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2026-04-03 - 12:15
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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 highest latencies:
System rack1slot2.osadl.org (updated Fri Apr 03, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2395523423,0sleep00-21swapper/019:17:300
2402723329,0sleep10-21swapper/119:18:191
2382623127,0sleep20-21swapper/219:15:562
2400923026,0sleep30-21swapper/319:18:053
339960,0migration/36820-21cpuspeed_turbos00:09:273
339960,0migration/33543-21sh22:33:303
339960,0migration/319139-21sh22:24:173
339960,0migration/316851-21munin-node22:19:363
339960,0migration/313362-21sh21:41:093
29805060,0irq/28-eth0-rx-6314-21runrttasks23:07:293
29805060,0irq/28-eth0-rx-2964-21perl00:44:283
29805060,0irq/28-eth0-rx-11027-21yum23:49:433
241789960,0cyclictest0-21swapper/222:47:352
241769965,0cyclictest7367-21ps21:39:310
241769960,0cyclictest0-21swapper/000:34:270
8305050,0irq/26-0000:00:20581-21latency_hist19:39:142
339950,0migration/39692-21munin-node23:14:303
339950,0migration/3649-21kthreadcore00:04:313
339950,0migration/332695-21fschecks_time20:54:273
339950,0migration/332668-21munin-node20:09:273
339950,0migration/332399-21cpuspeed_turbos23:09:263
339950,0migration/327951-21latency_hist23:44:153
339950,0migration/325515-21kthreadcore21:49:323
339950,0migration/324803-21cpuspeed_turbos20:04:263
339950,0migration/317339-21aten_r1power_en19:59:253
339950,0migration/31723-21taskset00:43:413
339950,0migration/317001-21kthreadcore20:19:323
339950,0migration/316974-21taskset00:34:013
339950,0migration/310073-21taskset20:38:433
329950,0watchdog/33094-21ls23:29:303
329950,0watchdog/329454-21iostat20:29:293
329950,0watchdog/321718-21telnet23:59:263
329950,0watchdog/315238-21ps21:04:293
329950,0watchdog/312182-21sh22:38:333
29815050,0irq/29-eth0-tx-6771-21sort22:54:292
29815050,0irq/29-eth0-tx-31691-21munin-node20:09:370
29815050,0irq/29-eth0-tx-31179-21if_eth1.322:49:312
29815050,0irq/29-eth0-tx-30186-21ssh00:19:382
29815050,0irq/29-eth0-tx-27831-21munin-node22:29:312
29815050,0irq/29-eth0-tx-25630-21cut23:59:322
29815050,0irq/29-eth0-tx-18345-21python21:24:392
29815050,0irq/29-eth0-tx-15320-21df_inode22:59:242
29815050,0irq/29-eth0-tx-15239-21munin-node00:14:392
29815050,0irq/29-eth0-tx-13791-21munin-node20:19:270
29815050,0irq/29-eth0-tx-11250-21ssh22:35:542
29815050,0irq/29-eth0-tx-0-21swapper/223:50:192
29815050,0irq/29-eth0-tx-0-21swapper/223:47:482
29815050,0irq/29-eth0-tx-0-21swapper/223:29:072
29815050,0irq/29-eth0-tx-0-21swapper/223:19:262
29815050,0irq/29-eth0-tx-0-21swapper/222:04:312
29815050,0irq/29-eth0-tx-0-21swapper/221:45:452
29815050,0irq/29-eth0-tx-0-21swapper/221:34:282
29815050,0irq/29-eth0-tx-0-21swapper/200:47:012
29815050,0irq/29-eth0-tx-0-21swapper/200:39:442
29815050,0irq/29-eth0-tx-0-21swapper/200:26:512
29815050,0irq/29-eth0-tx-0-21swapper/020:39:380
29815050,0irq/29-eth0-tx-0-21swapper/020:04:250
29815050,0irq/29-eth0-tx-0-21swapper/019:49:270
29805050,0irq/28-eth0-rx-25732-21date23:24:153
29805050,0irq/28-eth0-rx-23145-21missed_timers23:19:343
29805050,0irq/28-eth0-rx-22408-21munin-node21:29:313
