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2026-05-09 - 09:51
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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 Sat May 09, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2905726160,0sleep00-21swapper/019:20:310
2845924140,0sleep10-21swapper/119:17:361
2909223627,0sleep30-21swapper/319:20:543
2888223127,0sleep20-21swapper/219:18:292
8305070,0irq/26-0000:00:22898-21sa123:22:132
8305070,0irq/26-0000:00:22508-21munin-run22:07:122
339960,0migration/39347-21sh23:49:533
339960,0migration/3742-21kthreadcore22:12:303
339960,0migration/331084-21sh22:12:063
339960,0migration/329175-21kthreadcore21:32:283
339960,0migration/328078-21sh21:49:563
339960,0migration/321937-21runrttasks00:33:293
339960,0migration/320123-21idleruntime23:57:283
339960,0migration/318656-21munin-node21:27:293
339960,0migration/318201-21sh22:41:363
339960,0migration/318182-21irqrtprio23:37:293
339960,0migration/31395-21dump-pmu-power23:47:133
29815060,0irq/29-eth0-tx-0-21swapper/020:47:300
292749966,0cyclictest0-21swapper/222:07:252
292729965,0cyclictest0-21swapper/000:03:140
27160,0ktimersoftd/20-21swapper/200:13:332
149960,0migration/027250-21sh00:01:460
149960,0migration/02594-21latency_hist21:37:120
149960,0migration/023504-21sh00:37:160
149960,0migration/011615-21sh22:56:020
8305050,0irq/26-0000:00:0-21swapper/319:42:383
339950,0migration/38362-21kthreadcore20:12:303
339950,0migration/38163-21aten_r1power_cu19:52:233
339950,0migration/3389-21kthreadcore22:47:313
339950,0migration/331185-21kthreadcore19:22:293
339950,0migration/330869-21kthreadcore21:12:313
339950,0migration/329982-21kthreadcore00:02:313
339950,0migration/326798-21kthreadcore22:27:293
339950,0migration/326285-21kthreadcore00:17:313
339950,0migration/324478-21gltestperf00:37:263
339950,0migration/321922-21runrttasks22:05:413
339950,0migration/319752-21munin-node21:07:263
339950,0migration/319139-21switchtime00:12:383
339950,0migration/318341-21kthreadcore19:57:313
339950,0migration/314914-21kthreadcore19:32:303
339950,0migration/313107-21irqcore20:17:293
339950,0migration/31263-21kthreadcore23:27:293
339950,0migration/312199-21aten_r1power_fr21:02:233
339950,0migration/31095-21aten_r1power_cu20:32:243
329950,0watchdog/32846-21telnet21:37:243
329950,0watchdog/328421-21memory20:02:313
329950,0watchdog/312482-21ssh21:58:283
29815050,0irq/29-eth0-tx-8122-21munin-node23:32:242
29815050,0irq/29-eth0-tx-29951-21tr21:32:282
29815050,0irq/29-eth0-tx-28451-21ssh23:04:552
29815050,0irq/29-eth0-tx-1986-21ssh22:48:452
29815050,0irq/29-eth0-tx-14382-21unixbench-2d22:17:382
29815050,0irq/29-eth0-tx-11632-21munin-node21:42:252
29815050,0irq/29-eth0-tx-0-21swapper/223:52:302
29815050,0irq/29-eth0-tx-0-21swapper/223:39:322
29815050,0irq/29-eth0-tx-0-21swapper/223:30:322
29815050,0irq/29-eth0-tx-0-21swapper/221:40:322
29815050,0irq/29-eth0-tx-0-21swapper/221:26:182
29815050,0irq/29-eth0-tx-0-21swapper/200:17:222
29815050,0irq/29-eth0-tx-0-21swapper/200:12:092
29815050,0irq/29-eth0-tx-0-21swapper/021:22:270
29815050,0irq/29-eth0-tx-0-21swapper/020:57:250
29815050,0irq/29-eth0-tx-0-21swapper/020:26:440
29815050,0irq/29-eth0-tx-0-21swapper/020:26:440
