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2026-08-13 - 07:02
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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 Thu Aug 13, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1059626463,0sleep20-21swapper/219:28:272
1059626463,0sleep20-21swapper/219:28:272
1061523728,0sleep10-21swapper/119:28:421
1061523728,0sleep10-21swapper/119:28:421
1061223424,0sleep30-21swapper/319:28:403
1061223424,0sleep30-21swapper/319:28:403
1049322824,0sleep00-21swapper/019:27:120
1049322824,0sleep00-21swapper/019:27:120
108199999,0cyclictest3524-21snmpd20:38:530
4160,0ktimersoftd/00-21swapper/000:51:120
339960,0migration/39474-21sh22:16:033
339960,0migration/33220-21sh23:50:123
339960,0migration/327739-21sh22:29:383
339960,0migration/312341-21munin-node22:55:233
339960,0migration/312155-21idleruntime22:20:213
29815060,0irq/29-eth0-tx-29150-21munin-node20:05:190
29815060,0irq/29-eth0-tx-14752-21munin-node19:55:290
29805060,0irq/28-eth0-rx-16636-21perl21:45:193
29805060,0irq/28-eth0-rx-12648-21fschecks_time23:55:183
149960,0migration/08125-21sh21:57:140
149960,0migration/06931-21idleruntime-cro21:40:040
149960,0migration/029492-21sh21:32:180
149960,0migration/027689-21sh22:29:300
149960,0migration/025806-21kthreadcore20:45:220
149960,0migration/010233-21kthreadcore22:55:210
108309960,0cyclictest0-21swapper/222:54:392
339950,0migration/39564-21irqrtprio23:15:203
339950,0migration/39313-21fschecks_count00:50:203
339950,0migration/38800-21fschecks_time21:20:173
339950,0migration/37048-21unixbench_multi20:30:283
339950,0migration/35304-21munin-node00:10:153
339950,0migration/35283-21runrttasks00:26:043
339950,0migration/35260-21munin-node20:55:203
339950,0migration/34186-21kthreadcore21:15:233
339950,0migration/3398-21kthreadcore20:05:233
339950,0migration/332744-21kthreadcore20:50:253
339950,0migration/331747-21kthreadcore22:10:223
339950,0migration/331102-21taskset00:41:393
339950,0migration/330789-21sh21:35:063
339950,0migration/329550-21fschecks_count00:05:173
339950,0migration/329471-21kthreadcore21:50:233
339950,0migration/327080-21kthreadcore20:00:223
339950,0migration/322952-21kthreadcore19:35:223
339950,0migration/321848-21ksmtuned21:26:533
339950,0migration/319704-21if_eth1.223:40:213
339950,0migration/315619-21latency_hist21:45:043
339950,0migration/313568-21fschecks_count22:40:173
339950,0migration/311691-21taskset22:37:093
339950,0migration/311458-21irqrtprio23:35:213
339950,0migration/310342-21kthreadcore19:50:223
329950,0watchdog/39994-21netstat20:10:233
329950,0watchdog/38812-21awk20:35:193
329950,0watchdog/327753-21ssh00:02:323
329950,0watchdog/325285-21ssh23:25:163
329950,0watchdog/321167-21python20:40:273
329950,0watchdog/317355-21chrt22:04:273
329950,0watchdog/30-21swapper/323:10:163
329950,0watchdog/30-21swapper/321:55:513
329950,0watchdog/30-21swapper/300:15:243
29815050,0irq/29-eth0-tx-29793-21perl00:05:172
29815050,0irq/29-eth0-tx-0-21swapper/019:40:240
29815050,0irq/29-eth0-tx-0-21swapper/019:32:460
29805050,0irq/28-eth0-rx-5870-21cut23:30:213
29805050,0irq/28-eth0-rx-32544-21aten_r1power_cu00:45:163
29805050,0irq/28-eth0-rx-30278-21kthreadcore20:25:223
