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2026-03-07 - 22:01
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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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack1slot2.osadl.org (updated Sat Mar 07, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2756996161,0cyclictest3524-21snmpd10:44:301
260023627,0sleep30-21swapper/307:16:143
237623526,0sleep20-21swapper/207:13:452
2764993332,0cyclictest83050irq/26-0000:00:10:44:302
264423324,0sleep10-21swapper/107:16:441
227222925,0sleep00-21swapper/007:12:310
27569988,0cyclictest32248-21sensors09:22:261
8305060,0irq/26-0000:00:3222-17sedispatch12:47:032
339960,0migration/314688-21taskset12:12:563
339960,0migration/313679-21sh11:53:043
339960,0migration/31329-21runrttasks11:09:323
29805060,0irq/28-eth0-rx-9227-21fschecks_time09:32:173
29805060,0irq/28-eth0-rx-23446-21kthreadcore11:22:223
29805060,0irq/28-eth0-rx-12424-21cut09:12:203
27649966,0cyclictest30481-21ssh10:47:572
27649965,0cyclictest0-21swapper/208:32:222
27649960,0cyclictest0-21swapper/212:22:322
149960,0migration/08807-21gltestperf10:37:170
8305050,0irq/26-0000:00:6309-21awk08:47:022
8305050,0irq/26-0000:00:555-21iwlist12:07:182
8305050,0irq/26-0000:00:17340-21ssh12:17:202
339950,0migration/39846-21kthreadcore07:42:193
339950,0migration/35873-21if_eth1.211:32:223
339950,0migration/33098-21aten_r1power_po10:12:143
339950,0migration/327364-21kthreadcore10:27:203
339950,0migration/325510-21kthreadcore10:47:193
339950,0migration/325433-21kthreadcore07:52:213
339950,0migration/323528-21kthreadcore11:42:203
339950,0migration/318632-21kthreadcore11:57:203
339950,0migration/317967-21cpuspeed_turbos11:02:173
339950,0migration/313806-21kthreadcore11:17:203
339950,0migration/312882-21kthreadcore12:32:223
339950,0migration/310313-21hwlatdetect08:27:183
329950,0watchdog/332522-21sh10:52:183
329950,0watchdog/331541-21kthreadcore12:42:223
329950,0watchdog/329515-21perl09:02:173
329950,0watchdog/324870-21python09:17:253
329950,0watchdog/321097-21cut12:17:223
329950,0watchdog/320970-21sed07:47:213
329950,0watchdog/30-21swapper/308:55:253
329950,0watchdog/30-21swapper/308:22:173
29815050,0irq/29-eth0-tx-3681-21munin-node09:07:180
29815050,0irq/29-eth0-tx-32485-21munin-node07:37:230
29815050,0irq/29-eth0-tx-2966-21munin-node07:17:270
29815050,0irq/29-eth0-tx-19545-21munin-node08:12:180
29815050,0irq/29-eth0-tx-14930-21munin-node07:47:270
29815050,0irq/29-eth0-tx-11101-40yum-updatesd-he09:12:150
29815050,0irq/29-eth0-tx-0-21swapper/212:27:232
29815050,0irq/29-eth0-tx-0-21swapper/211:52:162
29815050,0irq/29-eth0-tx-0-21swapper/211:33:592
29815050,0irq/29-eth0-tx-0-21swapper/009:32:200
29805050,0irq/28-eth0-rx-32055-21kthreadcore10:07:213
29805050,0irq/28-eth0-rx-3182-21kthreadcore11:47:213
29805050,0irq/28-eth0-rx-2815-21cpuspeed_turbos11:12:173
29805050,0irq/28-eth0-rx-2401-21ssh12:27:203
29805050,0irq/28-eth0-rx-23658-21fschecks_count09:42:173
29805050,0irq/28-eth0-rx-1452-21grep12:07:193
29805050,0irq/28-eth0-rx-0-21swapper/311:27:063
27649955,0cyclictest0-21swapper/207:31:592
27649950,0cyclictest0-21swapper/208:21:292
27569955,0cyclictest0-21swapper/112:32:201