29805050,0irq/28-eth0-rx-8822-21tune2fs23:32:253
29805050,0irq/28-eth0-rx-6975-21open_inodes19:47:323
29805050,0irq/28-eth0-rx-4387-21df00:07:243
29805050,0irq/28-eth0-rx-23917-21perl23:22:253
29805050,0irq/28-eth0-rx-18028-21kthreadcore22:22:283
29805050,0irq/28-eth0-rx-12289-21swap23:12:393
29805050,0irq/28-eth0-rx-0-21swapper/323:17:143
29805050,0irq/28-eth0-rx-0-21swapper/323:02:143
29805050,0irq/28-eth0-rx-0-21swapper/322:59:103
29805050,0irq/28-eth0-rx-0-21swapper/322:45:223
29805050,0irq/28-eth0-rx-0-21swapper/322:32:403
29805050,0irq/28-eth0-rx-0-21swapper/322:17:573
29805050,0irq/28-eth0-rx-0-21swapper/321:44:433
29805050,0irq/28-eth0-rx-0-21swapper/300:42:333
29805050,0irq/28-eth0-rx-0-21swapper/300:27:283
29805050,0irq/28-eth0-rx-0-21swapper/300:26:593
292749955,0cyclictest0-21swapper/222:41:282
292749955,0cyclictest0-21swapper/221:56:142
292749955,0cyclictest0-21swapper/221:29:162
292749955,0cyclictest0-21swapper/200:47:262
292749950,0cyclictest0-21swapper/222:34:042
292749950,0cyclictest0-21swapper/200:02:402
292739955,0cyclictest0-21swapper/100:37:311
292739954,0cyclictest3524-21snmpd23:04:501
292729955,0cyclictest0-21swapper/022:09:430
292729955,0cyclictest0-21swapper/000:17:540
292729950,0cyclictest0-21swapper/023:49:410
292729950,0cyclictest0-21swapper/023:28:240
292729950,0cyclictest0-21swapper/023:07:060
292729950,0cyclictest0-21swapper/022:27:230
292729950,0cyclictest0-21swapper/021:52:230
259950,0migration/29351-21kthreadcore23:12:312
259950,0migration/28451-21latency_hist00:47:132
259950,0migration/23276-21processes19:22:332
259950,0migration/230004-21kthreadcore22:27:302
259950,0migration/229798-21aten_r1power_cu20:07:242
259950,0migration/228237-21kthreadcore23:42:322
259950,0migration/227929-21irqrtprio21:12:302
259950,0migration/226312-21sh22:45:122
259950,0migration/217264-21kthreadcore22:57:312
259950,0migration/215044-21taskset19:56:052
249950,0watchdog/215627-21telnet20:42:242
179950,0migration/19835-21kthreadcore19:27:291
179950,0migration/17947-21kthreadcore22:52:291
179950,0migration/15838-21munin-node20:57:261
179950,0migration/129157-21timerwakeupswit20:47:371
179950,0migration/128140-21kthreadcore23:22:301
179950,0migration/128024-21cpuspeed_turbos00:02:261
179950,0migration/117856-21kthreadcore22:02:301
179950,0migration/116277-21gltestperf19:57:271
179950,0migration/115183-21kthreadcore22:57:301
169950,0watchdog/13267-21ls20:07:311
169950,0watchdog/11994-21df23:47:241
169950,0watchdog/112671-21which00:27:361
149950,0migration/09974-21latency_hist22:37:130
149950,0migration/08733-21kthreadcore00:07:300
149950,0migration/07638-21taskset19:48:550
149950,0migration/06343-21aten_r1power_cu00:27:250
149950,0migration/05941-21fschecks_count21:57:250
149950,0migration/05105-21taskset23:10:500
149950,0migration/030765-21fschecks_time00:22:260
149950,0migration/029677-21latency_hist20:07:130
149950,0migration/027782-21kthreadcore23:42:320
149950,0migration/021566-21kthreadcore23:37:300
149950,0migration/021045-21kthreadcore21:07:290
149950,0migration/01956-21kthreadcore20:07:300
149950,0migration/019154-21df19:37:240
149950,0migration/017319-21latency_hist21:27:120
149950,0migration/01601-21kthreadcore22:12:300
