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2025-12-15 - 19:18
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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 Mon Dec 15, 2025 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
789824332,0sleep00-21swapper/007:07:230
779623926,0sleep10-21swapper/107:06:121
777523929,0sleep20-21swapper/207:05:572
804923728,0sleep30-21swapper/307:09:103
82119960,0cyclictest0-21swapper/111:43:531
82109960,0cyclictest0-21swapper/012:08:140
4160,0ktimersoftd/026864-21port_sshpriv09:45:330
339960,0migration/32990-21sh12:11:053
339960,0migration/326775-21sh09:11:533
339960,0migration/323299-21sh10:01:543
339960,0migration/314666-21sh10:34:013
29815060,0irq/29-eth0-tx-8466-21cut11:40:312
29805060,0irq/28-eth0-rx-17624-21grep12:20:303
29805060,0irq/28-eth0-rx-11809-21irqcore11:25:283
29805060,0irq/28-eth0-rx-0-21swapper/311:40:313
149960,0migration/0892-21sh10:08:430
149960,0migration/023751-21kthreadcore10:55:320
149960,0migration/021329-21needreboot11:10:320
8305050,0irq/26-0000:00:8824-21cut08:40:132
8305050,0irq/26-0000:00:25912-21unixbench_multi12:05:402
8305050,0irq/26-0000:00:0-21swapper/212:20:202
82129955,0cyclictest0-21swapper/209:25:332
82119955,0cyclictest0-21swapper/109:19:001
82119954,0cyclictest3524-21snmpd08:37:201
82119954,0cyclictest3524-21snmpd08:33:191
82119954,0cyclictest3524-21snmpd08:13:191
82119950,0cyclictest0-21swapper/112:12:441
82119950,0cyclictest0-21swapper/109:47:511
82109955,0cyclictest0-21swapper/012:18:290
82109955,0cyclictest0-21swapper/010:17:240
82109955,0cyclictest0-21swapper/009:57:320
82109955,0cyclictest0-21swapper/007:10:160
82109950,0cyclictest11207-21basename09:40:140
82109950,0cyclictest0-21swapper/011:37:490
339950,0migration/39283-21munin-node08:40:263
339950,0migration/36108-21fschecks_time12:15:293
339950,0migration/33906-21munin-node08:10:313
339950,0migration/332477-21needreboot07:45:303
339950,0migration/331769-21kthreadcore10:25:313
339950,0migration/328915-21ksmtuned09:15:243
339950,0migration/328645-21sh10:23:583
339950,0migration/32752-21kthreadcore07:25:313
339950,0migration/32501-21diskmemload10:45:293
339950,0migration/325008-21gltestperf11:50:283
339950,0migration/322948-21taskset11:12:373
339950,0migration/316978-21irqcore07:15:303
339950,0migration/316078-21aten_r1power_en08:45:253
339950,0migration/315811-21kthreadcore12:00:323
339950,0migration/314661-21taskset09:58:123
339950,0migration/313463-21gltestperf09:05:283
339950,0migration/311972-21taskset08:18:323
329950,0watchdog/33186-21kthreadcore08:55:323
329950,0watchdog/328771-21sh11:35:163
329950,0watchdog/324831-21ssh09:30:163
329950,0watchdog/323087-21kthreadcore10:55:323
329950,0watchdog/315639-21fschecks_time11:45:283
329950,0watchdog/30-21swapper/310:05:163
29815050,0irq/29-eth0-tx-30914-21cut10:40:352
29815050,0irq/29-eth0-tx-30315-21unixbench_singl12:25:392
29815050,0irq/29-eth0-tx-29544-21munin-node10:25:292
29815050,0irq/29-eth0-tx-22110-21grep11:30:302
29815050,0irq/29-eth0-tx-21273-21perl10:20:262
29815050,0irq/29-eth0-tx-13681-21ssh09:56:062
29815050,0irq/29-eth0-tx-13533-21ssh09:22:132
29815050,0irq/29-eth0-tx-11694-21grep10:30:322
29815050,0irq/29-eth0-tx-0-21swapper/211:55:262
29815050,0irq/29-eth0-tx-0-21swapper/210:51:252
29815050,0irq/29-eth0-tx-0-21swapper/008:37:190
29815050,0irq/29-eth0-tx-0-21swapper/007:45:260
29805050,0irq/28-eth0-rx-3997-21cut11:20:313
29805050,0irq/28-eth0-rx-3598-21kthreadcore10:10:313
29805050,0irq/28-eth0-rx-32607-21cat09:50:293
29805050,0irq/28-eth0-rx-31481-21ssh12:28:013
29805050,0irq/28-eth0-rx-30403-21iostat_ios11:00:293
29805050,0irq/28-eth0-rx-28452-21tr10:40:323
29805050,0irq/28-eth0-rx-19264-21ssh12:05:203
29805050,0irq/28-eth0-rx-19061-21cut08:00:313
29805050,0irq/28-eth0-rx-18928-21awk07:38:223
29805050,0irq/28-eth0-rx-15679-21cpu09:25:253
29805050,0irq/28-eth0-rx-11914-21df_inode09:40:253
29805050,0irq/28-eth0-rx-0-21swapper/312:35:273
29805050,0irq/28-eth0-rx-0-21swapper/312:30:323
29805050,0irq/28-eth0-rx-0-21swapper/311:18:463
29805050,0irq/28-eth0-rx-0-21swapper/311:05:233
29805050,0irq/28-eth0-rx-0-21swapper/310:35:543
29805050,0irq/28-eth0-rx-0-21swapper/310:16:213
29805050,0irq/28-eth0-rx-0-21swapper/309:48:463
29805050,0irq/28-eth0-rx-0-21swapper/307:30:383
259950,0migration/29975-21sh09:37:482
259950,0migration/23536-21sh09:16:092
259950,0migration/227348-21kthreadcore11:15:322
259950,0migration/225495-21kthreadcore10:55:332
259950,0migration/222497-21sh10:36:072
259950,0migration/221355-21timerandwakeup11:45:402
259950,0migration/219383-21aten_r1power_en07:40:242
259950,0migration/218686-21timerandwakeup08:20:372
259950,0migration/21818-21kthreadcore11:35:332
259950,0migration/215836-21ntp_offset12:35:342
259950,0migration/21455-21sh09:34:512
259950,0migration/21337-21latency_hist10:45:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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