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2026-05-25 - 11:58
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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 highest latencies:
System rackdslot1.osadl.org (updated Mon May 25, 2026 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
214082730,5sleep00-21swapper/000:00:200
134491710,4ptp4l18391-21irqstats19:15:193
1522299655,10cyclictest2318-21gnome-shell21:15:252
1522299634,11cyclictest757-21polkitd21:00:252
1522299620,60cyclictest0-21swapper/222:10:292
1522299620,60cyclictest0-21swapper/222:10:292
46198610,4rtkit-daemon22164-21apt-get19:25:133
1522299596,51cyclictest0-21swapper/220:30:292
1522299593,15cyclictest0-21swapper/219:10:132
134491590,5ptp4l0-21swapper/300:35:133
134491590,4ptp4l0-21swapper/322:20:113
1522299584,15cyclictest22738-21latency_hist00:05:022
1522299582,54cyclictest0-21swapper/221:05:282
134491570,4ptp4l0-21swapper/000:20:190
1522299568,7cyclictest0-21swapper/200:25:022
1522299566,11cyclictest0-21swapper/220:43:592
1522299565,16cyclictest448-21dbus-daemon22:05:272
1522299563,15cyclictest212-21systemd-journal21:39:552
134491560,4ptp4l0-21swapper/321:41:503
134491560,4ptp4l0-21swapper/321:41:503
134491560,3ptp4l0-21swapper/220:05:222
1522299555,17cyclictest23093-21/usr/sbin/munin22:55:142
134491550,4ptp4l1522099cyclictest23:14:260
134491550,4ptp4l0-21swapper/019:05:050
134491550,3ptp4l0-21swapper/321:23:443
1522299546,7cyclictest27382-21iostat_ios19:35:182
1522299544,16cyclictest19533-21sshd20:27:072
134491540,3ptp4l0-21swapper/320:01:143
134491540,3ptp4l0-21swapper/223:47:202
1522299532,10cyclictest11200-21latency_hist23:40:002
134491530,4ptp4l0-21swapper/323:45:583
134491530,4ptp4l0-21swapper/323:42:153
134491530,4ptp4l0-21swapper/321:25:393
134491530,3ptp4l0-21swapper/323:24:253
134491530,3ptp4l0-21swapper/319:34:293
1522299521,14cyclictest31425-21timedrift00:20:272
134491520,3ptp4l0-21swapper/320:31:383
134491520,12ptp4l0-21swapper/321:35:183
134491520,11ptp4l0-21swapper/300:02:163
134491510,4ptp4l0-21swapper/322:57:263
134491510,4ptp4l0-21swapper/322:07:373
134491510,3ptp4l0-21swapper/320:46:043
1522299504,44cyclictest0-21swapper/223:15:292
1522299503,17cyclictest15639-21date21:30:002
1522299503,11cyclictest26350-21systemctl23:00:272
1522299502,15cyclictest30930-21/usr/sbin/munin22:00:252
1522299501,15cyclictest0-21swapper/219:50:282
1522299501,15cyclictest0-21swapper/219:50:282
134491500,4ptp4l0-21swapper/323:51:173
1522299493,17cyclictest29984-21cat20:50:162
1522299490,5cyclictest134491ptp4l19:45:272
134491490,3ptp4l0-21swapper/322:14:493
134491490,3ptp4l0-21swapper/322:14:493
134491490,3ptp4l0-21swapper/320:56:073
134491490,2ptp4l0-21swapper/119:30:191
134491480,3ptp4l0-21swapper/323:07:513
134491480,3ptp4l0-21swapper/120:21:261
1522299477,6cyclictest0-21swapper/220:15:182
1522299473,9cyclictest7813-21ntp_states23:30:232
134491470,3ptp4l0-21swapper/321:31:093
134491470,3ptp4l0-21swapper/319:20:233