29805050,0irq/28-eth0-rx-23554-21irqcore00:20:213
29805050,0irq/28-eth0-rx-19929-21cat00:55:233
29805050,0irq/28-eth0-rx-16238-21irqrtprio23:00:213
29805050,0irq/28-eth0-rx-0-21swapper/323:45:223
29805050,0irq/28-eth0-rx-0-21swapper/323:05:223
29805050,0irq/28-eth0-rx-0-21swapper/322:55:033
29805050,0irq/28-eth0-rx-0-21swapper/322:08:133
29805050,0irq/28-eth0-rx-0-21swapper/321:05:163
29805050,0irq/28-eth0-rx-0-21swapper/319:40:143
29805050,0irq/28-eth0-rx-0-21swapper/300:35:403
29805050,0irq/28-eth0-rx-0-21swapper/300:31:373
259950,0migration/226414-21fschecks_time20:25:172
19150,0ktimersoftd/10-21swapper/120:09:541
19150,0ktimersoftd/10-21swapper/119:34:541
179950,0migration/126455-21aten_r1power_po22:10:151
179950,0migration/124614-21kthreadcore00:00:221
179950,0migration/121520-21ksmtuned19:57:521
179950,0migration/112383-21fschecks_count23:55:171
169950,0watchdog/116782-21expr21:45:191
169950,0watchdog/10-21swapper/123:26:521
149950,0migration/0975-21kthreadcore22:50:220
149950,0migration/08493-21kthreadcore23:50:230
149950,0migration/05210-21idleruntime20:55:190
149950,0migration/04140-21kthreadcore23:10:220
149950,0migration/031827-21kthreadcore20:50:240
149950,0migration/030078-21kthreadcore21:50:230
149950,0migration/029799-21sh00:23:130
149950,0migration/02979-21kthreadcore19:45:220
149950,0migration/029026-21kthreadcore21:10:210
149950,0migration/028039-21latency_hist22:30:040
149950,0migration/02758-21irqcore23:30:200
149950,0migration/027557-21kthreadcore23:25:220
149950,0migration/025539-21taskset00:59:460
149950,0migration/025412-21sh22:08:090
149950,0migration/022591-21taskset21:45:360
149950,0migration/020350-21sh00:00:110
149950,0migration/019488-21fschecks_time21:05:170
149950,0migration/018701-21cpu20:20:160
149950,0migration/018034-21run-parts22:21:040
149950,0migration/016447-21gltestperf00:35:200
149950,0migration/015642-21sh23:17:460
149950,0migration/014381-21kthreadcore23:55:220
149950,0migration/013505-21sendmail_mailqu21:40:260
149950,0migration/012783-21sh00:13:220
149950,0migration/011379-21latency_hist21:00:040
149950,0migration/010775-21kthreadcore00:30:220
108309955,0cyclictest0-21swapper/223:56:372
108309955,0cyclictest0-21swapper/222:23:362
108309955,0cyclictest0-21swapper/222:12:432
108309955,0cyclictest0-21swapper/200:44:332
108309955,0cyclictest0-21swapper/200:01:302
108309954,0cyclictest16212-21awk21:25:182
108309950,0cyclictest0-21swapper/223:05:322
108309950,0cyclictest0-21swapper/222:58:172
8305040,0irq/26-0000:00:0-21swapper/321:30:043
8305040,0irq/26-0000:00:0-21swapper/223:20:052
8305040,0irq/26-0000:00:0-21swapper/222:05:182
339940,0migration/312118-21fschecks_time20:15:173
329940,0watchdog/30-21swapper/321:13:033
329940,0watchdog/30-21swapper/320:20:193
329940,0watchdog/30-21swapper/319:45:233
29815040,0irq/29-eth0-tx-8146-21munin-node23:15:162
29815040,0irq/29-eth0-tx-0-21swapper/223:50:232
29815040,0irq/29-eth0-tx-0-21swapper/200:15:242
29815040,0irq/29-eth0-tx-0-21swapper/021:20:230
29815040,0irq/29-eth0-tx-0-21swapper/020:10:180
29815040,0irq/29-eth0-tx-0-21swapper/020:00:170
29815040,0irq/29-eth0-tx-0-21swapper/019:38:200