149950,0migration/01296-21switchtime22:47:380
149950,0migration/012360-21cpuspeed_turbos21:02:240
339940,0migration/332203-21kthreadcore21:52:293
339940,0migration/323721-21kthreadcore19:37:303
339940,0migration/320738-21kthreadcore20:22:293
339940,0migration/320738-21kthreadcore20:22:293
339940,0migration/31812-21kthreadcore23:07:303
339940,0migration/317572-21sh23:53:493
339940,0migration/313279-21kthreadcore20:37:303
329940,0watchdog/315624-21aten2.4-expect20:42:243
29815040,0irq/29-eth0-tx-7929-21irqstats00:27:312
29815040,0irq/29-eth0-tx-5422-21ssh21:57:152
29815040,0irq/29-eth0-tx-31414-21munin-node22:12:242
29815040,0irq/29-eth0-tx-29638-21ssh00:37:332
29815040,0irq/29-eth0-tx-26850-21ssh21:47:342
29815040,0irq/29-eth0-tx-16406-21ssh22:22:172
29815040,0irq/29-eth0-tx-1303-21munin-node21:17:250
29815040,0irq/29-eth0-tx-0-21swapper/223:57:282
29815040,0irq/29-eth0-tx-0-21swapper/223:47:582
29815040,0irq/29-eth0-tx-0-21swapper/223:22:372
29815040,0irq/29-eth0-tx-0-21swapper/200:32:152
29815040,0irq/29-eth0-tx-0-21swapper/200:22:422
29815040,0irq/29-eth0-tx-0-21swapper/019:22:230
29805040,0irq/28-eth0-rx-0-21swapper/322:52:293
29805040,0irq/28-eth0-rx-0-21swapper/321:23:593
29805040,0irq/28-eth0-rx-0-21swapper/321:17:313
29805040,0irq/28-eth0-rx-0-21swapper/320:52:243
29805040,0irq/28-eth0-rx-0-21swapper/320:07:273
29805040,0irq/28-eth0-rx-0-21swapper/300:47:313
292749943,0cyclictest3571-21lldpd21:17:182
292749943,0cyclictest3571-21lldpd20:29:172
292749943,0cyclictest3524-21snmpd20:52:192
292749943,0cyclictest3524-21snmpd20:41:492
292749943,0cyclictest3524-21snmpd20:12:332
292749943,0cyclictest2048-21awk19:47:272
292749943,0cyclictest20402-21awk21:07:282
292749943,0cyclictest16413-21awk19:57:282
292739944,0cyclictest0-21swapper/122:32:021
292739943,0cyclictest3571-21lldpd21:43:481
292739943,0cyclictest3571-21lldpd20:23:471
292739943,0cyclictest3571-21lldpd20:23:471
292739943,0cyclictest3571-21lldpd19:37:471
292739943,0cyclictest3524-21snmpd22:49:051
292739943,0cyclictest3524-21snmpd21:37:191
292739943,0cyclictest3524-21snmpd20:37:491
292739943,0cyclictest3524-21snmpd20:02:481
292739943,0cyclictest3524-21snmpd19:47:181
292739943,0cyclictest17605-21awk22:22:271
292739940,0cyclictest0-21swapper/123:41:521
292739940,0cyclictest0-21swapper/121:59:521
292739940,0cyclictest0-21swapper/100:08:021
292729944,0cyclictest0-21swapper/023:16:250
292729944,0cyclictest0-21swapper/022:24:420
292729944,0cyclictest0-21swapper/021:48:360
292729944,0cyclictest0-21swapper/000:44:040
292729943,0cyclictest9209-21awk19:52:270
292729943,0cyclictest3571-21lldpd20:29:470
292729943,0cyclictest3571-21lldpd00:50:200
292729943,0cyclictest27160-21awk19:42:280
292729943,0cyclictest15271-21awk22:02:280
292729943,0cyclictest13455-21awk22:57:280
292729940,0cyclictest0-21swapper/022:19:550
259940,0migration/29291-21kthreadcore19:27:282
259940,0migration/25995-21kthreadcore22:52:292
259940,0migration/232292-21kthreadcore23:07:302
259940,0migration/226107-21munin-node19:42:242
259940,0migration/224609-21latency19:37:302
259940,0migration/224581-21kthreadcore20:22:312
259940,0migration/224581-21kthreadcore20:22:312
259940,0migration/217124-21kthreadcore20:17:302
