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2026-05-13 - 07:24
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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 Wed May 13, 2026 00:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2260099231,16cyclictest20267-21wc20:00:172
2260099230,21cyclictest3546-21cron00:17:002
22600992214,7cyclictest0-21swapper/221:37:282
2260099220,2cyclictest5220-21grep20:30:142
2260099220,21cyclictest0-21swapper/221:15:192
2260099220,1cyclictest8513-21netstat20:35:162
22600992115,5cyclictest16949-21grep20:50:182
22600992114,6cyclictest6266-21expr21:30:152
22600992114,6cyclictest0-21swapper/219:55:202
22600992113,7cyclictest28869-21proxymap21:12:232
2260099211,19cyclictest0-21swapper/222:45:222
2260099210,2cyclictest4329-21grep23:20:182
2260099210,2cyclictest27108-21sed20:10:232
2260099210,2cyclictest0-21swapper/219:50:162
2260099210,2cyclictest0-21swapper/219:50:152
2260099210,20cyclictest14046-21sed22:40:172
2260099210,20cyclictest0-21swapper/222:15:172
2260099210,20cyclictest0-21swapper/219:16:172
2260099210,1cyclictest6596-21python322:30:012
2260099210,1cyclictest29196-21awk22:10:182
2260099210,1cyclictest15950-21pluginstate00:40:002
2260099210,1cyclictest0-21swapper/223:44:412
2260099210,1cyclictest0-21swapper/222:39:002
2260099210,1cyclictest0-21swapper/222:08:592
2260099210,1cyclictest0-21swapper/221:05:152
2260099210,19cyclictest0-21swapper/221:27:272
2260099210,16cyclictest4539-21/usr/sbin/munin19:35:182
2260099210,16cyclictest20912-21munin-plugin-st21:00:002
2260099210,15cyclictest0-21swapper/223:50:142
2260099210,14cyclictest0-21swapper/223:00:202
2260099210,14cyclictest0-21swapper/200:24:342
2259499210,17cyclictest0-21swapper/122:13:371
2259099214,16cyclictest0-21swapper/023:26:560
22600992014,5cyclictest0-21swapper/223:10:162
22600992014,5cyclictest0-21swapper/220:15:142
22600992014,5cyclictest0-21swapper/219:25:152
22600992014,5cyclictest0-21swapper/219:25:152
22600992014,5cyclictest0-21swapper/200:30:172
22600992014,5cyclictest0-21swapper/200:00:012
22600992013,6cyclictest0-21swapper/220:25:142
22600992013,6cyclictest0-21swapper/219:30:162
2260099200,1cyclictest9105-21df23:30:132
2260099200,1cyclictest3988-21H222:10:212
2260099200,1cyclictest0-21swapper/223:15:182
2260099200,1cyclictest0-21swapper/221:45:012
2260099200,1cyclictest0-21swapper/220:05:132
2260099200,1cyclictest0-21swapper/219:10:162
2260099200,19cyclictest3124-21timerwakeupswit22:20:222
2260099200,19cyclictest0-21swapper/223:45:162
2260099200,19cyclictest0-21swapper/223:45:162
2260099200,19cyclictest0-21swapper/222:55:172
2260099200,19cyclictest0-21swapper/200:11:282
2260099200,19cyclictest0-21swapper/200:05:142
2260099200,15cyclictest1437-21processes21:20:182
2260099200,15cyclictest11067-21cat19:45:132
2260099200,15cyclictest0-21swapper/220:40:192
2260099200,14cyclictest0-21swapper/223:05:202
2260099200,14cyclictest0-21swapper/221:55:142
2260099200,14cyclictest0-21swapper/221:53:442
2260099200,0cyclictest0-21swapper/220:20:162
22594992010,9cyclictest0-21swapper/119:15:171
22600991914,4cyclictest23709-21nfsd422:00:192
22600991914,4cyclictest0-21swapper/223:35:212
22600991914,4cyclictest0-21swapper/222:50:142
22600991914,4cyclictest0-21swapper/200:28:542
22600991913,5cyclictest14293-21expr20:45:182
22600991911,7cyclictest22941-21df23:55:132