29805040,0irq/28-eth0-rx-16070-21kthreadcore21:00:213
29805040,0irq/28-eth0-rx-0-21swapper/323:20:243
29805040,0irq/28-eth0-rx-0-21swapper/322:45:163
29805040,0irq/28-eth0-rx-0-21swapper/322:30:163
29805040,0irq/28-eth0-rx-0-21swapper/320:45:253
27140,0ktimersoftd/20-21swapper/200:28:472
259940,0migration/27907-21sh00:48:082
259940,0migration/27386-21kthreadcore20:55:232
259940,0migration/23757-21munin-node22:15:212
259940,0migration/228748-21kthreadcore23:25:222
259940,0migration/228178-21munin-node23:45:212
259940,0migration/224668-21kthreadcore00:20:222
259940,0migration/220902-21munin-node22:25:212
259940,0migration/214365-21kthreadcore19:30:212
259940,0migration/210092-21kthreadcore21:20:202
249940,0watchdog/28851-21munin-node00:50:282
249940,0watchdog/27091-21kthreadcore22:35:192
249940,0watchdog/232151-21cpuspeed_turbos23:10:162
249940,0watchdog/20-21swapper/222:40:192
249940,0watchdog/20-21swapper/221:50:232
249940,0watchdog/20-21swapper/221:45:192
249940,0watchdog/20-21swapper/220:20:192
179940,0migration/19835-21kthreadcore00:10:221
179940,0migration/14691-21kthreadcore23:30:211
179940,0migration/14589-21cpuspeed_turbos22:35:141
179940,0migration/13760-21fschecks_count23:50:181
179940,0migration/13226-21kthreadcore23:10:211
179940,0migration/131768-21kthreadcore23:45:231
179940,0migration/131590-21sendmail_mailqu19:40:241
179940,0migration/131104-21kthreadcore22:30:211
179940,0migration/129568-21kthreadcore20:25:211
179940,0migration/128965-21unixbench_multi21:30:301
179940,0migration/128891-21kthreadcore21:50:231
179940,0migration/124063-21fschecks_time23:05:181
179940,0migration/123608-21irqrtprio20:45:211
179940,0migration/119629-21idleruntime21:05:181
179940,0migration/11633-21kthreadcore20:50:251
179940,0migration/113940-21ntp_offset21:20:231
179940,0migration/112039-21kthreadcore23:15:211
179940,0migration/111739-21kthreadcore23:35:211
179940,0migration/11167-21fschecks_time20:30:161
179940,0migration/110891-21taskset20:56:291
169940,0watchdog/19995-21awk20:10:231
169940,0watchdog/17647-21ssh21:55:511
169940,0watchdog/15279-21kthreadcore19:45:231
169940,0watchdog/131738-21rm00:43:321
169940,0watchdog/117201-21kthreadcore00:15:241
169940,0watchdog/115023-21ssh00:34:321
169940,0watchdog/10-21swapper/122:40:271
169940,0watchdog/10-21swapper/119:50:191
149940,0migration/04063-21irqrtprio22:15:220
149940,0migration/026699-21kthreadcore00:40:230
149940,0migration/019919-21kthreadcore21:25:210
149940,0migration/01473-21fschecks_time21:15:190
149940,0migration/014603-21kthreadcore23:35:220
149940,0migration/012982-21kthreadcore20:15:200
108309944,0cyclictest22139-21diskmemload21:35:502
108309943,0cyclictest8578-21awk19:50:192
108309943,0cyclictest8010-21awk00:30:192
108309943,0cyclictest6195-21awk00:10:192
108309943,0cyclictest5035-21awk20:10:192
108309943,0cyclictest3571-21lldpd23:30:202
108309943,0cyclictest3571-21lldpd21:56:202
108309943,0cyclictest3571-21lldpd21:41:502
108309943,0cyclictest3571-21lldpd20:19:502
108309943,0cyclictest3571-21lldpd20:07:162
108309943,0cyclictest3571-21lldpd19:42:462
108309943,0cyclictest3571-21lldpd00:36:512
108309943,0cyclictest3524-21snmpd22:49:142
