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2026-07-16 - 08:22
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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
Characteristics of the highest latencies:
System rackdslot0.osadl.org (updated Thu Jul 16, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17144993029,0cyclictest0-21swapper/122:45:151
17144993029,0cyclictest0-21swapper/122:45:151
1714999260,1cyclictest0-21swapper/222:10:012
17149992514,6cyclictest26751-21nfsd423:15:172
1714999240,2cyclictest27866-21http_loadtime22:20:142
1714999240,2cyclictest27866-21http_loadtime22:20:142
17149992310,7cyclictest25074-21taskset23:14:532
1714999230,2cyclictest6959-21fschecks_time20:45:162
1714999230,22cyclictest0-21swapper/219:50:362
1714999230,17cyclictest25141-21cat21:19:552
1713999230,22cyclictest0-21swapper/022:29:310
1713999230,21cyclictest27344-21timerwakeupswit23:15:210
1713999230,21cyclictest1066-21expr19:39:010
17149992214,7cyclictest7229-21fschecks_time00:35:162
17149992214,7cyclictest26600-21latency21:20:182
17149992212,5cyclictest23782-21chrt00:08:542
1714999221,20cyclictest14384-21taskset22:55:032
1714999220,2cyclictest8761-21latency23:40:172
1714999220,21cyclictest30165-21ls22:25:132
1714999220,21cyclictest0-21swapper/200:00:012
1714999220,1cyclictest3991-21H222:10:212
1714999220,1cyclictest24048-21perf20:20:012
1714999220,1cyclictest0-21swapper/220:35:192
1714999220,15cyclictest29695-21ntp_kernel_pll_21:25:192
1714999220,15cyclictest0-21swapper/221:10:012
1714499221,20cyclictest29868-21apt-config00:20:001
1713999223,18cyclictest22961-21awk00:05:210
17139992211,6cyclictest1962-21cstates19:40:130
1713999220,7cyclictest19815-21proc_pri22:05:190
1713999220,4cyclictest0-21swapper/019:45:180
1713999220,21cyclictest9751-21if_eno122:45:140
1713999220,21cyclictest9751-21if_eno122:45:140
1713999220,21cyclictest8001-21tr23:40:140
1713999220,21cyclictest3543-21timerwakeupswit21:35:230
1713999220,21cyclictest2560-21phpquery20:38:590
1713999220,21cyclictest25155-21fschecks_time20:20:160
1713999220,21cyclictest22502-21latency_hist23:10:000
1713999220,21cyclictest0-21swapper/023:55:010
1713999220,21cyclictest0-21swapper/023:25:110
1713999220,21cyclictest0-21swapper/020:30:150
1713999220,20cyclictest3991-21H222:10:210
1713999220,20cyclictest3991-21H222:10:210
17149992114,6cyclictest5260-21expr23:35:132
17149992114,6cyclictest27894-21hddtemp_smartct00:15:142
17149992114,6cyclictest2762-21missed_timers19:40:172
17149992114,6cyclictest24747-21cat00:10:142
17149992114,6cyclictest21835-21df_inode22:10:152
17149992114,6cyclictest13638-21expr23:50:132
17149992114,6cyclictest0-21swapper/221:35:202
17149992114,6cyclictest0-21swapper/220:25:012
17149992112,4cyclictest0-21swapper/220:51:472
1714999211,19cyclictest0-21swapper/200:20:142
1714999211,15cyclictest10207-21cpuspeed_turbos21:50:142
1714999210,2cyclictest3755-21cpu00:30:112
1714999210,2cyclictest11778-21grep22:50:132
1714999210,2cyclictest11309-21ls22:50:012
1714999210,2cyclictest11309-21ls22:50:012
1714999210,20cyclictest31596-21fschecks_count23:25:152
1714999210,20cyclictest23753-21/usr/sbin/munin19:20:162
1714999210,20cyclictest23753-21/usr/sbin/munin19:20:152
1714999210,20cyclictest19482-21irqstats20:10:152
1714999210,20cyclictest19482-21irqstats20:10:142
1714999210,20cyclictest0-21swapper/222:40:222
1714999210,1cyclictest0-21swapper/222:30:132
1714999210,16cyclictest3981-21H222:10:212
1714999210,16cyclictest15892-21snapd20:32:582
