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2025-09-17 - 01:41
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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 rack3slot3.osadl.org (updated Wed Sep 17, 2025 00:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18775210894sleep90-21swapper/919:05:1611
30663501070irq/52-eth0-rx-0-21swapper/1019:08:222
20986210494sleep40-21swapper/419:08:356
12250990irq/42-ahci0-21swapper/119:08:491
12250960irq/42-ahci0-21swapper/219:08:514
12250910irq/42-ahci0-21swapper/719:08:329
3066350900irq/52-eth0-rx-0-21swapper/319:06:405
3066350890irq/52-eth0-rx-0-21swapper/1119:05:323
3066350870irq/52-eth0-rx-0-21swapper/519:05:327
2106027973sleep80-21swapper/819:09:3910
2079826253sleep60-21swapper/619:06:498
1791825955sleep00-21swapper/019:05:060
21232992113cyclictest0-21swapper/1119:27:323
21232992112cyclictest13838-21snmp_rack3slot920:25:163
21232992112cyclictest13838-21snmp_rack3slot920:25:163
21232992012cyclictest123682chrt20:24:023
21232991912cyclictest14723-21chrt22:20:023
2123299185cyclictest0-21swapper/1120:45:243
21231991817cyclictest27812-1kworker/10:2H21:30:022
2123199181cyclictest12250irq/42-ahci20:30:542
2123099181cyclictest25232-1kworker/9:1H21:08:5111
2123099181cyclictest0-21swapper/922:50:4411
21229991816cyclictest8406-21munin-run23:00:0010
21229991816cyclictest4193-21munin-run21:45:0010
21229991816cyclictest4044-21snmp_rack3slot923:35:2510
21229991816cyclictest4044-21snmp_rack3slot923:35:2510
21229991816cyclictest32049-21diskstats20:50:1610
21229991816cyclictest29895-21snmp_rack3slot920:01:0110
21229991816cyclictest2918-21snmp_rack3slot920:10:1410
21229991816cyclictest28772-21ntp_states22:40:4610
21229991816cyclictest28415-21snmp_easybox.os19:15:2910
21229991816cyclictest25197-21snmp_rack3slot921:25:1910
21229991816cyclictest23511-21snmp_easybox.os23:20:1210
21229991816cyclictest23130-21snmp_rack3slot900:01:3710
21229991816cyclictest22607-21snmp_rack3slot919:51:2510
21229991816cyclictest18155-21snmp_rack3slot923:10:2710
21229991816cyclictest17478-21diskstats20:30:1510
21229991816cyclictest1589-21snmp_rack3slot900:16:3710
21229991816cyclictest14053-21iostat19:40:1910
21229991816cyclictest12629-21snmp_rack3slot922:10:2310
21229991816cyclictest12427-21munin-run23:50:0010
21229991816cyclictest1059-21snmp_rack3slot920:05:5310
21228991816cyclictest30190-21crond20:05:019
2121499183cyclictest0-21swapper/322:46:215
2121499183cyclictest0-21swapper/322:36:195
2121499183cyclictest0-21swapper/320:21:195
2121499183cyclictest0-21swapper/319:56:115
2121499182cyclictest0-21swapper/323:53:195
2121499182cyclictest0-21swapper/323:53:195
2121499182cyclictest0-21swapper/323:29:095
2121499182cyclictest0-21swapper/322:04:565
2121499182cyclictest0-21swapper/320:55:075
2121499182cyclictest0-21swapper/320:41:475
2121499182cyclictest0-21swapper/320:41:475
2121499182cyclictest0-21swapper/320:32:195
2121499182cyclictest0-21swapper/320:18:455
2121499182cyclictest0-21swapper/319:52:185
21207991816cyclictest2406-21snmpd23:12:074
21231991716cyclictest0-21swapper/1022:21:142
2123199170cyclictest88792sleep1000:25:532
2123199170cyclictest88172sleep1019:35:082
2123199170cyclictest85802sleep1023:42:112
2123199170cyclictest85802sleep1023:42:112
2123199170cyclictest831ksoftirqd/1022:40:372
2123199170cyclictest831ksoftirqd/1019:50:332
2123199170cyclictest80812sleep1022:55:532
2123199170cyclictest79912sleep1019:30:432
2123199170cyclictest7852sleep1020:50:282
2123199170cyclictest7652sleep1019:22:542
2123199170cyclictest74052sleep1021:55:112
2123199170cyclictest64632chrt21:50:102
2123199170cyclictest61072chrt21:00:052
2123199170cyclictest54422sleep1021:45:222
2123199170cyclictest54282sleep1000:23:152
2123199170cyclictest52722chrt20:55:522
2123199170cyclictest48992sleep1023:36:342
2123199170cyclictest48992sleep1023:36:332
2123199170cyclictest45712sleep1022:52:292
2123199170cyclictest44372sleep1019:26:542
2123199170cyclictest3066350irq/52-eth0-rx-21:40:542
2123199170cyclictest3066350irq/52-eth0-rx-20:15:162
2123199170cyclictest3066350irq/52-eth0-rx-19:40:352
2123199170cyclictest305752sleep1000:14:032
2123199170cyclictest303332chrt20:45:392
2123199170cyclictest294622chrt19:16:172
2123199170cyclictest271282sleep1023:25:082
2123199170cyclictest262212chrt19:56:092
2123199170cyclictest259042sleep1022:36:042
2123199170cyclictest256982sleep1020:40:272
2123199170cyclictest256982sleep1020:40:272
2123199170cyclictest243512sleep1000:05:132
2123199170cyclictest236032sleep1021:21:072
2123199170cyclictest231802chrt20:37:262
2123199170cyclictest231802chrt20:37:252
2123199170cyclictest230962sleep1000:01:132
2123199170cyclictest224792sleep1022:34:032
2123199170cyclictest22282sleep1021:37:572
2123199170cyclictest198472sleep1023:15:082
2123199170cyclictest193702sleep1023:55:372
2123199170cyclictest187302chrt22:27:382
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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