2260099190,18cyclictest0-21swapper/222:27:482
2260099190,18cyclictest0-21swapper/222:27:482
2259499193,15cyclictest0-21swapper/119:55:141
22594991917,1cyclictest0-21swapper/122:24:101
22594991916,2cyclictest30147-21tune2fs21:15:161
22594991916,2cyclictest14149-21nfsd420:45:181
2259499191,15cyclictest0-21swapper/121:25:011
2259499190,17cyclictest32079-21ntp_kernel_pll_20:20:181
2259499190,16cyclictest4099-21H222:10:211
2259099193,15cyclictest0-21swapper/020:53:190
2259099192,2cyclictest4100-21H222:10:210
22590991916,0cyclictest0-21swapper/020:26:140
2259099190,4cyclictest27344-21fschecks_count23:05:140
2259099190,18cyclictest0-21swapper/023:02:140
2260099180,17cyclictest0-21swapper/219:20:182
2260099180,0cyclictest0-21swapper/221:45:142
2259499183,1cyclictest7148-21python319:40:021
2259499183,1cyclictest0-21swapper/122:50:131
2259499182,15cyclictest80652sleep123:29:341
2259499182,15cyclictest1682-21grep20:25:141
22594991816,1cyclictest0-21swapper/100:00:191
22594991815,2cyclictest5852-21cpuspeed_turbos21:30:151
22594991812,4cyclictest32470-21cpuspeed_turbos23:15:141
2259499180,1cyclictest0-21swapper/122:30:011
2259499180,1cyclictest0-21swapper/122:30:011
2259499180,17cyclictest843-21systemd-network00:37:171
2259499180,17cyclictest4099-21H222:10:211
2259499180,17cyclictest22567-21nvmesmart_nvme021:00:201
22590991816,1cyclictest9-21ksoftirqd/000:38:260
22590991815,2cyclictest30473-21cat23:10:180
22590991814,3cyclictest3976-21H222:10:210
2259099181,2cyclictest24906-21cat21:05:160
2259099181,16cyclictest22104-21if_lxdbr022:55:170
2259099181,16cyclictest12557-21nfsd423:35:180
2259099180,3cyclictest0-21swapper/021:30:190
2259099180,2cyclictest3981-21H222:10:210
2259099180,17cyclictest29572-21grep19:20:180
2259099180,17cyclictest2007-21systemd-journal23:42:520
2259099180,15cyclictest3976-21H222:10:210
2259099180,15cyclictest3976-21H222:10:210
2260099170,0cyclictest0-21swapper/221:00:142
2259499172,1cyclictest0-21swapper/123:30:141
22594991715,1cyclictest0-21swapper/122:18:261
22594991715,1cyclictest0-21swapper/121:40:171
22594991714,2cyclictest4035-21H222:10:211
22594991714,2cyclictest3987-21H222:10:211
22594991714,2cyclictest3414-21master19:33:461
22594991714,2cyclictest3351-21lxd22:06:511
22594991714,2cyclictest25415-21cpuspeed_turbos20:10:151
22594991714,2cyclictest14811-21grep23:40:141
22594991714,2cyclictest1079-21cups-browsed23:20:211
2259499171,15cyclictest4698-21grep19:35:141
2259499170,2cyclictest3985-21H222:10:211
2259499170,2cyclictest23947-21/usr/sbin/munin23:00:141
2259499170,2cyclictest16515-21sort22:45:161
2259499170,2cyclictest12563-21nfsd423:35:181
2259499170,1cyclictest0-21swapper/122:58:541
2259499170,1cyclictest0-21swapper/122:04:301
2259499170,16cyclictest7919-21fschecks_count20:35:131
2259499170,16cyclictest7708-21tune2fs00:25:151
2259499170,16cyclictest4579-21expr00:20:131
2259499170,16cyclictest399-20systemd-journal22:38:591
2259499170,16cyclictest3987-21H222:10:211
2259499170,16cyclictest3985-21H222:10:211
2259499170,16cyclictest27321-21fschecks_count23:05:141
2259499170,16cyclictest16915-21apache_volume23:45:111
2259499170,16cyclictest16915-21apache_volume23:45:111
2259499170,16cyclictest15997-21cat20:50:141
2259499170,16cyclictest1515-21lxd21:38:511
2259499170,16cyclictest14738-21smartctl19:50:191
2259499170,16cyclictest14738-21smartctl19:50:191
2259499170,16cyclictest14495-21snapd20:30:091
