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2026-05-07 - 09:15
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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 Thu May 07, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
658624233,0sleep20-21swapper/219:18:592
682924031,0sleep10-21swapper/119:21:501
3224223626,0sleep30-21swapper/319:17:083
677523319,0sleep00-21swapper/019:21:090
69269999,0cyclictest24403-21sensors23:32:252
69269960,0cyclictest0-21swapper/221:22:592
339960,0migration/38782-21sh22:11:533
339960,0migration/332641-21latency23:37:233
339960,0migration/321448-21sh00:09:453
339960,0migration/319415-21munin-node19:52:193
339960,0migration/318736-21sh22:34:193
339960,0migration/312492-21sh22:49:583
29815060,0irq/29-eth0-tx-0-21swapper/222:35:382
29805060,0irq/28-eth0-rx-7054-21ssh21:52:143
29805060,0irq/28-eth0-rx-7054-21ssh21:52:143
29805060,0irq/28-eth0-rx-5661-21tr22:27:203
29805060,0irq/28-eth0-rx-3883-21perl23:42:173
29805060,0irq/28-eth0-rx-24130-21python22:17:263
29805060,0irq/28-eth0-rx-19737-21sh21:38:083
29805060,0irq/28-eth0-rx-17034-21iostat23:12:203
29805060,0irq/28-eth0-rx-13261-21kthreadcore00:22:213
29805060,0irq/28-eth0-rx-1250-21kthreadcore21:07:203
8305050,0irq/26-0000:00:0-21swapper/223:07:032
69269950,0cyclictest0-21swapper/221:17:192
69269950,0cyclictest0-21swapper/220:52:052
69269950,0cyclictest0-21swapper/220:33:002
69249955,0cyclictest0-21swapper/023:01:090
69249953,0cyclictest8149-21kworker/0:100:37:310
339950,0migration/3976-21sh22:23:163
339950,0migration/39386-21kthreadcore00:02:213
339950,0migration/37540-21taskset23:22:353
339950,0migration/35161-21kthreadcore20:47:213
339950,0migration/34840-21munin-node21:47:283
339950,0migration/33970-21aten_r1power_vo20:27:153
339950,0migration/331560-21taskset00:32:523
339950,0migration/329614-21gltestperf19:37:173
339950,0migration/329194-21kthreadcore21:27:203
339950,0migration/328672-21taskset20:21:423
339950,0migration/328254-21taskset19:34:453
339950,0migration/325930-21fschecks_count20:42:153
339950,0migration/317932-21taskset21:18:373
339950,0migration/312875-21kthreadcore20:32:193
339950,0migration/312841-21munin-node23:47:183
329950,0watchdog/32353-21kthreadcore20:02:173
329950,0watchdog/317335-21ssh22:16:343
329950,0watchdog/313024-21needreboot19:22:213
329950,0watchdog/311087-21cut23:27:223
329950,0watchdog/30-21swapper/321:32:183
329950,0watchdog/30-21swapper/321:12:223
29815050,0irq/29-eth0-tx-7508-21munin-node00:22:152
29815050,0irq/29-eth0-tx-622-21munin-node23:22:212
29815050,0irq/29-eth0-tx-3822-21munin-node20:27:200
29815050,0irq/29-eth0-tx-3703-21cat00:37:202
29815050,0irq/29-eth0-tx-20615-21ssh21:40:172
29815050,0irq/29-eth0-tx-19997-21munin-node22:37:212
29815050,0irq/29-eth0-tx-18501-21munin-node21:22:150
29815050,0irq/29-eth0-tx-15525-21latency_hist23:12:032
29815050,0irq/29-eth0-tx-12630-21perl23:47:172
29815050,0irq/29-eth0-tx-0-21swapper/223:39:072
29815050,0irq/29-eth0-tx-0-21swapper/222:07:212
29815050,0irq/29-eth0-tx-0-21swapper/221:31:162
29815050,0irq/29-eth0-tx-0-21swapper/200:14:372
29805050,0irq/28-eth0-rx-30839-21ssh00:16:533
29805050,0irq/28-eth0-rx-29366-21taskset22:58:463
29805050,0irq/28-eth0-rx-12927-21kthreadcore23:07:223
29805050,0irq/28-eth0-rx-0-21swapper/323:57:203
29805050,0irq/28-eth0-rx-0-21swapper/323:03:523
29805050,0irq/28-eth0-rx-0-21swapper/322:55:313
29805050,0irq/28-eth0-rx-0-21swapper/322:43:243
29805050,0irq/28-eth0-rx-0-21swapper/322:37:213
29805050,0irq/28-eth0-rx-0-21swapper/322:04:493
29805050,0irq/28-eth0-rx-0-21swapper/321:57:283
29805050,0irq/28-eth0-rx-0-21swapper/321:44:103
29805050,0irq/28-eth0-rx-0-21swapper/321:25:373
29805050,0irq/28-eth0-rx-0-21swapper/300:42:213
29805050,0irq/28-eth0-rx-0-21swapper/300:17:203
27150,0ktimersoftd/20-21swapper/222:02:142
259950,0migration/29806-21munin-node20:27:232
259950,0migration/230457-21kthreadcore22:42:202
259950,0migration/230116-21hwlatdetect21:07:172
259950,0migration/227765-21kthreadcore23:17:222
259950,0migration/224468-21kthreadcore21:42:182
259950,0migration/223581-21kthreadcore20:17:202
259950,0migration/217656-21kthreadcore00:07:222
259950,0migration/215505-21sh21:57:092
259950,0migration/212224-21kthreadcore20:07:202
259950,0migration/210977-21runrttasks22:31:502
259950,0migration/210877-21missed_timers22:47:222
259950,0migration/210624-21sh21:32:372
249950,0watchdog/215682-21ps23:27:262
19150,0ktimersoftd/10-21swapper/123:16:041
179950,0migration/19968-21munin-node23:27:171
179950,0migration/17186-21munin-node23:07:151
179950,0migration/132642-21kthreadcore20:22:201
179950,0migration/121733-21taskset20:17:041
179950,0migration/117669-21munin-node23:47:221
179950,0migration/116886-21kthreadcore22:52:201
179950,0migration/114610-21aten_r1power_po20:12:131
179950,0migration/110615-21taskset23:44:401
149950,0migration/09216-21timerwakeupswit22:27:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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