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2023-06-02 - 10:27

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 792 highest latencies:
System rack1slot8.osadl.org (updated Fri Jun 02, 2023 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1257799512431,50cyclictest0-21swapper/119:22:441
1257699460378,53cyclictest0-21swapper/019:10:100
1257799402323,49cyclictest0-21swapper/119:10:101
1257699367289,52cyclictest0-21swapper/019:22:440
122172355330,17sleep00-21swapper/019:06:470
2119991140,5rtkit-daemon2118-21rtkit-daemon19:43:590
2119991010,4rtkit-daemon2118-21rtkit-daemon23:56:591
123652940,3sleep041ktimersoftd/000:30:310
201112930,4sleep020112-21munin-node23:50:270
211999880,4rtkit-daemon2118-21rtkit-daemon21:28:511
286252840,5sleep128626-21ssh21:24:021
18802760,3sleep041ktimersoftd/023:20:220
1257699753,64cyclictest9401-21ssh00:25:280
1228727536,26sleep10-21swapper/119:07:281
1257699746,61cyclictest0-21swapper/023:45:220
1257699734,61cyclictest17521-21ssh22:52:060
5662720,13sleep11257799cyclictest00:10:411
211999720,10rtkit-daemon0-21swapper/022:49:270
1257699723,39cyclictest22135-21ssh22:05:370
1257699723,38cyclictest8198-21munin-node23:30:280
211999710,4rtkit-daemon2118-21rtkit-daemon22:16:120
211999710,3rtkit-daemon0-21swapper/021:16:410
1257699714,62cyclictest0-21swapper/021:53:330
1257699714,61cyclictest0-21swapper/022:04:250
1257699714,60cyclictest0-21swapper/000:08:170
1257699713,49cyclictest29023-21unixbench_singl23:10:380
12576997112,52cyclictest0-21swapper/000:00:230
1257699705,59cyclictest0-21swapper/000:16:560
1257699703,60cyclictest25574-21ssh23:05:270
12576997021,42cyclictest79450irq/46-eth0-tx-22:10:130
1257699702,62cyclictest15689-21unixbench_multi00:35:350
1257699702,59cyclictest7697-21timerandwakeup22:35:310
211999690,10rtkit-daemon0-21swapper/023:42:590
1257699695,56cyclictest0-21swapper/020:30:010
1257699693,58cyclictest26486-21munin-node21:20:210
1257699693,58cyclictest1539-21sendmail_mailqu22:25:290
1257699693,42cyclictest5688-21ssh22:32:390
1257699692,60cyclictest13370-21ssh23:39:520
1257699692,59cyclictest21179-21runrttasks21:10:410
1257699692,44cyclictest31453-21ssh21:28:340
211999680,10rtkit-daemon0-21swapper/019:45:040
1257699684,45cyclictest22785-21munin-node23:55:350
1257699683,57cyclictest32289-21kernelversion00:10:260
1257699683,55cyclictest17912-21vmstat21:00:340
1257699682,60cyclictest20047-21diskmemload21:58:040
1257699682,56cyclictest22845-21timerwakeupswit23:00:310
12576996819,43cyclictest0-21swapper/021:37:080
1257699674,57cyclictest0-21swapper/022:57:320
12576996720,40cyclictest79450irq/46-eth0-tx-00:20:190
1257699672,58cyclictest1951-21ssh21:33:060
1257699672,39cyclictest7168-21ssh21:40:560
1257699666,53cyclictest0-21swapper/020:40:310
1257699663,39cyclictest415-21idleruntime-cro22:25:010
1257699662,56cyclictest32499-21munin-run20:10:010
1257699662,48cyclictest16720-21idleruntime-cro21:00:010
1257699655,45cyclictest0-21swapper/019:55:210
1257699655,44cyclictest0-21swapper/021:45:070
1257699653,37cyclictest20049-21munin-run21:10:010
12576996524,27cyclictest0-21swapper/019:53:360
12576996521,31cyclictest79450irq/46-eth0-tx-23:15:050
1257699652,57cyclictest11738-21rm22:42:440
1257699652,53cyclictest22711-21gvfsd-trash23:25:240
1257699645,44cyclictest0-21swapper/020:35:010