134491470,13ptp4l0-21swapper/023:40:140
1522299465,6cyclictest137891phc2sys00:16:042
1522299464,10cyclictest6503-21/usr/sbin/munin22:20:222
134491460,4ptp4l0-21swapper/221:43:252
134491460,4ptp4l0-21swapper/221:43:252
134491460,3ptp4l0-21swapper/320:21:553
134491460,3ptp4l0-21swapper/222:41:052
134491460,20ptp4l13075-21taskset20:15:063
134491460,11ptp4l0-21swapper/122:10:161
134491460,11ptp4l0-21swapper/122:10:161
1522299456,7cyclictest0-21swapper/223:50:142
1522299456,15cyclictest23856-21ntp_states21:45:212
1522299454,6cyclictest28768-21ssh21:55:272
134491450,6ptp4l14002-21ntp_states19:05:231
134491450,5ptp4l0-21swapper/122:41:471
134491450,3ptp4l0-21swapper/020:16:280
134491450,10ptp4l0-21swapper/123:06:331
134491440,6ptp4l0-21swapper/020:50:250
134491440,5ptp4l0-21swapper/320:25:263
134491440,5ptp4l0-21swapper/020:22:000
134491440,4ptp4l23278-21ntp_states19:25:220
134491440,4ptp4l0-21swapper/120:00:181
134491440,3ptp4l0-21swapper/321:18:163
134491440,10ptp4l0-21swapper/019:30:460
1522299435,6cyclictest0-21swapper/219:25:112
134491430,9ptp4l0-21swapper/021:37:250
134491430,5ptp4l3537-21/usr/sbin/munin00:30:230
134491430,5ptp4l10322-21users21:15:290
134491430,5ptp4l0-21swapper/222:30:132
134491430,5ptp4l0-21swapper/020:30:290
134491430,4ptp4l27336-21apt-get21:55:113
134491430,4ptp4l0-21swapper/323:59:523
134491430,4ptp4l0-21swapper/322:26:513
134491430,4ptp4l0-21swapper/023:06:500
134491430,3ptp4l22308-21apt-get20:35:132
134491430,10ptp4l0-21swapper/220:48:572
1522299428,6cyclictest0-21swapper/200:30:252
1522299423,7cyclictest11736-21ls20:10:192
1522299423,15cyclictest12434-21ntp_states23:40:232
1522199422,39cyclictest0-21swapper/120:30:381
15220994236,4cyclictest9-21ksoftirqd/021:25:180
134491420,9ptp4l0-21swapper/020:12:540
134491420,5ptp4l5341-21/usr/sbin/munin22:15:233
134491420,5ptp4l0-21swapper/023:25:230
134491420,5ptp4l0-21swapper/019:45:110
134491420,4ptp4l24033-21users20:35:291
134491420,4ptp4l18914-21irqstats22:45:191
134491420,4ptp4l16484-21iostat_ios23:50:170
134491420,4ptp4l0-21swapper/300:25:153
134491420,4ptp4l0-21swapper/022:03:490
134491420,3ptp4l9949-21meminfo23:35:220
134491420,3ptp4l0-21swapper/200:10:012
134491410,9ptp4l0-21swapper/022:25:270
134491410,5ptp4l0-21swapper/223:10:182
134491410,5ptp4l0-21swapper/222:49:582
134491410,5ptp4l0-21swapper/021:40:170
134491410,5ptp4l0-21swapper/021:40:160
134491410,5ptp4l0-21swapper/021:30:180
134491410,4ptp4l28632-21memory00:15:230
134491410,4ptp4l27762-21meminfo19:35:213
134491410,4ptp4l27640-21df_inode21:55:141
134491410,4ptp4l25342-21df_inode21:50:160
134491410,4ptp4l10339-21apt-get20:10:011
134491410,4ptp4l0-21swapper/300:15:193
134491410,4ptp4l0-21swapper/300:05:293
134491410,4ptp4l0-21swapper/123:22:201
134491410,4ptp4l0-21swapper/120:55:141
134491410,4ptp4l0-21swapper/022:55:130
134491410,4ptp4l0-21swapper/019:53:550
134491410,4ptp4l0-21swapper/019:53:550
134491410,4ptp4l0-21swapper/019:36:220
134491410,4ptp4l0-21swapper/019:23:020