29805050,0irq/28-eth0-rx-21770-21ssh23:00:063
29805050,0irq/28-eth0-rx-18101-21kthreadcore22:39:343
29805050,0irq/28-eth0-rx-15595-21kthreadcore21:24:343
29805050,0irq/28-eth0-rx-0-21swapper/322:57:283
29805050,0irq/28-eth0-rx-0-21swapper/322:45:223
29805050,0irq/28-eth0-rx-0-21swapper/321:55:283
29805050,0irq/28-eth0-rx-0-21swapper/321:19:333
29805050,0irq/28-eth0-rx-0-21swapper/300:34:223
29805050,0irq/28-eth0-rx-0-21swapper/300:19:333
259950,0migration/232541-21fschecks_time20:09:262
259950,0migration/216930-21sh00:33:542
259950,0migration/215549-21sh22:01:062
241789955,0cyclictest0-21swapper/223:36:002
241789954,0cyclictest3571-21lldpd20:41:472
241789954,0cyclictest27103-21ps23:04:322
241789950,0cyclictest0-21swapper/221:39:572
241789950,0cyclictest0-21swapper/200:34:202
241779955,0cyclictest0-21swapper/123:18:071
241779955,0cyclictest0-21swapper/122:45:001
241779955,0cyclictest0-21swapper/122:31:171
241779950,0cyclictest0-21swapper/123:58:471
241779950,0cyclictest0-21swapper/123:49:481
241779950,0cyclictest0-21swapper/122:52:251
241779950,0cyclictest0-21swapper/100:19:461
241769950,0cyclictest0-21swapper/023:26:580
241769950,0cyclictest0-21swapper/023:13:340
241769950,0cyclictest0-21swapper/022:10:400
241769950,0cyclictest0-21swapper/000:41:320
241769950,0cyclictest0-21swapper/000:23:150
241769950,0cyclictest0-21swapper/000:12:040
249950,0watchdog/229161-21perl21:14:292
179950,0migration/16063-21unixbench-2d20:54:381
179950,0migration/15585-21sh20:09:351
179950,0migration/125677-21aten2.4-expect22:09:251
179950,0migration/112488-21latency00:09:341
169950,0watchdog/132339-21cpu23:09:261
149950,0migration/0982-21munin-node00:24:290
149950,0migration/07530-21sh22:54:310
149950,0migration/05977-21timerandwakeup20:54:380
149950,0migration/04142-21idleruntime20:34:300
149950,0migration/04035-21kthreadcore21:54:320
149950,0migration/0348-21kthreadcore21:34:320
149950,0migration/028718-21fschecks_time23:44:280
149950,0migration/028421-21kthreadcore19:19:310
149950,0migration/027249-21kthreadcore23:59:330
149950,0migration/02579-21df_abs00:44:270
149950,0migration/025054-21sh23:22:560
149950,0migration/024927-21munin-node20:49:260
149950,0migration/018206-21kthreadcore21:44:310
149950,0migration/016734-21kthreadcore23:54:340
149950,0migration/016454-21kthreadcore23:34:330
8305040,0irq/26-0000:00:0-21swapper/220:04:142
339940,0migration/3440-21sh00:24:283
339940,0migration/332036-21kthreadcore19:44:313
339940,0migration/32919-21ksmtuned21:17:513
339940,0migration/327572-21kthreadcore22:09:323
339940,0migration/325484-21kthreadcore19:39:313
339940,0migration/324558-21kthreadcore21:09:303
339940,0migration/324442-21kthreadcore20:24:313
339940,0migration/318143-21kthreadcore00:14:333
339940,0migration/314665-21latency_hist21:44:143
329940,0watchdog/36723-21expr19:29:253
329940,0watchdog/311544-21interrupts20:39:293
329940,0watchdog/30-21swapper/323:54:343
329940,0watchdog/30-21swapper/320:59:293
29815040,0irq/29-eth0-tx-32044-21tail21:54:252
29815040,0irq/29-eth0-tx-0-21swapper/223:39:242
29815040,0irq/29-eth0-tx-0-21swapper/223:30:212
29815040,0irq/29-eth0-tx-0-21swapper/223:11:372