27569955,0cyclictest0-21swapper/109:12:161
27569954,0cyclictest2000-21ps11:11:271
27569950,0cyclictest0-21swapper/111:02:281
27529955,0cyclictest28228-21kworker/0:012:02:220
27529955,0cyclictest17927-21kworker/0:211:42:200
27529955,0cyclictest0-21swapper/011:33:060
27529955,0cyclictest0-21swapper/011:24:440
27529955,0cyclictest0-21swapper/011:08:020
27529950,0cyclictest0-21swapper/012:12:140
259950,0migration/26939-21latency09:27:222
259950,0migration/26147-21latency07:37:202
259950,0migration/232618-21kthreadcore09:47:232
259950,0migration/231063-21fschecks_count11:47:162
259950,0migration/220510-21kthreadcore11:57:202
259950,0migration/219501-21latency_hist08:12:032
259950,0migration/215357-21timerandwakeup10:57:282
259950,0migration/213735-21kthreadcore09:12:212
249950,0watchdog/227509-21kthreadcore09:22:212
249950,0watchdog/219404-21port_sshpriv09:57:262
249950,0watchdog/218248-21diskmemload11:12:502
179950,0migration/1575-21munin-node08:17:211
179950,0migration/15300-21sh11:48:421
179950,0migration/128690-21munin-node07:52:261
179950,0migration/126297-21kthreadcore12:02:221
179950,0migration/121975-21unixbench_singl11:57:271
179950,0migration/121791-21taskset07:48:551
179950,0migration/11799-21idleruntime-cro12:47:031
179950,0migration/116790-21aten_r1power_fr08:32:141
179950,0migration/113846-21kthreadcore10:57:211
179950,0migration/113137-21unixbench-2d08:47:271
169950,0watchdog/16905-21cut09:27:211
169950,0watchdog/15600-21perl08:02:171
169950,0watchdog/123668-21aten2.4-expect10:47:141
149950,0migration/09778-21kthreadcore08:47:190
149950,0migration/08747-21kthreadcore09:52:180
149950,0migration/0514-21kthreadcore11:27:220
149950,0migration/03451-21irqrtprio08:22:180
149950,0migration/029947-21kthreadcore08:17:190
149950,0migration/029690-21kthreadcore12:22:210
149950,0migration/029434-21fschecks_time09:02:170
149950,0migration/020928-21df_abs10:02:160
149950,0migration/020210-21kthreadcore11:02:250
149950,0migration/018013-21kthreadcore08:07:210
149950,0migration/017844-21kthreadcore08:52:210
149950,0migration/015495-21kthreadcore10:17:260
149950,0migration/015101-21turbostat11:57:030
149950,0migration/013921-21kthreadcore07:22:200
149950,0migration/013194-21latency_hist11:37:030
8305040,0irq/26-0000:00:0-21swapper/209:42:022
339940,0migration/36343-21kthreadcore10:32:233
339940,0migration/322756-21kthreadcore10:02:213
339940,0migration/321821-21kthreadcore08:12:203
339940,0migration/321041-21kthreadcore12:37:223
339940,0migration/31575-21kthreadcore09:47:233
339940,0migration/313312-21kthreadcore10:17:253
329940,0watchdog/37961-21kthreadcore09:07:213
329940,0watchdog/36314-21runrttasks10:57:423
329940,0watchdog/32751-21cyclictest08:43:013
329940,0watchdog/320688-21kthreadcore10:42:223
329940,0watchdog/313101-21smartctl08:07:173
329940,0watchdog/30-21swapper/309:57:263
329940,0watchdog/30-21swapper/309:52:183
329940,0watchdog/30-21swapper/309:27:213
329940,0watchdog/30-21swapper/309:22:173
329940,0watchdog/30-21swapper/308:57:213
329940,0watchdog/30-21swapper/308:37:173
29815040,0irq/29-eth0-tx-26675-21ssh11:22:572
29815040,0irq/29-eth0-tx-18476-21munin-node09:17:190
29815040,0irq/29-eth0-tx-16718-21munin-node08:32:210
