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2026-06-10 - 15:57
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Wed Jun 10, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12793912267225,28sleep10-21swapper/107:08:091
12794292266188,28sleep00-21swapper/007:08:320
127972299682,43cyclictest1314121-21apt-get08:35:141
127972299682,43cyclictest1286284-21apt-get07:25:121
127972299663,41cyclictest1373657-21apt-get10:10:121
127972299663,40cyclictest1388229-21apt-get10:30:131
127972299662,41cyclictest1325853-21apt-get09:05:101
179699640,4rtkit-daemon1795-21rtkit-daemon09:42:320
13877992600,3sleep10-21swapper/110:29:411
179699580,11rtkit-daemon1795-21rtkit-daemon10:05:581
127972299580,4cyclictest1436669-21ssh11:35:151
127972299572,31cyclictest1355010-21apt-get09:45:121
127972299569,35cyclictest1338041-21ssh09:22:491
127972299552,3cyclictest1351204-21apt-get09:40:111
127972299550,3cyclictest1431600-21ssh11:28:081
127972299550,32cyclictest1331743-21/usr/sbin/munin09:15:181
127972299549,28cyclictest1292144-21cut07:40:011
127972299543,39cyclictest1282358-21apt-get07:15:111
1279722995410,27cyclictest1341772-21seq09:27:051
127972299540,3cyclictest1398644-21taskset10:44:511
127972299538,31cyclictest1327602-21diskmemload09:10:531
127972299532,40cyclictest1414256-21apt-get11:05:131
127972299532,32cyclictest1347283-21apt-get09:35:131
127972299530,3cyclictest1440334-21ls11:40:161
127972299530,3cyclictest1427581-21ssh11:21:591
127972299526,29cyclictest1446014-21seq11:47:261
127972299522,39cyclictest1462120-21apt-get12:10:111
1279722995210,24cyclictest66950irq/132-enp2s010:45:131
127972299520,4cyclictest1309268-21sensors08:20:241
127972299520,38cyclictest1279816-21/usr/sbin/munin07:10:141
127972299516,33cyclictest0-21swapper/112:31:061
127972299512,40cyclictest1418583-21needreboot11:10:201
127972299511,40cyclictest1432690-21apt-get11:30:111
127972299511,38cyclictest1447491-21apt-get11:50:131
179699500,3rtkit-daemon1795-21rtkit-daemon09:30:160
127972299509,27cyclictest1293825-21seq07:43:391
127972299506,29cyclictest850-21runrttasks12:27:081
127972299505,30cyclictest1327602-21diskmemload10:22:461
127972299503,2cyclictest1327602-21diskmemload10:01:321
127972299502,37cyclictest1316091-21apt-get08:40:121
127972299501,37cyclictest1469243-21apt-get12:20:101
127972299500,3cyclictest1359574-21ntpq09:50:211
127972299498,30cyclictest0-21swapper/109:32:571
127972299497,27cyclictest14684392chrt12:18:501
127972299490,3cyclictest1404014-21ntp_states10:50:211
127972299490,37cyclictest1327602-21diskmemload11:00:041
127972299490,33cyclictest1318790-21ntpq08:45:211
127972299487,24cyclictest0-21swapper/112:04:301
127972299481,7cyclictest1392138-21diskstats10:35:151
127972299481,6cyclictest1377475-21diskstats10:15:131
127972299481,5cyclictest1422075-21diskstats11:15:151
127972299481,3cyclictest1300806-21ntp_states08:00:231
127972299481,34cyclictest1327602-21diskmemload10:55:401
127972299481,33cyclictest1327602-21diskmemload09:56:071
127972299480,9cyclictest1461629-21taskset12:09:321
127972299480,36cyclictest1481231-21ssh12:35:241
127972299480,31cyclictest1323889-21/usr/sbin/munin09:00:241
127972299471,5cyclictest1294169-21apt-get07:45:151
127972299471,10cyclictest1298062-21apt-get07:55:111
127972299470,9cyclictest1453409-21ssh11:57:191
127972299470,3cyclictest1312919-21ntpq08:30:191
127972299461,4cyclictest1321935-21apt-get08:55:111
127972299460,8cyclictest1303807-21cut08:10:001
179699450,4rtkit-daemon1795-21rtkit-daemon07:52:261
127972299451,8cyclictest1303934-21apt-get08:10:101
127972299441,8cyclictest1311500-21users08:25:241
127972299441,6cyclictest1284338-21apt-get07:20:111
127972299441,4cyclictest1305711-21python308:15:031
127972299421,4cyclictest1288575-21perl07:30:161
127972299421,3cyclictest1320753-21ntp_states08:50:201
179699390,3rtkit-daemon1795-21rtkit-daemon07:31:340
179699380,5rtkit-daemon0-21swapper/110:06:510
179699360,3rtkit-daemon0-21swapper/110:38:160
179699350,5rtkit-daemon66950irq/132-enp2s011:50:330
179699350,4rtkit-daemon1795-21rtkit-daemon12:25:260
179699350,4rtkit-daemon1795-21rtkit-daemon11:19:580
1279718993529,4cyclictest1280631-21open_inodes07:10:200
179699340,6rtkit-daemon1290901-21netstat07:35:200
179699340,3rtkit-daemon0-21swapper/111:38:590
179699340,3rtkit-daemon0-21swapper/111:07:240
179699340,3rtkit-daemon0-21swapper/012:14:140
179699330,4rtkit-daemon1795-21rtkit-daemon09:23:000
179699330,3rtkit-daemon1795-21rtkit-daemon11:14:180
179699330,3rtkit-daemon0-21swapper/111:55:300
179699330,3rtkit-daemon0-21swapper/110:12:580
179699320,3rtkit-daemon0-21swapper/110:59:190
127971899328,6cyclictest13-21ksoftirqd/011:25:130
1279718993220,3cyclictest1354990-21/usr/sbin/munin09:45:170
1279718993214,5cyclictest13-21ksoftirqd/012:31:000
179699310,3rtkit-daemon0-21swapper/112:37:160
179699310,3rtkit-daemon0-21swapper/110:02:370
179699310,3rtkit-daemon0-21swapper/108:40:540
179699310,3rtkit-daemon0-21swapper/108:02:530
1279718993117,2cyclictest1402097-21ssh10:49:070
1279718993116,5cyclictest1446363-21ssh11:48:130
179699300,3rtkit-daemon1795-21rtkit-daemon12:09:050
179699300,3rtkit-daemon1795-21rtkit-daemon08:37:580
179699300,3rtkit-daemon0-21swapper/109:51:470
127971899306,3cyclictest141rcu_preempt12:20:000
179699290,3rtkit-daemon0-21swapper/111:30:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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