29815040,0irq/29-eth0-tx-0-21swapper/222:39:372
29815040,0irq/29-eth0-tx-0-21swapper/222:19:202
29815040,0irq/29-eth0-tx-0-21swapper/222:14:162
29815040,0irq/29-eth0-tx-0-21swapper/221:29:202
29815040,0irq/29-eth0-tx-0-21swapper/200:09:182
29815040,0irq/29-eth0-tx-0-21swapper/200:04:252
29815040,0irq/29-eth0-tx-0-21swapper/020:24:290
29815040,0irq/29-eth0-tx-0-21swapper/019:34:300
29815040,0irq/29-eth0-tx-0-21swapper/019:29:180
29805040,0irq/28-eth0-rx-0-21swapper/323:39:353
29805040,0irq/28-eth0-rx-0-21swapper/323:34:413
29805040,0irq/28-eth0-rx-0-21swapper/322:49:403
29805040,0irq/28-eth0-rx-0-21swapper/322:14:223
29805040,0irq/28-eth0-rx-0-21swapper/322:04:303
29805040,0irq/28-eth0-rx-0-21swapper/321:34:283
29805040,0irq/28-eth0-rx-0-21swapper/319:39:133
259940,0migration/27617-21kthreadcore21:19:332
259940,0migration/23665-21kthreadcore19:24:322
259940,0migration/231676-21ntp_offset22:09:352
259940,0migration/229863-21kthreadcore20:49:332
259940,0migration/228493-21kthreadcore19:19:312
241789943,0cyclictest7964-21awk20:59:282
241789943,0cyclictest3571-21lldpd21:06:472
241789943,0cyclictest3571-21lldpd20:30:172
241789943,0cyclictest3524-21snmpd20:26:232
241789943,0cyclictest29024-21awk19:44:282
241789943,0cyclictest24523-21awk21:49:312
241789943,0cyclictest20343-21awk22:24:312
241789943,0cyclictest13560-21sadc20:19:142
241789940,0cyclictest0-21swapper/219:59:512
241779944,0cyclictest0-21swapper/121:35:101
241779943,0cyclictest3524-21snmpd23:36:411
241779943,0cyclictest3524-21snmpd23:24:561
241779943,0cyclictest3524-21snmpd23:06:111
241779943,0cyclictest3524-21snmpd22:20:551
241779943,0cyclictest3524-21snmpd21:56:241
241779943,0cyclictest3524-21snmpd21:26:391
241779943,0cyclictest3524-21snmpd21:15:241
241779943,0cyclictest3524-21snmpd21:01:241
241779943,0cyclictest3524-21snmpd20:47:231
241779943,0cyclictest3524-21snmpd20:31:381
241779943,0cyclictest3524-21snmpd00:27:411
241779943,0cyclictest3524-21snmpd00:17:561
241779943,0cyclictest25733-21sadc00:39:151
241779943,0cyclictest22385-21awk21:09:291
241779943,0cyclictest14945-21awk20:19:301
241769944,0cyclictest0-21swapper/023:41:280
241769944,0cyclictest0-21swapper/021:32:500
241769943,0cyclictest3571-21lldpd22:39:500
241769943,0cyclictest3571-21lldpd00:07:510
241769943,0cyclictest3524-21snmpd22:35:400
241769943,0cyclictest3524-21snmpd21:01:390
241769943,0cyclictest3250-21irqbalance23:05:410
241769943,0cyclictest3250-21irqbalance22:24:210
241769943,0cyclictest3250-21irqbalance22:14:410
241769943,0cyclictest3250-21irqbalance22:05:010
241769943,0cyclictest3250-21irqbalance21:50:210
241769943,0cyclictest3250-21irqbalance21:19:210
241769943,0cyclictest3250-21irqbalance21:10:010
241769943,0cyclictest3250-21irqbalance21:04:210
241769943,0cyclictest3250-21irqbalance20:29:300
241769943,0cyclictest3250-21irqbalance20:17:000
241769943,0cyclictest3250-21irqbalance19:59:200
241769943,0cyclictest18629-21awk20:44:280
241769943,0cyclictest11808-21irqcore22:19:310
249940,0watchdog/28711-21kthreadcore20:34:332
249940,0watchdog/217745-21egrep20:44:252
249940,0watchdog/214959-21grep23:54:342
249940,0watchdog/20-21swapper/223:14:262
249940,0watchdog/20-21swapper/219:29:252
