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2025-12-12 - 19:26
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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 Fri Dec 12, 2025 00:46:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20184210692sleep10-21swapper/119:06:331
30664501000irq/53-eth0-tx-0-21swapper/419:05:186
3066350990irq/52-eth0-rx-0-21swapper/719:09:199
3066350970irq/52-eth0-rx-0-21swapper/219:06:294
12250890irq/42-ahci0-21swapper/319:08:365
2023728273sleep90-21swapper/919:07:1711
3066350730irq/52-eth0-rx-0-21swapper/1119:05:193
2013727169sleep60-21swapper/619:06:028
2025926853sleep00-21swapper/019:07:320
2028026560sleep80-21swapper/819:07:5210
1950825955sleep100-21swapper/1019:05:302
1894525955sleep50-21swapper/519:05:257
20634993112cyclictest0-21swapper/1119:19:283
20634992928cyclictest0-21swapper/1119:11:123
2059299220cyclictest0-21swapper/020:08:230
20592992018cyclictest0-21swapper/022:08:290
2063299181cyclictest741rcuc/919:40:1911
2063299181cyclictest0-21swapper/922:10:0111
2063299181cyclictest0-21swapper/921:55:3511
2063299181cyclictest0-21swapper/921:10:0211
2063299181cyclictest0-21swapper/920:10:2711
2063299181cyclictest0-21swapper/900:35:0111
20631991816cyclictest9805-21perl20:20:1710
20631991816cyclictest797-21diskstats23:50:1410
20631991816cyclictest4796-21perl23:55:1810
20631991816cyclictest4505-21irqstats22:25:2310
20631991816cyclictest3797-21snmp_rack3slot920:55:2510
20631991816cyclictest32173-21iostat_ios20:50:2110
20631991816cyclictest31282-21irqstats19:20:2410
20631991816cyclictest30969-21snmp_rack3slot900:30:2810
20631991816cyclictest30112-21snmp_easybox.os20:05:1310
20631991816cyclictest29236-21snmp_rack3slot920:00:4810
20631991816cyclictest28320-21snmp_rack3slot921:30:1510
20631991816cyclictest28320-21snmp_rack3slot921:30:1510
20631991816cyclictest25178-21snmp_rack3slot922:10:1510
20631991816cyclictest24795-21snmp_easybox.os19:55:2510
20631991816cyclictest23636-21snmp_easybox.os23:35:2510
20631991816cyclictest17797-21diskstats22:00:1410
20631991816cyclictest17084-21snmp_rack3slot923:26:3910
20631991816cyclictest16834-21snmp_rack3slot919:45:1510
20631991816cyclictest16071-21snmp_easybox.os20:30:1210
20631991816cyclictest14375-21snmp_easybox.os20:25:2710
20629991816cyclictest667-21qemu-kvm20:20:158
20629991816cyclictest667-21qemu-kvm20:15:128
20629991816cyclictest667-21qemu-kvm20:08:338
20629991816cyclictest666-21qemu-kvm20:47:298
20629991816cyclictest666-21qemu-kvm20:10:148
2059399180cyclictest0-21swapper/119:30:151
20633991715cyclictest198932sleep1022:02:252
2063299171cyclictest0-21swapper/920:35:1911
2063299170cyclictest0-21swapper/921:43:5411
2063299170cyclictest0-21swapper/921:30:1211
2063299170cyclictest0-21swapper/921:30:1211
2063299170cyclictest0-21swapper/920:55:2911
20631991715cyclictest9952-21df21:05:1810
20631991715cyclictest8830-21snmp_rack3slot919:35:1310
20631991715cyclictest7625-21irqstats21:45:2210
20631991715cyclictest5706-21snmp_rack3slot920:15:1210
20631991715cyclictest4427-21perl23:10:1710
20631991715cyclictest3389-21snmp_easybox.os20:10:2410
20631991715cyclictest31674-21snmp_rack3slot923:47:1510
20631991715cyclictest301-21perl22:20:1510
20631991715cyclictest28064-21snmp_rack3slot922:15:1710
20631991715cyclictest27180-21snmp_easybox.os23:40:2410
20631991715cyclictest25599-21snmp_easybox.os19:15:1510
20631991715cyclictest22759-21diskstats00:20:1610
20631991715cyclictest22759-21diskstats00:20:1610
20631991715cyclictest22449-21hddtemp_smartct19:10:1810
20631991715cyclictest21921-21users19:50:3510
20631991715cyclictest21869-21df22:50:1610
20631991715cyclictest21265-21iostat_ios20:35:2310
20631991715cyclictest21151-21snmp_rack3slot900:16:5210
20631991715cyclictest21041-21snmp_rack3slot921:20:1710
20631991715cyclictest19450-21snmp_rack3slot923:30:2510
20631991715cyclictest18775-21snmp_rack3slot922:45:1510
20631991715cyclictest14682-21snmp_easybox.os00:10:1610
20631991715cyclictest14504-21perl21:55:2010
20631991715cyclictest14301-21snmp_rack3slot922:40:1310
20631991715cyclictest12229-21perl00:05:1710
20631991715cyclictest12229-21perl00:05:1710
20631991715cyclictest10263-21snmp_rack3slot900:02:1710
20629991716cyclictest667-21qemu-kvm20:35:178
20629991716cyclictest667-21qemu-kvm20:28:298
20629991715cyclictest666-21qemu-kvm20:42:118
20629991710cyclictest0-21swapper/621:20:018
20604991715cyclictest2406-21snmpd20:28:374
20633991615cyclictest750-1kworker/10:1H20:34:472
20633991615cyclictest31270-1kworker/10:2H19:46:112
20633991615cyclictest29862-1kworker/10:2H21:15:592
20633991615cyclictest0-21swapper/1023:52:432
20633991615cyclictest0-21swapper/1022:56:312
20633991615cyclictest0-21swapper/1022:30:252
20633991614cyclictest4589-21smartctl21:40:302
20633991614cyclictest15089-21python21:10:282
20633991614cyclictest11864-21python21:50:332
20632991615cyclictest9464-21ls20:20:1511
20632991615cyclictest761ksoftirqd/923:05:1511
20632991615cyclictest29089-21tune2fs22:15:2111
20632991615cyclictest0-21swapper/923:42:5911
20632991615cyclictest0-21swapper/919:20:1411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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