1714999210,15cyclictest14615-21timerandwakeup21:55:222
1714999210,15cyclictest14615-21timerandwakeup21:55:222
1714999210,15cyclictest0-21swapper/220:00:182
17139992114,6cyclictest22199-21cat20:15:140
17139992113,7cyclictest16553-21sed22:00:180
1713999210,6cyclictest2368-21chrt22:32:170
1713999210,6cyclictest1701-21apt-config23:30:010
1713999210,6cyclictest15687-21netstat21:00:160
1713999210,20cyclictest8400-21sed00:35:210
1713999210,20cyclictest30155-21timerwakeupswit21:25:210
1713999210,20cyclictest29073-21perl19:30:140
1713999210,20cyclictest25453-21ls00:10:180
1713999210,20cyclictest17471-21cpu19:10:140
1713999210,20cyclictest16062-21wc22:55:210
1713999210,20cyclictest14139-21date21:00:010
1713999210,20cyclictest1216-21cstates00:25:130
1713999210,20cyclictest0-21swapper/023:45:120
1713999210,20cyclictest0-21swapper/023:20:110
1713999210,20cyclictest0-21swapper/022:20:210
1713999210,20cyclictest0-21swapper/022:20:200
1713999210,20cyclictest0-21swapper/022:10:180
1713999210,20cyclictest0-21swapper/021:55:130
1713999210,20cyclictest0-21swapper/021:55:120
1713999210,20cyclictest0-21swapper/021:50:160
1713999210,20cyclictest0-21swapper/021:13:020
1713999210,20cyclictest0-21swapper/020:50:130
1713999210,20cyclictest0-21swapper/020:45:150
1713999210,20cyclictest0-21swapper/019:16:430
1713999210,19cyclictest3979-21H222:10:210
1713999210,19cyclictest24678-21timerwakeupswit23:10:210
17149992015,4cyclictest4035-21H222:10:212
17149992015,4cyclictest0-21swapper/221:10:142
17149992014,5cyclictest3985-21H222:10:212
17149992014,5cyclictest0-21swapper/200:00:202
17149992014,4cyclictest0-21swapper/219:45:152
17149992013,6cyclictest3827-21expr20:40:132
17149992013,6cyclictest31943-21/usr/sbin/munin21:30:162
17149992013,6cyclictest31943-21/usr/sbin/munin21:30:162
17149992013,6cyclictest19999-21grep19:15:012
17149992013,6cyclictest0-21swapper/222:15:002
1714999200,1cyclictest6310-21sensors21:40:222
1714999200,1cyclictest306432sleep219:34:462
1714999200,1cyclictest0-21swapper/223:20:222
1714999200,19cyclictest26332-21fschecks_time19:25:152
1714999200,19cyclictest0-21swapper/220:25:162
1714999200,19cyclictest0-21swapper/220:05:142
1714999200,15cyclictest2452-21fschecks_count23:30:142
1714999200,15cyclictest0-21swapper/222:35:222
17144992017,2cyclictest3058-21rs:main1
17139992014,5cyclictest3646-21expr22:35:140
17139992014,5cyclictest0-21swapper/022:40:100
17139992014,5cyclictest0-21swapper/021:30:190
17139992014,5cyclictest0-21swapper/021:30:190
17139992014,5cyclictest0-21swapper/021:05:150
17139992014,5cyclictest0-21swapper/019:25:220
17139992014,5cyclictest0-21swapper/000:15:160
17139992014,3cyclictest0-21swapper/019:55:130
17139992013,6cyclictest11759-21sort22:50:130
17139992013,6cyclictest0-21swapper/000:30:140
1713999200,19cyclictest3989-21H222:10:210
1713999200,19cyclictest0-21swapper/023:00:090
1713999200,19cyclictest0-21swapper/022:15:010
1713999200,19cyclictest0-21swapper/021:49:190
1713999200,19cyclictest0-21swapper/021:40:140
1713999200,19cyclictest0-21swapper/021:15:120
1713999200,19cyclictest0-21swapper/020:25:140
1713999200,19cyclictest0-21swapper/020:10:200
1713999200,19cyclictest0-21swapper/020:10:200
1713999200,19cyclictest0-21swapper/020:00:150
1713999200,19cyclictest0-21swapper/000:00:120
17149991914,4cyclictest0-21swapper/221:00:032
17149991913,5cyclictest17026-21grep22:00:192
17149991913,5cyclictest0-21swapper/220:00:022
1714999190,2cyclictest4099-21H222:10:212
