/2112:10:2314
183659913953,54cyclictest0-21swapper/2112:17:1614
183659913948,52cyclictest0-21swapper/2107:45:2014
18386991380,70cyclictest0-21swapper/2409:50:1117
18386991380,70cyclictest0-21swapper/2409:50:1117
183659913855,48cyclictest0-21swapper/2111:05:0314
183869913753,46cyclictest0-21swapper/2411:50:1317
18365991370,72cyclictest24283-21runrttasks08:55:1814
183869913649,57cyclictest0-21swapper/2410:23:5117
183869913649,57cyclictest0-21swapper/2410:23:5017
183869913637,60cyclictest0-21swapper/2412:35:2317
18319991353,69cyclictest0-21swapper/1610:55:158
182189913518,88cyclictest0-21swapper/412:03:2726
183659913336,51cyclictest0-21swapper/2110:48:5314
183469913322,79cyclictest0-21swapper/1908:15:2811
183869913229,58cyclictest0-21swapper/2412:01:3517
182389913249,45cyclictest0-21swapper/711:10:0829
183469913132,56cyclictest0-21swapper/1909:23:3511
183469913132,56cyclictest0-21swapper/1909:23:3511
183659913044,49cyclictest0-21swapper/2111:28:2814
18365991290,69cyclictest0-21swapper/2110:10:0014
18365991290,69cyclictest0-21swapper/2110:10:0014
18365991282,67cyclictest0-21swapper/2111:15:2314
183659912825,56cyclictest0-21swapper/2111:10:2514
182389912859,50cyclictest0-21swapper/710:54:4529
182189912850,44cyclictest0-21swapper/411:15:1126
183659912752,40cyclictest0-21swapper/2109:10:1514
183379912749,46cyclictest0-21swapper/1811:30:1710
182389912762,52cyclictest0-21swapper/710:32:5029
182389912762,52cyclictest0-21swapper/710:32:5029
182189912730,45cyclictest0-21swapper/407:45:0026
184069912641,60cyclictest0-21swapper/2709:40:1820
184069912641,60cyclictest0-21swapper/2709:40:1720
183659912630,53cyclictest0-21swapper/2109:08:3914
183659912630,53cyclictest0-21swapper/2109:08:3914
183379912651,42cyclictest0-21swapper/1809:35:2010
183379912651,42cyclictest0-21swapper/1809:35:1910
183379912648,51cyclictest0-21swapper/1812:09:2710
182389912627,57cyclictest0-21swapper/710:25:1729
182389912627,57cyclictest0-21swapper/710:25:1629
183659912547,44cyclictest0-21swapper/2109:38:0514
183659912547,44cyclictest0-21swapper/2109:38:0414
182389912544,47cyclictest0-21swapper/712:29:0229
182189912548,46cyclictest0-21swapper/412:19:3926
182189912516,73cyclictest16126-21runrttasks09:35:5626
182189912516,73cyclictest16126-21runrttasks09:35:5526
183379912451,42cyclictest0-21swapper/1809:20:5510
183379912451,42cyclictest0-21swapper/1809:20:5410
183199912422,70cyclictest0-21swapper/1611:41:158
182389912427,58cyclictest0-21swapper/711:10:0129
182389912426,59cyclictest0-21swapper/712:40:0129
182189912456,44cyclictest0-21swapper/410:03:5526
182189912456,44cyclictest0-21swapper/410:03:5526
182189912451,42cyclictest0-21swapper/411:54:2926
183659912318,54cyclictest0-21swapper/2109:51:5114
183659912318,54cyclictest0-21swapper/2109:51:5114
183469912338,54cyclictest0-21swapper/1908:36:3511
182389912343,53cyclictest0-21swapper/712:20:0929
182189912340,50cyclictest0-21swapper/411:45:2026
182189912249,51cyclictest0-21swapper/410:20:2626
182189912249,51cyclictest0-21swapper/410:20:2526
182189912239,50cyclictest0-21swapper/409:55:1226
182189912239,50cyclictest0-21swapper/409:55:1126
182189912226,52cyclictest0-21swapper/412:11:2726
18386991210,61cyclictest0-21swapper/2408:05:2817
183469912143,45cyclictest0-21swapper/1911:53:0911
182189912126,56cyclictest0-21swapper/411:55:2526
182189912126,50cyclictest0-21swapper/407:45:0126
183379912018,63cyclictest0-21swapper/1811:51:3310
182389912026,54cyclictest0-21swapper/709:10:0129
182389912024,54cyclictest0-21swapper/711:57:4929
182189912049,43cyclictest0-21swapper/412:30:4426
182189912026,58cyclictest0-21swapper/411:01:0226
182189912026,57cyclictest0-21swapper/408:55:0226
182189912024,56cyclictest0-21swapper/410:56:2826
18365991191,63cyclictest0-21swapper/2108:40:2114
182969911947,41cyclictest0-21swapper/1310:28:085
182969911947,41cyclictest0-21swapper/1310:28:085
183659911826,49cyclictest0-21swapper/2110:10:0214
183659911826,49cyclictest0-21swapper/2110:10:0114
183659911826,48cyclictest0-21swapper/2110:01:3414
183659911826,48cyclictest0-21swapper/2110:01:3314
183379911827,54cyclictest0-21swapper/1808:15:0110
183379911826,53cyclictest0-21swapper/1812:15:0110
183379911824,56cyclictest0-21swapper/1810:20:1210
183379911824,56cyclictest0-21swapper/1810:20:1210
183379911824,52cyclictest0-21swapper/1809:19:5110
183379911824,52cyclictest0-21swapper/1809:19:5010
183379911823,48cyclictest0-21swapper/1810:03:3910
183379911823,48cyclictest0-21swapper/1810:03:3810
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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