108309943,0cyclictest3524-21snmpd22:00:292
108309943,0cyclictest3524-21snmpd20:42:432
108309943,0cyclictest3524-21snmpd20:37:582
108309943,0cyclictest26946-21awk21:10:192
108309943,0cyclictest23054-21awk20:00:192
108309943,0cyclictest19301-21awk19:35:192
108309943,0cyclictest18490-21awk00:55:212
108309943,0cyclictest1612-21awk20:30:192
108309943,0cyclictest15987-21awk23:00:202
108309943,0cyclictest1311-21awk19:45:192
108309943,0cyclictest12596-21awk21:00:192
108309943,0cyclictest11086-21awk23:35:192
108309940,0cyclictest28166-21munin-node22:30:172
108309940,0cyclictest18529-21munin-node23:40:292
108259943,0cyclictest8842-21awk20:35:191
108259943,0cyclictest7288-21awk22:55:181
108259943,0cyclictest3571-21lldpd23:41:501
108259943,0cyclictest3571-21lldpd22:06:501
108259943,0cyclictest3571-21lldpd22:01:501
108259943,0cyclictest3571-21lldpd21:15:201
108259943,0cyclictest3571-21lldpd00:52:221
108259943,0cyclictest3524-21snmpd20:40:581
108259943,0cyclictest3524-21snmpd00:35:311
108259943,0cyclictest3250-21irqbalance22:53:111
108259943,0cyclictest3250-21irqbalance22:25:411
108259943,0cyclictest3250-21irqbalance22:23:211
108259943,0cyclictest3250-21irqbalance21:40:111
108259943,0cyclictest3250-21irqbalance21:28:511
108259943,0cyclictest3250-21irqbalance00:55:111
108259943,0cyclictest3250-21irqbalance00:25:211
108259943,0cyclictest23255-21awk00:20:201
108259943,0cyclictest22542-21awk22:45:191
108259943,0cyclictest15863-21awk23:00:191
108259943,0cyclictest1250-21awk00:45:211
108259943,0cyclictest12387-21awk20:15:191
108259941,0cyclictest22139-21diskmemload21:35:531
108199943,0cyclictest3571-21lldpd22:04:500
108199943,0cyclictest3524-21snmpd20:26:430
108199943,0cyclictest27508-21awk22:10:190
108199943,0cyclictest15894-21awk23:00:200
108199940,0cyclictest0-21swapper/000:07:410
329930,0watchdog/30-21swapper/319:55:153
329930,0watchdog/30-21swapper/319:30:193
29815030,0irq/29-eth0-tx-0-21swapper/020:30:140
29815030,0irq/29-eth0-tx-0-21swapper/019:50:150
249930,0watchdog/20-21swapper/221:05:192
179930,0migration/124875-21runrttasks19:36:361
169930,0watchdog/122996-21if_err_eth120:00:191
169930,0watchdog/10-21swapper/122:15:231
169930,0watchdog/10-21swapper/120:20:191
169930,0watchdog/10-21swapper/100:05:201
108309932,0cyclictest3571-21lldpd20:45:502
108309932,0cyclictest15880-21awk19:55:192
108309932,0cyclictest1382-21cut21:15:192
108309930,0cyclictest416-21cut20:50:252
108309930,0cyclictest24519-21cut21:30:222
108259932,0cyclictest3571-21lldpd21:10:201
108259932,0cyclictest3524-21snmpd21:03:281
108259930,0cyclictest17578-21perl23:20:171
108199932,0cyclictest4736-21sensors00:25:320
108199932,0cyclictest14785-21awk00:15:210
108199930,0cyclictest852-21perl00:45:190
108199930,0cyclictest17516-21perl23:20:170
108199930,0cyclictest15696-21perl20:40:180
108199930,0cyclictest13828-21perl22:40:180
108199930,0cyclictest10604-21port_sshpriv22:35:230
108199930,0cyclictest0-21swapper/023:45:230
108199920,0cyclictest0-21swapper/023:40:180
108199920,0cyclictest0-21swapper/023:05:160
108199920,0cyclictest0-21swapper/022:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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