1714999190,14cyclictest0-21swapper/219:38:042
1714499192,2cyclictest9869-21chrt23:42:171
1714499191,17cyclictest0-21swapper/120:15:231
17144991911,5cyclictest0-21swapper/121:00:011
1714499190,16cyclictest3991-21H222:10:211
1714499190,16cyclictest3985-21H222:10:211
1714499190,16cyclictest3985-21H222:10:211
1714499190,16cyclictest3979-21H222:10:211
17139991913,5cyclictest0-21swapper/000:20:010
1713999190,19cyclictest0-21swapper/023:58:430
1713999190,19cyclictest0-21swapper/023:35:140
1713999190,18cyclictest0-21swapper/020:40:200
1713999190,18cyclictest0-21swapper/019:50:140
1714999180,17cyclictest0-21swapper/221:45:032
1714499183,1cyclictest31850irq/133-nvme0q221:50:011
1714499182,1cyclictest0-21swapper/123:54:121
17144991816,1cyclictest2287-21entropy19:40:131
17144991816,1cyclictest21-21ksoftirqd/120:22:521
17144991816,1cyclictest21-21ksoftirqd/119:17:401
17144991816,1cyclictest0-21swapper/122:30:331
17144991814,3cyclictest3989-21H222:10:211
17144991814,3cyclictest3983-21H222:10:211
17144991814,3cyclictest3981-21H222:10:211
17144991814,3cyclictest3979-21H222:10:211
1714499180,2cyclictest3987-21H222:10:211
1714499180,17cyclictest0-21swapper/122:37:331
1714499180,17cyclictest0-21swapper/100:07:051
1714499180,16cyclictest4035-21H222:10:211
1714499180,16cyclictest3991-21H222:10:211
1714499180,16cyclictest3987-21H222:10:211
1714499180,16cyclictest3981-21H222:10:211
1714499180,15cyclictest3985-21H222:10:211
1714499180,15cyclictest3985-21H222:10:211
1714499172,1cyclictest0-21swapper/123:35:181
17144991716,1cyclictest21-21ksoftirqd/123:46:181
17144991714,2cyclictest4099-21H222:10:211
17144991714,2cyclictest3991-21H222:10:211
17144991714,2cyclictest3987-21H222:10:211
17144991714,2cyclictest3981-21H222:10:211
17144991714,2cyclictest3981-21H222:10:211
17144991714,2cyclictest3979-21H222:10:211
17144991714,2cyclictest3976-21H222:10:211
17144991714,2cyclictest3865-21postgres21:38:081
17144991714,2cyclictest24209-21ntp_kernel_err21:15:171
17144991714,2cyclictest18453-21date20:10:011
17144991714,2cyclictest15697-21awk22:55:181
17144991714,2cyclictest12072-21cstates22:50:131
17144991714,2cyclictest1164-21awk20:35:171
17144991714,2cyclictest0-21swapper/121:20:131
17144991713,3cyclictest3981-21H222:10:211
17144991713,3cyclictest3979-21H222:10:211
17144991713,3cyclictest3976-21H222:10:211
1714499171,2cyclictest29104-21wget19:30:161
1714499171,15cyclictest3990-21H222:10:211
1714499170,2cyclictest3976-21H222:10:211
1714499170,2cyclictest27555-21taskset23:16:391
1714499170,1cyclictest3987-21H222:10:211
1714499170,16cyclictest4035-21H222:10:211
1714499170,16cyclictest3985-21H222:10:211
1714499170,16cyclictest3983-21H222:10:211
1714499170,16cyclictest3976-21H222:10:211
1714499170,16cyclictest3976-21H222:10:211
1714499170,16cyclictest31532-21expr19:35:151
1714499170,16cyclictest29067-21users22:20:211
1714499170,16cyclictest29067-21users22:20:201
1714499170,16cyclictest27445-21sed19:25:201
1714499170,16cyclictest23390-21taskset22:12:541
1714499170,16cyclictest1880-21cpuspeed_turbos23:30:131
1714499170,16cyclictest18773-21/usr/sbin/munin00:00:131
1714499170,16cyclictest12080-21users21:50:221
1714499160,15cyclictest3991-21H222:10:211
1714499160,15cyclictest13353-21expr21:55:141
1714499160,15cyclictest13353-21expr21:55:141
1714499160,15cyclictest1331-21df_inode00:25:141
1714499160,15cyclictest0-21swapper/122:05:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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