1257699643,54cyclictest10101-21basename20:40:010
1257699642,56cyclictest29529-21munin-node20:00:370
1257699642,35cyclictest20210-21timerwakeupswit19:30:310
12576996411,38cyclictest3490-21basename20:20:010
1257699636,50cyclictest0-21swapper/020:55:010
1257699636,50cyclictest0-21swapper/020:10:190
12576996324,32cyclictest79450irq/46-eth0-tx-19:25:180
84922625,16sleep10-21swapper/122:37:081
133252625,15sleep10-21swapper/121:51:161
1257699623,44cyclictest0-21swapper/020:20:360
1257699622,53cyclictest12766-21timerwakeupswit20:45:330
167772614,13sleep10-21swapper/100:38:131
1257699615,41cyclictest0-21swapper/019:15:100
1257699602,51cyclictest20996-21munin-node19:35:170
12577995917,35cyclictest0-21swapper/100:00:141
298762583,12sleep10-21swapper/123:12:461
228212584,12sleep10-21swapper/122:07:201
202072584,12sleep10-21swapper/122:56:141
1257799574,47cyclictest0-21swapper/123:48:321
83592564,12sleep10-21swapper/100:24:591
240172564,13sleep10-21swapper/119:43:191
221352564,12sleep10-21swapper/121:12:521
181682564,12sleep10-21swapper/122:00:211
176402564,12sleep10-21swapper/122:52:261
128372564,13sleep10-21swapper/100:30:491
1257799569,40cyclictest0-21swapper/120:45:321
1257799564,46cyclictest0-21swapper/123:22:481
1257799564,46cyclictest0-21swapper/121:46:001
1257799564,46cyclictest0-21swapper/121:39:281
102792564,7sleep10-21swapper/100:27:051
295382554,12sleep10-21swapper/122:19:101
274722554,12sleep10-21swapper/119:54:401
274482555,14sleep10-21swapper/123:09:221
243402554,12sleep10-21swapper/119:45:061
17032554,12sleep10-21swapper/120:14:041
1257799556,42cyclictest0-21swapper/123:27:281
1257799555,35cyclictest0-21swapper/120:40:361
1257799554,45cyclictest0-21swapper/120:00:161
100142554,12sleep10-21swapper/120:39:201
81032544,12sleep10-21swapper/120:31:421
56102544,12sleep10-21swapper/122:32:271
207472544,12sleep10-21swapper/119:34:131
180212544,12sleep10-21swapper/121:01:291
147752544,12sleep10-21swapper/120:52:111
1257799545,43cyclictest0-21swapper/121:55:401
1257799544,44cyclictest0-21swapper/120:59:041
1257799544,44cyclictest0-21swapper/119:36:361
155772534,12sleep10-21swapper/119:17:071
1257799537,39cyclictest0-21swapper/121:30:241
1257799535,42cyclictest0-21swapper/121:06:161
1257799534,43cyclictest0-21swapper/122:43:001
85522524,12sleep10-21swapper/121:44:391
12577995216,30cyclictest0-21swapper/120:07:321
289332514,12sleep10-21swapper/119:57:381
1257799514,41cyclictest0-21swapper/119:28:121
224342504,11sleep10-21swapper/123:54:521
162292502,7sleep116233-21ssh23:44:261
1257799504,41cyclictest0-21swapper/123:37:241
1257799504,40cyclictest0-21swapper/120:27:121
1257799504,40cyclictest0-21swapper/120:21:531
294462494,12sleep10-21swapper/100:05:341
1257799494,40cyclictest0-21swapper/123:18:521
1257799494,40cyclictest0-21swapper/122:47:171
1257799494,39cyclictest0-21swapper/123:01:401
1257799494,39cyclictest0-21swapper/120:19:521
1257799477,34cyclictest0-21swapper/122:25:331
1257799475,36cyclictest0-21swapper/123:32:401
1257799465,36cyclictest0-21swapper/122:22:561
1257799465,34cyclictest0-21swapper/122:10:041
1257799455,34cyclictest0-21swapper/100:17:201
1257799444,35cyclictest0-21swapper/121:18:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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