2259499170,16cyclictest11628-21nvmesmart_nvme020:40:201
22590991715,1cyclictest0-21swapper/020:45:010
22590991714,2cyclictest9297-21basename23:30:150
22590991714,2cyclictest6746-21wc00:25:000
22590991714,2cyclictest3989-21H222:10:210
22590991714,2cyclictest26952-21awk19:15:190
22590991714,2cyclictest13632-21expr19:50:140
22590991714,2cyclictest13632-21expr19:50:140
2259099171,15cyclictest93942sleep020:37:130
2259099171,15cyclictest3640-21which21:25:170
2259099171,15cyclictest3204-21JS22:10:210
2259099170,2cyclictest8653-21readlink00:25:220
2259099170,2cyclictest6862-21https22:30:010
2259099170,2cyclictest6462-21timerwakeupswit20:30:210
2259099170,2cyclictest4035-21H222:10:210
2259099170,2cyclictest3989-21H222:10:210
2259099170,2cyclictest1932-21expr19:30:140
2259099170,2cyclictest18168-21awk23:45:170
2259099170,2cyclictest18168-21awk23:45:170
2259099170,2cyclictest1-21systemd20:20:010
2259099170,2cyclictest1085-21gdbus22:00:220
2259099170,1cyclictest0-21swapper/022:47:420
2259099170,16cyclictest8897-21cat21:35:130
2259099170,16cyclictest8579-21smartctl19:40:130
2259099170,16cyclictest617-21idleruntime-cro20:25:010
2259099170,16cyclictest23141-21cat19:10:140
2259099170,16cyclictest2007-21systemd-journal21:15:430
2259099170,16cyclictest14500-21snapd00:05:270
2259099170,16cyclictest0-21swapper/019:38:390
22594991614,1cyclictest20318-21/usr/sbin/munin21:55:151
22594991614,1cyclictest13541-21expr22:40:141
22594991614,1cyclictest0-21swapper/119:45:131
22594991614,1cyclictest0-21swapper/100:10:161
22594991613,2cyclictest32296-21nfsd419:25:191
22594991613,2cyclictest32296-21nfsd419:25:191
2259499160,1cyclictest7161-21apt-config22:30:011
2259499160,1cyclictest302172chrt20:19:281
2259499160,1cyclictest0-21swapper/123:10:171
2259499160,15cyclictest24123-21cpuspeed_turbos21:05:131
2259499160,15cyclictest1-21systemd20:00:021
2259499160,15cyclictest0-21swapper/120:55:131
2259499160,15cyclictest0-21swapper/120:05:021
2259499160,15cyclictest0-21swapper/119:20:141
2259499160,15cyclictest0-21swapper/119:10:141
2259499160,15cyclictest0-21swapper/100:05:221
22590991614,1cyclictest22534-21ntp_kernel_pll_21:00:190
22590991614,1cyclictest0-21swapper/023:55:000
22590991614,1cyclictest0-21swapper/022:40:180
22590991614,1cyclictest0-21swapper/021:55:430
22590991614,1cyclictest0-21swapper/021:50:110
22590991614,1cyclictest0-21swapper/021:10:190
22590991614,1cyclictest0-21swapper/020:55:130
22590991614,1cyclictest0-21swapper/000:00:070
22590991613,2cyclictest9759-21/usr/sbin/munin00:30:130
2259099160,2cyclictest31627-21cat19:25:150
2259099160,2cyclictest31627-21cat19:25:150
2259099160,1cyclictest0-21swapper/021:45:150
2259099160,1cyclictest0-21swapper/021:20:150
2259099160,15cyclictest31594-21irqstats22:15:160
2259099160,15cyclictest19238-21cpu20:00:120
2259099160,15cyclictest121852sleep022:37:030
2259099160,15cyclictest1181-21/usr/sbin/munin00:15:120
2259099160,15cyclictest0-21swapper/023:15:120
2259099160,15cyclictest0-21swapper/020:45:130
2259099160,15cyclictest0-21swapper/020:10:170
2259099160,15cyclictest0-21swapper/020:05:110
2259099160,15cyclictest0-21swapper/019:55:130
2259099160,15cyclictest0-21swapper/000:10:160
2259499150,1cyclictest0-21swapper/121:10:171
22590991513,1cyclictest0-21swapper/019:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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