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2026-05-12 - 22:27
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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 Tue May 12, 2026 12:46:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20866210894sleep30-21swapper/307:05:305
20953210794sleep40-21swapper/407:06:316
20959210493sleep100-21swapper/1007:06:372
12850990irq/42-ahci0-21swapper/807:09:0810
12850980irq/42-ahci0-21swapper/107:09:361
991850950irq/53-eth0-rx-0-21swapper/907:05:2911
991850950irq/53-eth0-rx-0-21swapper/207:05:194
991850900irq/53-eth0-rx-0-21swapper/707:07:569
991850890irq/53-eth0-rx-0-21swapper/507:06:377
991850850irq/53-eth0-rx-0-21swapper/1107:06:123
991850680irq/53-eth0-rx-0-21swapper/007:05:120
1970626553sleep60-21swapper/607:05:218
21382994714cyclictest0-21swapper/009:25:240
2141799310cyclictest0-21swapper/1109:15:103
21382993029cyclictest991850irq/53-eth0-rx-09:30:140
2141799190cyclictest187112sleep1109:13:533
21412991816cyclictest1553-21qemu-kvm08:28:518
21412991816cyclictest1553-21qemu-kvm08:15:138
21411991816cyclictest28668-21ssh12:05:037
2140999182cyclictest29376-21ssh09:50:025
2140999182cyclictest0-21swapper/310:59:225
2138299180cyclictest13301-21diskmemload09:19:550
119350180irq/18-parport013146-21qemu-kvm09:25:228
21417991716cyclictest991850irq/53-eth0-rx-07:16:403
21417991716cyclictest991850irq/53-eth0-rx-07:16:403
2141399175cyclictest0-21swapper/711:10:019
21412991716cyclictest1552-21qemu-kvm08:35:128
21412991716cyclictest1552-21qemu-kvm08:08:428
2140999171cyclictest1060-21processes11:40:235
2140999171cyclictest0-21swapper/310:36:305
21402991715cyclictest2308-21snmpd12:17:154
21382991716cyclictest22266-21nscd09:21:210
21382991715cyclictest0-21swapper/010:12:160
1699170watchdog/00-21swapper/010:25:180
1699170watchdog/00-21swapper/009:38:190
21417991615cyclictest991850irq/53-eth0-rx-10:16:433
21412991615cyclictest1553-21qemu-kvm08:43:588
21412991614cyclictest1553-21qemu-kvm08:20:128
21412991614cyclictest1553-21qemu-kvm08:12:518
21412991614cyclictest1552-21qemu-kvm08:45:368
21411991615cyclictest22594-21ssh11:30:567
21411991614cyclictest8465-21ssh11:46:377
21402991614cyclictest2308-21snmpd09:12:144
2138299162cyclictest0-21swapper/007:15:460
2138299162cyclictest0-21swapper/007:15:460
1699160watchdog/00-21swapper/009:13:390
21417991514cyclictest991850irq/53-eth0-rx-08:12:363
2141499154cyclictest0-21swapper/811:55:0110
2141499154cyclictest0-21swapper/808:30:0110
2141499154cyclictest0-21swapper/808:15:0110
2141399154cyclictest0-21swapper/710:23:329
2141399154cyclictest0-21swapper/707:35:019
21411991514cyclictest4903-21ssh11:16:267
21411991514cyclictest1553-21qemu-kvm08:39:577
21411991513cyclictest1552-21qemu-kvm08:47:017
2140999150cyclictest13301-21diskmemload10:16:205
2140999150cyclictest0-21swapper/310:10:215
21402991514cyclictest2308-21snmpd07:48:124
21402991514cyclictest2308-21snmpd07:48:114
21402991513cyclictest2308-21snmpd10:24:134
2139599150cyclictest0-21swapper/110:09:321
2139599150cyclictest0-21swapper/110:09:321
2139599150cyclictest0-21swapper/108:05:131
21382991510cyclictest0-21swapper/007:23:540
1699150watchdog/00-21swapper/011:02:190
1699150watchdog/00-21swapper/010:00:180
31140ksoftirqd/00-21swapper/011:10:220
21417991413cyclictest991850irq/53-eth0-rx-10:13:133
21417991413cyclictest991850irq/53-eth0-rx-09:26:023
21417991413cyclictest991850irq/53-eth0-rx-08:09:073
21417991413cyclictest8342sleep1107:21:163
21417991413cyclictest12850irq/42-ahci10:29:313
21417991412cyclictest4538-21chrt10:22:363
2141499144cyclictest0-21swapper/809:35:0010
2141399144cyclictest0-21swapper/711:40:009
2141399144cyclictest0-21swapper/711:00:029
2141399144cyclictest0-21swapper/709:30:009
2141399144cyclictest0-21swapper/708:05:019
2141399144cyclictest0-21swapper/708:05:019
2141399144cyclictest0-21swapper/707:35:019
2141399144cyclictest0-21swapper/707:35:019
2141399143cyclictest0-21swapper/709:45:019
2141399141cyclictest0-21swapper/708:35:019
2141299145cyclictest0-21swapper/611:37:088
2141299145cyclictest0-21swapper/607:50:028
2141299144cyclictest19455-21qemu-kvm10:47:298
2141299144cyclictest0-21swapper/610:45:018
21411991413cyclictest26727-21ssh09:46:027
21411991413cyclictest21732-21ssh09:42:557
21411991413cyclictest11732-21ssh12:16:227
21411991412cyclictest1552-21qemu-kvm08:42:467
2140999142cyclictest13301-21diskmemload12:20:535
2140999141cyclictest13301-21diskmemload09:24:265
2140999140cyclictest0-21swapper/311:15:185
21402991413cyclictest2308-21snmpd09:54:434
2140299140cyclictest0-21swapper/210:15:284
21382991413cyclictest991850irq/53-eth0-rx-10:15:160
1699140watchdog/00-21swapper/011:54:230
1699140watchdog/00-21swapper/009:59:380
991950130irq/54-eth0-tx-0-21swapper/911:19:5111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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