29815040,0irq/29-eth0-tx-13317-21munin-node11:37:282
29815040,0irq/29-eth0-tx-0-21swapper/212:12:562
29815040,0irq/29-eth0-tx-0-21swapper/212:04:102
29815040,0irq/29-eth0-tx-0-21swapper/211:27:042
29815040,0irq/29-eth0-tx-0-21swapper/211:17:142
29815040,0irq/29-eth0-tx-0-21swapper/211:07:222
29815040,0irq/29-eth0-tx-0-21swapper/211:02:182
29815040,0irq/29-eth0-tx-0-21swapper/210:52:312
29815040,0irq/29-eth0-tx-0-21swapper/009:42:240
29815040,0irq/29-eth0-tx-0-21swapper/007:52:150
29805040,0irq/28-eth0-rx-0-21swapper/312:22:473
29805040,0irq/28-eth0-rx-0-21swapper/312:06:253
29805040,0irq/28-eth0-rx-0-21swapper/311:37:143
29805040,0irq/28-eth0-rx-0-21swapper/310:37:223
29805040,0irq/28-eth0-rx-0-21swapper/307:22:203
27649943,0cyclictest7638-21sadc10:37:022
27649943,0cyclictest4075-21awk10:12:182
27649943,0cyclictest30787-21awk07:57:162
27649943,0cyclictest23429-21awk07:52:202
27649943,0cyclictest18423-21awk12:37:202
27649943,0cyclictest16864-21awk09:37:202
27569943,0cyclictest29062-21awk10:07:191
27569943,0cyclictest25390-21awk12:22:191
27569943,0cyclictest20594-21awk08:12:181
27569943,0cyclictest1905-21cut10:32:221
27569943,0cyclictest11599-21awk10:17:231
27569940,0cyclictest0-21swapper/112:12:141
27529944,0cyclictest28228-21kworker/0:011:58:560
27529944,0cyclictest28228-21kworker/0:011:49:240
27529944,0cyclictest17927-21kworker/0:210:47:220
27529944,0cyclictest17927-21kworker/0:208:27:210
27529944,0cyclictest17151-21kworker/0:212:32:160
27529944,0cyclictest17151-21kworker/0:212:27:200
27529943,0cyclictest8623-21awk07:42:170
27529943,0cyclictest3571-21lldpd12:08:320
27529943,0cyclictest3571-21lldpd11:02:010
27529943,0cyclictest3250-21irqbalance12:17:490
27529943,0cyclictest3250-21irqbalance11:17:190
27529943,0cyclictest3250-21irqbalance10:42:190
27529943,0cyclictest3250-21irqbalance10:27:290
27529943,0cyclictest3250-21irqbalance10:23:190
27529943,0cyclictest3250-21irqbalance10:08:190
27529943,0cyclictest3250-21irqbalance09:48:390
27529943,0cyclictest3250-21irqbalance09:27:090
27529943,0cyclictest26949-21awk12:42:190
27529943,0cyclictest26295-21awk07:32:180
27529943,0cyclictest18906-21awk07:27:260
27529943,0cyclictest1464-21awk10:32:200
27529943,0cyclictest14021-21grep09:57:180
27529943,0cyclictest1184-21awk10:52:280
259940,0migration/25623-21kthreadcore08:22:192
259940,0migration/232745-21kthreadcore10:07:212
259940,0migration/231025-21kthreadcore07:32:212
259940,0migration/227571-21runrttasks10:05:382
259940,0migration/225633-21kthreadcore11:42:212
259940,0migration/223205-21kthreadcore09:17:212
259940,0migration/221268-21sendmail_mailqu07:47:242
259940,0migration/217626-21kthreadcore08:52:212
259940,0migration/214711-21kthreadcore08:27:222
259940,0migration/212276-21timerwakeupswit09:52:262
259940,0migration/212015-21kthreadcore10:37:282
259940,0migration/210518-21kthreadcore07:42:192
249940,0watchdog/27959-21kthreadcore09:07:212
249940,0watchdog/224743-21chrt10:23:142
249940,0watchdog/20-21swapper/212:32:222
249940,0watchdog/20-21swapper/210:17:262
249940,0watchdog/20-21swapper/207:17:212
179940,0migration/19412-21aten_r1power_fr08:27:151
179940,0migration/18865-21taskset08:24:261
