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2025-11-13 - 01:48
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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 Nov 13, 2025 00:46:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30663501120irq/52-eth0-rx-0-21swapper/1119:05:023
18115210995sleep100-21swapper/1019:08:042
18036210996sleep90-21swapper/919:07:0311
30663501000irq/52-eth0-rx-0-21swapper/219:08:564
122501000irq/42-ahci0-21swapper/119:09:431
1639029884sleep00-21swapper/019:05:180
3066350900irq/52-eth0-rx-0-21swapper/519:05:287
1810828979sleep70-21swapper/719:08:019
12250890irq/42-ahci0-21swapper/819:07:4810
3066350870irq/52-eth0-rx-0-21swapper/419:06:536
12250860irq/42-ahci0-21swapper/319:08:235
1807726653sleep60-21swapper/619:07:368
1845299290cyclictest0-21swapper/1120:20:023
1845299290cyclictest0-21swapper/1120:19:533
1845299290cyclictest0-21swapper/1120:19:533
1841099264cyclictest0-21swapper/000:25:010
18449992212cyclictest7804-21snmp_rack3slot920:20:1710
18449992212cyclictest24201-21diskstats00:25:1510
18449992212cyclictest11540-21snmp_rack3slot921:10:1410
1845299216cyclictest0-21swapper/1119:22:393
18449992112cyclictest509-21yum23:50:3110
18449992112cyclictest3273-21snmp_rack3slot919:30:1410
18449992112cyclictest30174-21df22:20:1410
18449992112cyclictest23901-21snmp_easybox.os19:15:1610
18449992112cyclictest22993-21snmp_rack3slot922:10:1610
18449992112cyclictest16962-21snmp_easybox.os19:50:1310
18449992112cyclictest15767-21snmp_easybox.os20:30:2610
18449992112cyclictest15767-21snmp_easybox.os20:30:2610
18449992112cyclictest14657-21snmp_rack3slot919:45:1810
18449992111cyclictest2410-21snmp_rack3slot920:55:3810
18449992012cyclictest6346-21iostat_ios23:15:1910
18449992012cyclictest6236-21snmp_rack3slot921:01:4910
18449992012cyclictest29073-21snmp_rack3slot923:01:3810
18449992012cyclictest28726-21snmp_rack3slot923:45:2410
18449992012cyclictest28496-21snmp_rack3slot919:20:1510
18449992012cyclictest26615-21snmp_rack3slot921:30:2010
18449992012cyclictest25941-21snmp_rack3slot922:15:1310
18449992012cyclictest25813-21snmp_rack3slot923:41:4710
18449992012cyclictest25666-21munin-run23:00:0110
18449992012cyclictest22186-21snmp_rack3slot923:36:5110
18449992012cyclictest18597-21perl20:35:1910
18449992012cyclictest17533-21snmp_rack3slot922:00:3810
18449992012cyclictest14890-21snmp_rack3slot923:26:4210
18449992012cyclictest13287-21diskstats00:10:1510
18449992012cyclictest11024-21hddtemp_smartct19:40:1810
18449992011cyclictest30983-21perl23:05:1710
18449992011cyclictest30702-21snmp_rack3slot920:05:3710
18449992011cyclictest20224-21memory22:05:2410
1845199192cyclictest3066350irq/52-eth0-rx-19:35:352
18449991912cyclictest29773-21snmp_rack3slot900:30:5010
18449991912cyclictest21505-21memory00:20:2510
18449991912cyclictest15182-21diskstats21:15:1310
18449991912cyclictest11401-21perl20:25:2110
18449991911cyclictest5504-21perl22:30:1810
18449991911cyclictest19581-21iostat21:20:2010
18449991911cyclictest18556-21snmp_rack3slot923:31:5310
18449991911cyclictest17334-21snmp_easybox.os22:45:2810
1845199181cyclictest218512chrt19:12:402
1845199181cyclictest12250irq/42-ahci23:33:472
1845199181cyclictest12250irq/42-ahci22:14:162
1845199181cyclictest12250irq/42-ahci21:56:582
1845199181cyclictest12250irq/42-ahci19:40:162
18450991816cyclictest16053-21taskset00:15:0411
1845099181cyclictest0-21swapper/921:40:2211
1845099181cyclictest0-21swapper/919:15:1911
18449991812cyclictest27054-21snmp_rack3slot920:00:4910
18447991816cyclictest10014-21qemu-kvm21:25:158
18447991816cyclictest10013-21qemu-kvm21:45:158
18447991815cyclictest10014-21qemu-kvm21:10:138
1841099180cyclictest0-21swapper/021:10:330
18451991716cyclictest5125-21python20:15:312
18451991716cyclictest5125-21python20:15:312
18451991716cyclictest0-21swapper/1019:25:012
18451991716cyclictest0-21swapper/1000:20:302
1845199170cyclictest93522sleep1020:20:482
1845199170cyclictest9302chrt00:35:402
1845199170cyclictest79402chrt00:01:012
1845199170cyclictest7862sleep1023:54:002
1845199170cyclictest54892sleep1021:00:282
1845199170cyclictest53632sleep1019:32:542
1845199170cyclictest4192sleep1020:55:152
1845199170cyclictest41112sleep1023:13:212
1845199170cyclictest35992sleep1022:27:132
1845199170cyclictest322832sleep1022:21:502
1845199170cyclictest317562sleep1021:36:312
1845199170cyclictest31282chrt21:42:452
1845199170cyclictest3066350irq/52-eth0-rx-22:55:262
1845199170cyclictest3066350irq/52-eth0-rx-21:25:182
1845199170cyclictest3066350irq/52-eth0-rx-21:05:182
1845199170cyclictest3066350irq/52-eth0-rx-20:10:172
1845199170cyclictest303302sleep1019:21:282
1845199170cyclictest299092sleep1000:32:402
1845199170cyclictest295152chrt23:47:462
1845199170cyclictest290962sleep1023:01:542
1845199170cyclictest286422chrt22:16:482
1845199170cyclictest281962sleep1021:32:312
1845199170cyclictest275982sleep1020:46:272
1845199170cyclictest266892sleep1019:16:282
1845199170cyclictest263942sleep1000:29:152
1845199170cyclictest258412sleep1023:42:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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