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2026-08-08 - 21:01
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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 Sat Aug 08, 2026 12:46:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122501140irq/42-ahci0-21swapper/707:08:289
11834211097sleep90-21swapper/907:06:4211
11879210693sleep80-21swapper/807:07:1810
11791210694sleep30-21swapper/307:06:135
122501030irq/42-ahci0-21swapper/207:08:544
30549501010irq/53-eth0-rx-0-21swapper/107:09:271
11730210190sleep40-21swapper/407:05:256
3054950910irq/53-eth0-rx-0-21swapper/507:07:157
3054950860irq/53-eth0-rx-0-21swapper/1107:06:083
1194426553sleep00-21swapper/007:08:100
1206826361sleep100-21swapper/1007:09:072
1184626353sleep60-21swapper/607:06:528
1223999490cyclictest0-21swapper/008:13:560
1228899450cyclictest0-21swapper/1108:10:343
1223999450cyclictest0-21swapper/008:15:120
1228899350cyclictest0-21swapper/1108:09:533
1223999290cyclictest4817-21munin-node09:10:270
12288992726cyclictest0-21swapper/1109:09:513
1228899240cyclictest12456-21head09:15:153
1228899240cyclictest12456-21head09:15:143
1228899210cyclictest0-21swapper/1109:11:323
1228699192cyclictest0-21swapper/912:38:0111
1228699192cyclictest0-21swapper/912:31:5811
1228699192cyclictest0-21swapper/912:26:3111
1228699192cyclictest0-21swapper/910:40:2111
1228699192cyclictest0-21swapper/909:47:5911
1226399194cyclictest0-21swapper/310:35:125
12287991817cyclictest0-21swapper/1009:00:212
1228799181cyclictest3055050irq/54-eth0-tx-11:21:172
1228799181cyclictest3055050irq/54-eth0-tx-10:45:562
1228799181cyclictest3055050irq/54-eth0-tx-10:41:042
1228799181cyclictest3055050irq/54-eth0-tx-10:31:482
1228799181cyclictest3054950irq/53-eth0-rx-12:38:012
1228799181cyclictest3054950irq/53-eth0-rx-12:23:172
1228799181cyclictest3054950irq/53-eth0-rx-12:23:162
1228799181cyclictest3054950irq/53-eth0-rx-12:05:132
1228799181cyclictest3054950irq/53-eth0-rx-12:00:192
1228799181cyclictest3054950irq/53-eth0-rx-11:55:292
1228799181cyclictest3054950irq/53-eth0-rx-11:51:522
1228799181cyclictest3054950irq/53-eth0-rx-11:40:512
1228799181cyclictest3054950irq/53-eth0-rx-11:36:442
1228799181cyclictest3054950irq/53-eth0-rx-11:31:342
1228799181cyclictest3054950irq/53-eth0-rx-11:15:292
1228799181cyclictest3054950irq/53-eth0-rx-11:10:452
1228799181cyclictest3054950irq/53-eth0-rx-11:05:182
1228799181cyclictest3054950irq/53-eth0-rx-10:56:532
1228799181cyclictest3054950irq/53-eth0-rx-10:25:522
1228799181cyclictest3054950irq/53-eth0-rx-10:15:362
1228799181cyclictest3054950irq/53-eth0-rx-09:50:112
1228799181cyclictest3054950irq/53-eth0-rx-08:08:392
1228799181cyclictest3054950irq/53-eth0-rx-07:25:522
1228799181cyclictest3054950irq/53-eth0-rx-07:24:192
1228799181cyclictest3054950irq/53-eth0-rx-07:12:092
1228799181cyclictest12250irq/42-ahci12:31:182
1228799181cyclictest12250irq/42-ahci10:08:282
1228799181cyclictest12250irq/42-ahci08:36:002
12286991816cyclictest770-21ssh09:57:5011
12286991816cyclictest12024-21ssh10:58:5111
1228699181cyclictest761ksoftirqd/912:20:2911
1228699181cyclictest761ksoftirqd/912:20:2811
1228699181cyclictest761ksoftirqd/912:15:1411
1228699181cyclictest761ksoftirqd/912:00:1511
1228699181cyclictest761ksoftirqd/911:20:1611
1228699181cyclictest761ksoftirqd/910:25:0011
1228699181cyclictest761ksoftirqd/909:35:3311
1228699181cyclictest761ksoftirqd/907:55:1311
1228699181cyclictest741rcuc/911:02:2911
1228699181cyclictest0-21swapper/912:07:1511
1228699181cyclictest0-21swapper/911:50:3311
1228699181cyclictest0-21swapper/911:41:0611
1228699181cyclictest0-21swapper/911:32:0811
1228699181cyclictest0-21swapper/911:12:5811
1228699181cyclictest0-21swapper/911:09:3311
1228699181cyclictest0-21swapper/910:53:0111
1228699181cyclictest0-21swapper/910:21:3311
1228699181cyclictest0-21swapper/910:20:0211
1228699181cyclictest0-21swapper/910:11:4911
1228699181cyclictest0-21swapper/910:05:0711
1228699181cyclictest0-21swapper/909:42:5311
1228699181cyclictest0-21swapper/909:42:5311
1228699181cyclictest0-21swapper/909:30:0411
1228699181cyclictest0-21swapper/909:30:0311
1228699181cyclictest0-21swapper/909:16:0211
1228699181cyclictest0-21swapper/909:16:0211
1228699181cyclictest0-21swapper/908:51:4911
1228699181cyclictest0-21swapper/908:15:1511
1228699181cyclictest0-21swapper/908:10:0011
1228699181cyclictest0-21swapper/907:21:0411
1228599180cyclictest0-21swapper/808:12:3910
1226399183cyclictest21779-21ssh11:57:455
1226399182cyclictest0-21swapper/311:52:165
1226399182cyclictest0-21swapper/310:25:585
1226399181cyclictest0-21swapper/311:06:015
12255991816cyclictest8993-21snmp_rack3slot910:30:144
12255991816cyclictest6169-21snmp_easybox.os09:35:264
12255991816cyclictest22909-21iostat_ios07:20:184
12255991816cyclictest15458-21ntp_states11:00:214
12288991716cyclictest3054950irq/53-eth0-rx-07:24:463
12287991716cyclictest2391-21ssh10:50:172
12287991716cyclictest0-21swapper/1011:00:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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