179940,0migration/18300-21fschecks_time07:42:151
179940,0migration/17436-21kthreadcore07:17:201
179940,0migration/17368-21kthreadcore10:12:211
179940,0migration/15000-21kthreadcore12:07:201
179940,0migration/130935-21runrttasks08:38:361
179940,0migration/126962-21runrttasks11:23:461
179940,0migration/124846-21kthreadcore08:57:211
179940,0migration/122016-21irqrtprio10:02:201
179940,0migration/116266-21kthreadcore08:07:211
179940,0migration/114499-21fschecks_count08:52:171
179940,0migration/111472-21kthreadcore10:37:281
169940,0watchdog/17974-21ssh12:30:341
169940,0watchdog/17191-21irqrtprio09:52:181
169940,0watchdog/16287-21kthreadcore11:12:261
169940,0watchdog/159362sleep108:43:011
169940,0watchdog/130887-21ps07:57:171
169940,0watchdog/120606-21kthreadcore12:37:221
169940,0watchdog/119366-21ssh11:37:221
169940,0watchdog/117979-21aten_r1power_fr10:22:141
169940,0watchdog/117322-21irqstats09:37:211
169940,0watchdog/111996-21kthreadcore09:32:211
169940,0watchdog/10-21swapper/111:52:221
169940,0watchdog/10-21swapper/111:44:261
169940,0watchdog/10-21swapper/111:19:061
149940,0migration/05238-21kthreadcore10:12:200
149940,0migration/04531-21kthreadcore08:42:200
149940,0migration/027756-21kthreadcore09:22:210
149940,0migration/024272-21cpu08:37:120
149940,0migration/021721-21kthreadcore09:37:230
149940,0migration/02037-21kthreadcore07:57:190
149940,0migration/010132-21diskmemload11:14:530
8305030,0irq/26-0000:00:0-21swapper/208:07:132
329930,0watchdog/30-21swapper/309:37:093
329930,0watchdog/30-21swapper/308:48:053
329930,0watchdog/30-21swapper/308:02:053
329930,0watchdog/30-21swapper/307:57:173
29815030,0irq/29-eth0-tx-0-21swapper/008:57:160
29805030,0irq/28-eth0-rx-0-21swapper/310:22:143
29805030,0irq/28-eth0-rx-0-21swapper/308:32:153
29805030,0irq/28-eth0-rx-0-21swapper/307:37:213
29805030,0irq/28-eth0-rx-0-21swapper/307:32:133
29805030,0irq/28-eth0-rx-0-21swapper/307:27:223
29805030,0irq/28-eth0-rx-0-21swapper/307:17:073
27649933,0cyclictest0-21swapper/210:30:552
27649932,0cyclictest3250-21irqbalance08:47:192
27649930,0cyclictest0-21swapper/207:22:592
27569933,0cyclictest29472-21awk11:27:191
27569932,0cyclictest4675-21sensors09:47:271
27569932,0cyclictest26177-21awk07:32:171
27569932,0cyclictest18851-21awk07:27:261
27569932,0cyclictest16381-21grep09:57:221
27569932,0cyclictest13601-21grep07:22:201
27529933,0cyclictest17151-21kworker/0:212:37:060
27529930,0cyclictest5179-21diskstats08:02:160
259930,0migration/225087-21kthreadcore08:57:212
249930,0watchdog/28322-21sed08:02:212
249930,0watchdog/226200-21kthreadcore08:37:172
249930,0watchdog/20-21swapper/209:32:212
249930,0watchdog/20-21swapper/209:02:172
179930,0migration/132494-21aten_r1power_cu07:37:121
169930,0watchdog/17960-21kthreadcore09:07:211
169930,0watchdog/132183-21ps09:02:211
169930,0watchdog/10-21swapper/112:17:221
169930,0watchdog/10-21swapper/111:33:021
169930,0watchdog/10-21swapper/110:52:181
169930,0watchdog/10-21swapper/109:42:211
169930,0watchdog/10-21swapper/109:17:251
29805020,0irq/28-eth0-rx-0-21swapper/308:17:043
27569920,0cyclictest25279-21latency_hist10:27:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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