134491410,3ptp4l8853-21apt-get22:25:132
134491410,3ptp4l31918-21apt-get23:15:111
134491410,3ptp4l22828-21apt-get00:05:162
134491410,3ptp4l0-21swapper/320:44:423
134491410,3ptp4l0-21swapper/300:11:503
134491410,3ptp4l0-21swapper/022:51:150
1522399401,6cyclictest3050-21users19:50:303
1522399401,6cyclictest3050-21users19:50:303
15222994028,10cyclictest33-21ksoftirqd/221:10:272
134491400,5ptp4l20237-21/usr/sbin/munin19:20:142
134491400,5ptp4l1522399cyclictest22:00:113
134491400,5ptp4l0-21swapper/319:45:263
134491400,5ptp4l0-21swapper/220:20:112
134491400,4ptp4l8859-21iostat_ios20:05:193
134491400,4ptp4l10720-21apt-get21:20:032
134491400,4ptp4l0-21swapper/322:40:153
134491400,4ptp4l0-21swapper/320:35:213
134491400,4ptp4l0-21swapper/300:31:173
134491400,4ptp4l0-21swapper/222:15:122
134491400,4ptp4l0-21swapper/123:41:011
134491400,4ptp4l0-21swapper/122:39:221
134491400,4ptp4l0-21swapper/121:22:451
134491400,4ptp4l0-21swapper/119:42:491
134491400,4ptp4l0-21swapper/023:50:000
134491400,4ptp4l0-21swapper/023:21:590
134491400,4ptp4l0-21swapper/023:15:110
134491400,4ptp4l0-21swapper/023:02:340
134491400,4ptp4l0-21swapper/022:45:070
134491400,4ptp4l0-21swapper/022:41:400
134491400,4ptp4l0-21swapper/022:39:130
134491400,4ptp4l0-21swapper/022:21:480
134491400,4ptp4l0-21swapper/022:15:590
134491400,4ptp4l0-21swapper/022:08:010
134491400,4ptp4l0-21swapper/021:58:340
134491400,4ptp4l0-21swapper/021:45:580
134491400,4ptp4l0-21swapper/020:46:000
134491400,4ptp4l0-21swapper/020:08:120
134491400,4ptp4l0-21swapper/000:37:090
134491400,4ptp4l0-21swapper/000:29:370
134491400,4ptp4l0-21swapper/000:05:180
134491400,3ptp4l2874-21ntp_states21:00:241
134491400,3ptp4l2846-21meminfo23:20:202
134491400,3ptp4l21408-21strings22:50:233
134491400,3ptp4l0-21swapper/120:53:151
134491400,3ptp4l0-21swapper/100:30:171
134491400,3ptp4l0-21swapper/100:15:261
134491390,5ptp4l18877-21phc2sys20:25:221
134491390,5ptp4l0-21swapper/323:00:133
134491390,5ptp4l0-21swapper/119:36:531
134491390,5ptp4l0-21swapper/019:17:580
134491390,4ptp4l9795-21ls22:25:191
134491390,4ptp4l4103-21hddtemp_smartct19:55:172
134491390,4ptp4l30860-21cut00:20:193
134491390,4ptp4l3021-21sed19:50:291
134491390,4ptp4l3021-21sed19:50:291
134491390,4ptp4l1301-21snmpd22:35:053
134491390,4ptp4l0-21swapper/323:15:123
134491390,4ptp4l0-21swapper/322:45:253
134491390,4ptp4l0-21swapper/322:30:233
134491390,4ptp4l0-21swapper/321:05:163
134491390,4ptp4l0-21swapper/320:10:163
134491390,4ptp4l0-21swapper/223:05:132
134491390,4ptp4l0-21swapper/222:51:142
134491390,4ptp4l0-21swapper/222:35:152
134491390,4ptp4l0-21swapper/220:00:072
134491390,4ptp4l0-21swapper/219:40:142
134491390,4ptp4l0-21swapper/219:34:522
134491390,4ptp4l0-21swapper/123:38:291
134491390,4ptp4l0-21swapper/123:28:021
134491390,4ptp4l0-21swapper/122:33:501
134491390,4ptp4l0-21swapper/121:54:451
134491390,4ptp4l0-21swapper/121:45:001
134491390,4ptp4l0-21swapper/121:45:001
134491390,4ptp4l0-21swapper/120:45:341
134491390,4ptp4l0-21swapper/119:45:241