259940,0migration/212726-21fschecks_count21:02:252
22376244,0sleep02072-21kworker/0:220:45:060
179940,0migration/18027-21latency_hist23:32:131
179940,0migration/15676-21idleruntime20:12:271
179940,0migration/130230-21cpuspeed_turbos00:22:251
179940,0migration/127116-21fschecks_count21:12:271
179940,0migration/126685-21kthreadcore00:17:321
179940,0migration/124838-21kthreadcore22:07:291
179940,0migration/122202-21kthreadcore21:07:301
179940,0migration/12183-21fschecks_time21:17:251
179940,0migration/120738-21kthreadcore21:27:311
179940,0migration/120479-21sh21:47:141
179940,0migration/120291-21kernelversion22:42:311
179940,0migration/115261-21kthreadcore00:12:311
179940,0migration/114569-21kthreadcore21:02:291
179940,0migration/11359-21irqstats00:42:321
179940,0migration/112340-21kthreadcore22:17:301
179940,0migration/111534-21irqrtprio22:37:291
169940,0watchdog/19424-21ssh22:36:081
169940,0watchdog/16231-21ssh23:27:481
169940,0watchdog/15151-21cut20:32:311
169940,0watchdog/13936-21ssh21:53:441
169940,0watchdog/127494-21iostat20:27:271
169940,0watchdog/117537-21munin-node19:32:311
169940,0watchdog/116650-21ssh00:51:321
169940,0watchdog/115766-21ssh21:23:521
169940,0watchdog/112243-21sendmail_mailtr23:12:361
149940,0migration/022353-21kthreadcore22:42:310
149940,0migration/018741-21kthreadcore23:17:310
149940,0migration/012901-21kthreadcore23:52:300
149940,0migration/011603-21kthreadcore23:32:300
8305030,0irq/26-0000:00:0-21swapper/319:27:413
29815030,0irq/29-eth0-tx-8545-21aten2.4-expect20:37:240
29815030,0irq/29-eth0-tx-0-21swapper/019:32:240
29805030,0irq/28-eth0-rx-0-21swapper/320:47:253
29805030,0irq/28-eth0-rx-0-21swapper/320:27:243
292749932,0cyclictest3459-21kthreadcore20:32:312
292739932,0cyclictest9732-21ps19:52:301
292739932,0cyclictest3524-21snmpd23:42:231
292739932,0cyclictest3524-21snmpd20:42:191
292739932,0cyclictest3524-21snmpd19:22:481
292739932,0cyclictest32483-21awk22:12:281
292739932,0cyclictest32285-21sensors19:42:341
292739932,0cyclictest31107-21awk20:52:271
292739932,0cyclictest29567-21munin-node23:07:281
292739932,0cyclictest15637-21awk23:17:281
292739932,0cyclictest13050-21awk20:17:281
292729933,0cyclictest3571-21lldpd21:32:480
292729932,0cyclictest7436-21sensors20:32:360
292729932,0cyclictest3571-21lldpd20:54:170
292729932,0cyclictest19977-21cut00:32:310
292729932,0cyclictest15377-21munin-node19:57:310
292729932,0cyclictest13947-21awk00:12:290
292729932,0cyclictest12759-21awk21:42:280
292729932,0cyclictest10658-21ntp_kernel_pll_20:12:320
292729932,0cyclictest10588-21sensors19:27:320
292729930,0cyclictest12809-21grep20:17:260
259930,0migration/223784-21hwlatdetect20:47:272
259930,0migration/223305-21fschecks_time20:02:262
249930,0watchdog/210902-21munin-node20:57:322
249930,0watchdog/20-21swapper/219:32:312
169930,0watchdog/10-21swapper/123:57:281
169930,0watchdog/10-21swapper/123:52:481
169930,0watchdog/10-21swapper/121:32:201
169930,0watchdog/10-21swapper/100:34:321
149930,0migration/09302-21sh22:35:480
329920,0watchdog/30-21swapper/320:57:243
292729920,0cyclictest0-21swapper/023:22:140
292729920,0cyclictest0-21swapper/021:12:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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