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2026-04-16 - 16:04
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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 Thu Apr 16, 2026 12:46:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9918501150irq/53-eth0-rx-0-21swapper/307:09:405
11084211095sleep20-21swapper/207:07:254
11103210793sleep80-21swapper/807:07:4210
128501040irq/42-ahci0-21swapper/107:09:501
11290210196sleep100-21swapper/1007:09:202
991850980irq/53-eth0-rx-0-21swapper/707:09:149
991850940irq/53-eth0-rx-0-21swapper/907:06:0711
991850920irq/53-eth0-rx-0-21swapper/407:07:396
991850880irq/53-eth0-rx-0-21swapper/507:07:257
12850850irq/42-ahci0-21swapper/1107:08:583
1095325853sleep60-21swapper/607:05:538
1093225853sleep00-21swapper/007:05:340
11485994021cyclictest0-21swapper/1108:22:383
11451993317cyclictest2745-21runrttasks10:19:570
11485993029cyclictest12850irq/42-ahci07:15:163
11485993029cyclictest12850irq/42-ahci07:11:173
11451993027cyclictest0-21swapper/010:10:360
11451993027cyclictest0-21swapper/010:10:350
11451993013cyclictest11022-1kworker/0:0H10:20:040
11451992928cyclictest31917-21md0_resync07:11:190
11478992625cyclictest31917-21md0_resync07:11:056
11451992610cyclictest12850irq/42-ahci07:16:300
991850250irq/53-eth0-rx-3740-21qemu-kvm09:20:127
1148599250cyclictest0-21swapper/1109:20:503
11451992523cyclictest0-21swapper/009:26:460
1145199240cyclictest0-21swapper/009:22:480
11461992322cyclictest31917-21md0_resync07:11:201
1145199230cyclictest0-21swapper/008:12:430
11485992221cyclictest0-21swapper/1109:26:053
11480992221cyclictest14780-21qemu-kvm07:11:178
11485992120cyclictest0-21swapper/1109:09:053
1148399195cyclictest0-21swapper/911:45:0211
1148399192cyclictest0-21swapper/911:11:4311
1148399192cyclictest0-21swapper/907:50:1211
1145199190cyclictest157552sleep009:19:140
11485991816cyclictest235052chrt07:22:213
1148599180cyclictest12850irq/42-ahci08:17:573
1148399181cyclictest12850irq/42-ahci10:28:0411
1148399181cyclictest12850irq/42-ahci07:25:2511
1148399181cyclictest0-21swapper/912:08:4611
1148399181cyclictest0-21swapper/911:49:0111
1148399181cyclictest0-21swapper/910:44:0911
1148399181cyclictest0-21swapper/910:38:1211
1148399181cyclictest0-21swapper/910:31:0111
1148399181cyclictest0-21swapper/910:24:0711
1148399181cyclictest0-21swapper/910:10:1911
1148399181cyclictest0-21swapper/910:10:1811
1148399181cyclictest0-21swapper/910:01:4611
1148399181cyclictest0-21swapper/909:50:1111
1148399181cyclictest0-21swapper/909:20:2611
11480991816cyclictest24328-21qemu-kvm08:22:108
11480991816cyclictest24328-21qemu-kvm08:08:198
11470991816cyclictest2308-21snmpd11:11:064
1148599171cyclictest0-21swapper/1110:04:313
11483991716cyclictest12850irq/42-ahci10:56:2611
11483991715cyclictest9441-21taskset07:46:4511
1148399170cyclictest3080-1kworker/9:2H11:25:1011
1148399170cyclictest0-21swapper/911:35:2311
1148399170cyclictest0-21swapper/911:20:2711
1148399170cyclictest0-21swapper/911:20:2611
1148399170cyclictest0-21swapper/909:35:1411
1148399170cyclictest0-21swapper/909:19:5511
1148399170cyclictest0-21swapper/909:05:2011
1148399170cyclictest0-21swapper/908:37:5511
1148399170cyclictest0-21swapper/908:21:2711
1148299175cyclictest0-21swapper/810:25:0110
11480991716cyclictest24327-21qemu-kvm08:30:288
11480991716cyclictest24327-21qemu-kvm08:25:198
11480991716cyclictest24327-21qemu-kvm08:16:218
11480991716cyclictest24327-21qemu-kvm08:13:298
11479991715cyclictest11192-21qemu-kvm07:45:447
11470991715cyclictest2308-21snmpd12:24:524
11470991715cyclictest2308-21snmpd07:48:334
12850160irq/42-ahci0-21swapper/710:10:439
12850160irq/42-ahci0-21swapper/710:10:429
11485991615cyclictest0-21swapper/1110:10:313
11485991615cyclictest0-21swapper/1110:10:303
11483991615cyclictest3080-1kworker/9:2H09:28:1311
11483991615cyclictest0-21swapper/912:16:1311
11483991615cyclictest0-21swapper/909:59:3411
11483991615cyclictest0-21swapper/909:10:4111
11483991615cyclictest0-21swapper/908:15:0811
11483991615cyclictest0-21swapper/907:32:4711
1148399160cyclictest20005-21gltestperf12:25:1211
1148399160cyclictest0-21swapper/912:38:0411
1148399160cyclictest0-21swapper/912:38:0411
1148399160cyclictest0-21swapper/911:34:4011
1148399160cyclictest0-21swapper/911:05:5511
1148399160cyclictest0-21swapper/910:53:3411
1148399160cyclictest0-21swapper/910:48:1911
1148399160cyclictest0-21swapper/910:07:5811
1148399160cyclictest0-21swapper/910:07:5811
1148399160cyclictest0-21swapper/909:46:2211
1148399160cyclictest0-21swapper/909:44:3211
1148399160cyclictest0-21swapper/909:33:3511
11480991614cyclictest24328-21qemu-kvm08:45:388
11480991614cyclictest24328-21qemu-kvm08:40:208
11480991614cyclictest14784-21snmp_rack3slot910:10:148
11480991614cyclictest14784-21snmp_rack3slot910:10:138
11479991615cyclictest24327-21qemu-kvm08:27:397
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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