134491390,4ptp4l0-21swapper/119:25:511
134491390,4ptp4l0-21swapper/119:20:141
134491390,4ptp4l0-21swapper/100:29:491
134491390,4ptp4l0-21swapper/023:30:340
134491390,4ptp4l0-21swapper/022:10:270
134491390,4ptp4l0-21swapper/022:10:270
134491390,4ptp4l0-21swapper/021:20:020
134491390,4ptp4l0-21swapper/021:13:110
134491390,4ptp4l0-21swapper/021:07:090
134491390,4ptp4l0-21swapper/021:00:070
134491390,4ptp4l0-21swapper/020:40:290
134491390,4ptp4l0-21swapper/020:25:130
134491390,4ptp4l0-21swapper/020:00:510
134491390,4ptp4l0-21swapper/019:57:280
134491390,4ptp4l0-21swapper/019:40:120
134491390,4ptp4l0-21swapper/019:10:160
134491390,4ptp4l0-21swapper/000:12:240
134491390,3ptp4l4761-21apt-get00:35:152
134491390,3ptp4l25993-21memory21:50:213
134491390,3ptp4l23258-21iostat_ios21:45:163
134491390,3ptp4l0-21swapper/321:01:023
134491390,3ptp4l0-21swapper/221:30:062
134491390,3ptp4l0-21swapper/123:50:191
134491390,3ptp4l0-21swapper/119:15:161
134491390,3ptp4l0-21swapper/023:55:230
134491390,3ptp4l0-21swapper/022:30:260
134491390,2ptp4l31043-21ls23:10:253
134491380,4ptp4l29994-21if_enp4s020:50:173
134491380,4ptp4l0-21swapper/323:35:213
134491380,4ptp4l0-21swapper/323:30:453
134491380,4ptp4l0-21swapper/323:25:503
134491380,4ptp4l0-21swapper/321:10:203
134491380,4ptp4l0-21swapper/319:55:263
134491380,4ptp4l0-21swapper/319:40:273
134491380,4ptp4l0-21swapper/319:10:273
134491380,4ptp4l0-21swapper/223:25:242
134491380,4ptp4l0-21swapper/221:52:002
134491380,4ptp4l0-21swapper/220:55:122
134491380,4ptp4l0-21swapper/123:00:251
134491380,4ptp4l0-21swapper/122:54:461
134491380,4ptp4l0-21swapper/122:02:411
134491380,4ptp4l0-21swapper/121:48:471
134491380,4ptp4l0-21swapper/121:14:051
134491380,4ptp4l0-21swapper/100:39:261
134491380,3ptp4l794-21grep20:55:260
134491380,3ptp4l22545-21df_abs20:35:160
134491380,3ptp4l18192-21/usr/sbin/munin23:55:212
134491380,3ptp4l0-21swapper/219:16:072
134491380,3ptp4l0-21swapper/122:55:131
134491380,3ptp4l0-21swapper/120:15:231
134491380,3ptp4l0-21swapper/100:22:591
134491380,3ptp4l0-21swapper/100:07:461
134491370,4ptp4l0-21swapper/123:12:051
134491370,4ptp4l0-21swapper/121:05:291
134491370,4ptp4l0-21swapper/120:41:201
134491370,4ptp4l0-21swapper/100:10:251
134491370,3ptp4l0-21swapper/123:45:161
134491370,3ptp4l0-21swapper/123:34:461
134491370,3ptp4l0-21swapper/122:20:021
134491370,3ptp4l0-21swapper/121:30:171
134491360,4ptp4l0-21swapper/122:05:291
134491360,3ptp4l0-21swapper/121:27:411
134491360,3ptp4l0-21swapper/120:07:161
134491360,2ptp4l0-21swapper/119:10:131
134491340,3ptp4l0-21swapper/100:04:521
15221993328,3cyclictest25-21ksoftirqd/123:57:161
15221993327,4cyclictest25-21ksoftirqd/119:57:591
15221993226,4cyclictest25-21ksoftirqd/121:39:041
15221993125,4cyclictest25-21ksoftirqd/122:18:071
134491300,3ptp4l0-21swapper/121:19:581
137891223,12phc2sys14320-21ssh19:05:273
141772144,5sleep20-21swapper/219:05:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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