179940,0migration/19719-21taskset19:52:421
179940,0migration/19125-21kthreadcore20:14:321
179940,0migration/17125-21kthreadcore00:44:331
179940,0migration/13204-21irqcore22:14:311
179940,0migration/13120-21aten_r1power_cu20:34:261
179940,0migration/129276-21kthreadcore19:19:311
179940,0migration/127519-21kthreadcore20:04:311
179940,0migration/126777-21fschecks_time00:39:311
179940,0migration/120148-21kthreadcore23:19:321
179940,0migration/119991-21kthreadcore22:04:311
179940,0migration/119836-21fschecks_count23:39:261
179940,0migration/119215-21timerandwakeup22:39:411
179940,0migration/11770-21sendmail_mailtr19:44:341
179940,0migration/117625-21kthreadcore19:34:311
179940,0migration/114292-21kthreadcore19:54:311
179940,0migration/112088-21missed_timers21:39:341
179940,0migration/111172-21fschecks_time20:39:271
179940,0migration/110375-21kthreadcore19:29:301
169940,0watchdog/17035-21kthreadcore21:19:331
169940,0watchdog/16314-21runrttasks00:05:141
169940,0watchdog/13095-21sort23:29:301
169940,0watchdog/13059-21diskmemload23:01:101
169940,0watchdog/123980-21kthreadcore22:24:331
169940,0watchdog/122100-21munin-node20:24:291
169940,0watchdog/121702-21ssh23:59:261
169940,0watchdog/113161-21ssh22:55:061
169940,0watchdog/112468-21cut21:59:331
169940,0watchdog/10-21swapper/122:34:411
169940,0watchdog/10-21swapper/121:04:291
149940,0migration/05057-21latency19:24:320
149940,0migration/04497-21sh22:50:000
149940,0migration/0396-21kthreadcore21:14:340
149940,0migration/029966-21kthreadcore19:44:300
149940,0migration/024681-21kthreadcore19:39:300
149940,0migration/021775-21df_abs22:44:290
149940,0migration/021450-21proc_pri00:14:370
149940,0migration/019279-21kthreadcore22:59:290
149940,0migration/015259-21timerwakeupswit00:29:400
149940,0migration/014844-21timerwakeupswit21:59:410
149940,0migration/013736-21kthreadcore19:54:310
8305030,0irq/26-0000:00:0-21swapper/220:19:282
329930,0watchdog/30-21swapper/321:59:333
329930,0watchdog/30-21swapper/320:49:253
329930,0watchdog/30-21swapper/320:44:253
329930,0watchdog/30-21swapper/319:49:293
329930,0watchdog/30-21swapper/319:25:173
29805030,0irq/28-eth0-rx-0-21swapper/320:14:263
29805030,0irq/28-eth0-rx-0-21swapper/319:19:163
241789932,0cyclictest17174-21grep19:34:312
241789932,0cyclictest12338-21grep19:54:302
241789930,0cyclictest0-21swapper/220:57:232
241779932,0cyclictest9871-21awk00:29:301
241779932,0cyclictest3524-21snmpd19:59:241
241779932,0cyclictest3524-21snmpd19:27:531
241779932,0cyclictest32450-21tr23:44:331
241779932,0cyclictest25865-21awk20:49:301
241779932,0cyclictest23343-21munin-node21:49:281
241769933,0cyclictest0-21swapper/023:51:530
241769933,0cyclictest0-21swapper/023:17:400
241769932,0cyclictest3059-21diskmemload23:30:370
241769932,0cyclictest28935-21awk22:29:310
249930,0watchdog/20-21swapper/221:09:372
249930,0watchdog/20-21swapper/219:49:292
179930,0migration/122336-21sh21:47:161
169930,0watchdog/10-21swapper/121:29:171
329920,0watchdog/30-21swapper/319:54:253
241769921,0cyclictest11964-21cat21:24:140
169920,0watchdog/10-21swapper/119:39:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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