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2025-12-01 - 15:05
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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 Mon Dec 01, 2025 12:46:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122501110irq/42-ahci0-21swapper/207:08:254
30664501090irq/53-eth0-tx-0-21swapper/307:05:145
122501000irq/42-ahci0-21swapper/107:09:001
3066350970irq/52-eth0-rx-0-21swapper/407:09:116
2950029690sleep90-21swapper/907:09:3211
2948029085sleep70-21swapper/707:09:189
2952528782sleep80-21swapper/807:09:5510
3066350850irq/52-eth0-rx-0-21swapper/507:05:297
3066350680irq/52-eth0-rx-0-21swapper/1107:05:193
2918626755sleep60-21swapper/607:06:058
2916226556sleep100-21swapper/1007:05:452
2916525955sleep00-21swapper/007:05:480
29686992813cyclictest1480-21jbd2/md0-809:14:033
2964899280cyclictest0-21swapper/008:10:230
29648992524cyclictest0-21swapper/010:14:280
29648992524cyclictest0-21swapper/010:14:280
29648992221cyclictest0-21swapper/007:10:260
2964899210cyclictest0-21swapper/007:30:280
2964899190cyclictest0-21swapper/007:20:230
2968499181cyclictest0-21swapper/911:05:1711
2968499181cyclictest0-21swapper/910:36:0311
2968499181cyclictest0-21swapper/909:26:3811
2968499181cyclictest0-21swapper/907:40:0111
29683991816cyclictest9706-21snmp_rack3slot908:07:1710
29683991816cyclictest576-21perl07:55:1610
29683991816cyclictest5354-21snmp_rack3slot909:30:1410
29683991816cyclictest31710-21iostat_ios10:50:1810
29683991816cyclictest30063-21diskstats09:20:1510
29683991816cyclictest29542-21df_inode08:35:1610
29683991816cyclictest28771-21snmp_rack3slot910:00:4810
29683991816cyclictest2876-21snmp_rack3slot907:15:1710
29683991816cyclictest26895-21snmp_rack3slot909:15:1610
29683991816cyclictest26303-21snmp_rack3slot908:30:1510
29683991816cyclictest20029-21users07:35:2810
29683991816cyclictest13501-21snmp_easybox.os09:40:2410
29683991816cyclictest12866-21snmp_rack3slot911:55:1110
29674991816cyclictest32678-21qemu-kvm10:20:148
29674991816cyclictest32678-21qemu-kvm10:10:158
29674991816cyclictest32678-21qemu-kvm10:10:148
29674991816cyclictest32678-21qemu-kvm10:08:248
29674991816cyclictest32677-21qemu-kvm10:45:288
29673991816cyclictest5336-21python08:00:257
29664991816cyclictest2406-21snmpd08:51:114
2964899180cyclictest0-21swapper/010:00:260
2964899180cyclictest0-21swapper/007:55:260
2968499170cyclictest5772-1kworker/9:0H09:39:4711
2968499170cyclictest0-21swapper/908:08:5811
2968499170cyclictest0-21swapper/907:10:2511
29683991715cyclictest9138-21snmp_rack3slot909:35:1610
29683991715cyclictest7214-21snmp_rack3slot907:20:1310
29683991715cyclictest6607-21perl11:45:1710
29683991715cyclictest439-21snmp_easybox.os09:25:1210
29683991715cyclictest3549-21snmp_easybox.os10:55:2610
29683991715cyclictest3403-21perl12:25:1510
29683991715cyclictest31040-21snmp_rack3slot907:10:1610
29683991715cyclictest29787-21snmp_rack3slot911:32:0310
29683991715cyclictest27332-21snmp_easybox.os12:15:1210
29683991715cyclictest27320-21diskstats10:45:1510
29683991715cyclictest26095-21snmp_rack3slot911:26:2710
29683991715cyclictest25711-21snmp_easybox.os12:10:2310
29683991715cyclictest23181-21df_inode09:55:1410
29683991715cyclictest23181-21df_inode09:55:1310
29683991715cyclictest22770-21snmp_rack3slot909:10:1310
29683991715cyclictest21602-21snmp_rack3slot909:52:1310
29683991715cyclictest21104-21snmp_rack3slot909:07:0310
29683991715cyclictest20777-21perl11:20:1310
29683991715cyclictest20047-21df_inode10:35:1410
29683991715cyclictest18067-21snmp_easybox.os11:15:2410
29683991715cyclictest17782-21snmp_easybox.os08:20:1310
29683991715cyclictest17331-21snmp_rack3slot909:00:3510
29683991715cyclictest16919-21snmp_rack3slot910:30:1810
29683991715cyclictest13952-21irqstats11:10:2110
29683991715cyclictest1333-21snmp_rack3slot912:21:3810
29683991715cyclictest12338-21snmp_rack3slot912:36:4910
29683991715cyclictest11497-21yum11:05:3210
29683991715cyclictest10529-21snmp_rack3slot907:25:1610
29683991715cyclictest10069-21snmp_rack3slot908:50:4810
2968099175cyclictest0-21swapper/712:10:009
29674991716cyclictest9818-21qemu-kvm08:08:178
29674991716cyclictest32678-21qemu-kvm10:29:528
29674991716cyclictest32678-21qemu-kvm10:16:288
29674991716cyclictest32677-21qemu-kvm10:41:398
29674991716cyclictest32677-21qemu-kvm10:38:288
29673991715cyclictest21233-21qemu-kvm09:12:557
2967299170cyclictest0-21swapper/411:55:216
29664991715cyclictest2406-21snmpd12:25:424
29664991715cyclictest2406-21snmpd11:10:574
29664991715cyclictest2406-21snmpd09:12:564
2964899170cyclictest0-21swapper/009:15:260
29684991615cyclictest741rcuc/912:31:4311
29684991615cyclictest0-21swapper/910:40:1811
29684991615cyclictest0-21swapper/907:25:2311
2968499161cyclictest0-21swapper/908:45:1511
29683991614cyclictest7858-21snmp_rack3slot911:00:5010
29683991614cyclictest31297-21df11:35:1210
29683991614cyclictest25304-21df07:45:1410
29683991614cyclictest22265-21diskstats08:25:1410
29683991614cyclictest21588-21iostat_ios12:05:2010
29683991614cyclictest16918-21yum08:15:3210
29683991614cyclictest16399-21snmp_easybox.os12:00:1110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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