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2026-04-14 - 19:19
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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 the 100 highest latencies:
System rack1slot2.osadl.org (updated Tue Apr 14, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
635128584,0sleep00-21swapper/007:18:460
644528079,0sleep10-21swapper/107:19:511
6551994242,0cyclictest9110-21md0_resync08:49:372
6549994141,0cyclictest9108-21md1_resync08:49:360
647723026,0sleep30-21swapper/307:20:093
623422925,0sleep20-21swapper/207:17:282
6551991515,0cyclictest83050irq/26-0000:00:09:34:532
6551991010,0cyclictest83050irq/26-0000:00:12:06:202
65519999,0cyclictest83050irq/26-0000:00:11:45:312
65519999,0cyclictest83050irq/26-0000:00:11:29:242
65519988,0cyclictest83050irq/26-0000:00:12:05:012
8305070,0irq/26-0000:00:0-21swapper/209:42:392
65519977,0cyclictest83050irq/26-0000:00:12:31:312
65519977,0cyclictest83050irq/26-0000:00:12:11:552
65519977,0cyclictest83050irq/26-0000:00:11:35:592
65519977,0cyclictest83050irq/26-0000:00:11:12:102
65519977,0cyclictest83050irq/26-0000:00:10:59:112
65519977,0cyclictest83050irq/26-0000:00:10:15:572
65499970,0cyclictest18864-21cut11:45:280
27170,0ktimersoftd/20-21swapper/210:09:462
8305060,0irq/26-0000:00:7482-21perl07:20:243
8305060,0irq/26-0000:00:5223-21grep10:20:392
8305060,0irq/26-0000:00:28543-21grep08:40:303
8305060,0irq/26-0000:00:26207-21diskstats07:55:243
8305060,0irq/26-0000:00:13931-21munin-node10:25:382
8305060,0irq/26-0000:00:0-21swapper/209:51:002
65519966,0cyclictest83050irq/26-0000:00:12:48:022
65519966,0cyclictest83050irq/26-0000:00:12:28:402
65519966,0cyclictest83050irq/26-0000:00:12:19:512
65519966,0cyclictest83050irq/26-0000:00:10:41:402
65519966,0cyclictest83050irq/26-0000:00:10:37:012
65519966,0cyclictest83050irq/26-0000:00:09:46:002
65519960,0cyclictest0-21swapper/208:03:572
65509966,0cyclictest21121-21diskmemload12:17:051
65509960,0cyclictest0-21swapper/111:04:241
65499965,0cyclictest2091-21cut10:40:270
65499960,0cyclictest0-21swapper/010:30:250
339960,0migration/324673-21sh12:42:133
339960,0migration/32277-21sh11:53:223
339960,0migration/318064-21munin-node08:55:263
339960,0migration/311529-21kthreadcore09:30:313
29805060,0irq/28-eth0-rx-8292-21tr12:15:313
29805060,0irq/28-eth0-rx-1744-21cut12:30:303
29805060,0irq/28-eth0-rx-10864-21grep12:35:303
149960,0migration/031113-21kthreadcore10:00:290
149960,0migration/018271-21kthreadcore08:30:310
149960,0migration/013085-21kthreadcore09:50:310
149960,0migration/01031-21sh09:44:500
8305050,0irq/26-0000:00:4592-21cut08:00:283
8305050,0irq/26-0000:00:4337-21fschecks_count07:40:253
8305050,0irq/26-0000:00:31169-21perl11:15:252
8305050,0irq/26-0000:00:25959-21kthreadcore11:30:312
8305050,0irq/26-0000:00:21146-21runrttasks07:29:423
8305050,0irq/26-0000:00:20264-21ssh11:07:252
8305050,0irq/26-0000:00:19167-21ssh09:55:172
8305050,0irq/26-0000:00:16335-21sh11:40:552
8305050,0irq/26-0000:00:12718-21kthreadcore07:45:303
8305050,0irq/26-0000:00:11873-21kthreadcore08:50:293
8305050,0irq/26-0000:00:0-21swapper/309:10:243
8305050,0irq/26-0000:00:0-21swapper/308:05:293
65519955,0cyclictest83050irq/26-0000:00:10:45:212
65519955,0cyclictest83050irq/26-0000:00:09:26:352
65519955,0cyclictest0-21swapper/210:50:362
65519955,0cyclictest0-21swapper/207:32:252
65519950,0cyclictest0-21swapper/209:00:142
65519950,0cyclictest0-21swapper/208:56:082
65509955,0cyclictest0-21swapper/112:44:211
65509955,0cyclictest0-21swapper/111:45:231
65509955,0cyclictest0-21swapper/110:14:061
65509954,0cyclictest31366-21awk09:25:281
65509954,0cyclictest11170-21awk10:45:281
65509950,0cyclictest0-21swapper/112:32:411
65509950,0cyclictest0-21swapper/111:31:591
65509950,0cyclictest0-21swapper/111:23:191
65509950,0cyclictest0-21swapper/107:38:391
65499950,0cyclictest0-21swapper/010:36:150
339950,0migration/37328-21kthreadcore08:25:303
339950,0migration/36405-21taskset09:09:373
339950,0migration/36023-21kthreadcore11:55:303
339950,0migration/35355-21taskset11:17:093
339950,0migration/33805-21timerwakeupswit12:10:373
339950,0migration/33511-21latency_hist07:40:113
339950,0migration/331208-21idleruntime09:25:273
339950,0migration/325661-21kthreadcore07:30:293
339950,0migration/325322-21cpuspeed_turbos09:40:233
339950,0migration/323974-21kthreadcore10:50:313
339950,0migration/321177-21kthreadcore08:10:303
339950,0migration/320189-21kthreadcore12:20:293
339950,0migration/320011-21fschecks_time09:55:263
339950,0migration/319198-21munin-node11:45:303
339950,0migration/315629-21taskset11:25:253
339950,0migration/315183-21kthreadcore11:40:353
339950,0migration/314026-3199-raid-check09:15:173
339950,0migration/311641-21munin-node09:50:303
329950,0watchdog/33177-21cut08:45:263
329950,0watchdog/3298732sleep308:19:103
329950,0watchdog/325106-21unixbench_singl07:50:383
329950,0watchdog/31922-21diskstats09:45:263
329950,0watchdog/30-21swapper/310:36:113
329950,0watchdog/30-21swapper/310:10:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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