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2022-12-02 - 01:37

x86 Intel Atom Z530 @1600 MHz, Linux 3.12.61-rt81 (Profile)

Latency plot of system in rack #1, 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, highest latencies:
System rack1slot8.osadl.org (updated Fri Dec 02, 2022 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2945499904823,51cyclictest0-21swapper/119:10:031
2945399758676,53cyclictest0-21swapper/019:10:030
293962691668,16sleep00-21swapper/019:09:460
2945399461384,53cyclictest0-21swapper/019:24:130
2945499406331,48cyclictest0-21swapper/119:24:141
291982367345,16sleep10-21swapper/119:07:471
2119991290,6rtkit-daemon0-21swapper/000:12:341
2283021090,3sleep122831-21ssh22:34:181
24362970,14sleep00-21swapper/022:54:120
211999940,10rtkit-daemon0-21swapper/121:45:060
211999780,4rtkit-daemon2118-21rtkit-daemon21:20:101
2945399756,59cyclictest0-21swapper/020:55:010
211999750,4rtkit-daemon2118-21rtkit-daemon21:57:001
29453997345,21cyclictest0-21swapper/019:29:270
29453997344,22cyclictest0-21swapper/023:40:270
236172730,5sleep04600-21diskmemload21:40:250
29453997244,21cyclictest0-21swapper/021:35:150
29453997244,21cyclictest0-21swapper/021:35:140
2945399724,59cyclictest18074-21ssh23:20:120
2945399723,53cyclictest17392-21ssh21:30:250
2945399715,59cyclictest0-21swapper/023:10:010
2945399713,54cyclictest10525-21runrttasks22:13:280
2945399713,43cyclictest18971-21ssh00:15:170
2945399712,62cyclictest4859-21cpu21:10:120
2945399712,50cyclictest28655-21ssh23:37:130
2945399707,55cyclictest0-21swapper/022:55:130
2945399706,57cyclictest26932-21ssh00:28:400
2945399704,60cyclictest6527-21ssh23:55:080
2945399703,60cyclictest15956-21munin-node00:10:190
2945399702,62cyclictest24875-21ssh23:30:250
2945399702,37cyclictest19756-21seq22:29:100
29453997016,47cyclictest30115-21munin-node22:45:240
2945399696,52cyclictest0-21swapper/022:40:250
2945399694,38cyclictest8186-21ssh21:15:170
2945399688,52cyclictest13757-21df_abs21:25:140
2945399685,56cyclictest0-21swapper/022:35:150
2945399685,56cyclictest0-21swapper/022:07:310
29453996828,34cyclictest0-21swapper/022:23:160
2945399682,61cyclictest24038-21ssh00:23:590
2945399682,59cyclictest12619-21munin-node00:05:130
2945399682,59cyclictest11976-21ksmtuned21:21:040
2945399682,57cyclictest8745-21latency_hist23:05:020
29453996812,50cyclictest79450irq/46-eth0-tx-23:16:340
29453996812,50cyclictest79450irq/46-eth0-tx-23:16:330
2945399677,52cyclictest0-21swapper/021:55:140
2945399676,50cyclictest0-21swapper/019:15:240
2945399675,56cyclictest0-21swapper/023:13:580
2945399673,57cyclictest79450irq/46-eth0-tx-22:31:270
2945399673,57cyclictest1013-21missed_timers23:45:190
2945399673,56cyclictest31039-21munin-node00:35:180
2945399673,56cyclictest2079-21latency_hist22:00:010
29453996714,46cyclictest79450irq/46-eth0-tx-00:30:190
2945399668,49cyclictest0-21swapper/000:00:200
2945399666,38cyclictest0-21swapper/020:25:170
2945399665,54cyclictest0-21swapper/019:40:020
2945399664,45cyclictest0-21swapper/021:51:340
2945399663,52cyclictest15347-21awk20:05:000
2945399663,44cyclictest23828-21munin-node20:30:160
2945399662,57cyclictest21341-21wc23:25:170
2945399652,57cyclictest26036-21runrttasks20:35:200
2945399652,56cyclictest4155-21munin-node23:50:200
2945399652,55cyclictest11966-21munin-node22:15:210
2945399652,54cyclictest28634-21latency_hist20:45:000
2945399644,53cyclictest0-21swapper/019:53:030
2945399642,56cyclictest18438-21chrt20:12:540
2945399642,53cyclictest21166-21processes20:20:210
2945399636,50cyclictest0-21swapper/019:30:280
29453996313,35cyclictest8250irq/14-pata_sch20:20:010
2945399622,45cyclictest10361-21latency_hist19:50:010
2945399622,43cyclictest1170-21runrttasks20:59:210
2945399622,34cyclictest1070-21snmpd21:00:280
211999620,7rtkit-daemon0-21swapper/021:07:490
211999620,7rtkit-daemon0-21swapper/019:43:030
211999620,10rtkit-daemon0-21swapper/020:47:290
2945399612,35cyclictest16994-21latency_hist20:10:000
211999610,8rtkit-daemon0-21swapper/019:56:590
82482605,15sleep10-21swapper/123:57:061
211999600,11rtkit-daemon2118-21rtkit-daemon23:18:231
211999600,11rtkit-daemon2118-21rtkit-daemon23:18:221
83262584,12sleep10-21swapper/123:03:541
139072584,12sleep10-21swapper/123:12:511
66262574,12sleep10-21swapper/119:35:491
29454995633,17cyclictest0-21swapper/120:45:251
25752564,12sleep10-21swapper/122:54:341
233272564,12sleep10-21swapper/120:26:431
156142565,10sleep10-21swapper/121:27:511
108732564,12sleep10-21swapper/123:07:421
70932555,16sleep10-21swapper/122:07:151
10362554,12sleep10-21swapper/120:58:081
254722544,12sleep10-21swapper/120:35:091
211999540,4rtkit-daemon2118-21rtkit-daemon22:01:411
190372544,12sleep10-21swapper/121:34:021
168622534,12sleep10-21swapper/120:08:471
53262524,12sleep10-21swapper/119:34:251
34742525,15sleep10-21swapper/121:05:171
32932524,13sleep10-21swapper/119:25:411
31182525,15sleep10-21swapper/123:49:241
299272520,14sleep12945499cyclictest22:45:211
286052524,12sleep10-21swapper/120:44:501
26042524,12sleep10-21swapper/121:01:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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