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2026-07-10 - 04:31
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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 Fri Jul 10, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4022992421,2cyclictest20930-21grep23:25:181
4022992421,2cyclictest20930-21grep23:25:171
402999230,5cyclictest0-21swapper/221:47:032
402999230,5cyclictest0-21swapper/221:47:032
402299236,13cyclictest0-21swapper/100:14:091
402999220,4cyclictest0-21swapper/220:35:162
402999220,18cyclictest0-21swapper/220:55:152
402299210,17cyclictest0-21swapper/120:13:081
4029992018,1cyclictest0-21swapper/221:06:582
4029992017,2cyclictest30956-21tr22:45:202
4022992018,1cyclictest21-21ksoftirqd/119:31:501
402199202,2cyclictest28105-21cpuspeed_turbos23:40:140
4021992015,3cyclictest6684-21grep19:15:000
402999193,2cyclictest3981-21H222:10:212
402999192,16cyclictest3989-21H222:10:212
402999192,16cyclictest3983-21H222:10:212
402999192,16cyclictest10075-21cut19:20:122
402999192,16cyclictest0-21swapper/223:09:142
402999190,16cyclictest3983-21H222:10:212
402999190,16cyclictest3983-21H222:10:212
402999190,16cyclictest3981-21H222:10:212
402999190,16cyclictest3981-21H222:10:212
402999190,16cyclictest3976-21H222:10:212
402299193,15cyclictest28075-21timerandwakeup00:35:231
402299193,15cyclictest0-21swapper/120:55:181
402299193,15cyclictest0-21swapper/120:24:521
402299192,16cyclictest11044-21nfsd419:20:181
402299192,15cyclictest3976-21H222:10:211
4022991915,2cyclictest17796-21cut21:25:211
402299190,18cyclictest9022-21http_loadtime21:10:131
402299190,18cyclictest0-21swapper/123:30:021
402299190,17cyclictest0-21swapper/123:59:571
4021991917,1cyclictest0-21swapper/022:50:210
4021991916,2cyclictest4099-21H222:10:210
4021991916,2cyclictest3979-21H222:10:210
4021991916,2cyclictest1100-21snmpd00:23:300
4021991915,3cyclictest7254-21fschecks_time22:05:150
402199190,2cyclictest3985-21H222:10:210
402199190,18cyclictest0-21swapper/022:55:150
402199190,16cyclictest3991-21H222:10:210
402199190,16cyclictest3983-21H222:10:210
402999182,2cyclictest28084-21expr23:40:132
402999182,15cyclictest0-21swapper/223:15:252
4029991816,1cyclictest0-21swapper/223:50:052
4029991816,1cyclictest0-21swapper/223:50:042
4029991816,1cyclictest0-21swapper/223:45:102
4029991816,1cyclictest0-21swapper/222:18:422
4029991815,2cyclictest4856-21ntp_kernel_pll_20:05:192
4029991815,2cyclictest3985-21H222:10:212
4029991815,2cyclictest19142-21wc21:30:002
402999181,2cyclictest3976-21H222:10:212
402999181,2cyclictest15325-21apt-config20:25:012
402999181,16cyclictest31321-21cat21:50:182
402999180,3cyclictest26526-21gpgconf19:50:022
402999180,3cyclictest24544-21sshd23:34:072
402999180,2cyclictest3991-21H222:10:212
402999180,2cyclictest3991-21H222:10:212
402999180,2cyclictest3981-21H222:10:212
402999180,17cyclictest3981-21H222:10:212
402999180,16cyclictest4099-21H222:10:212
402999180,16cyclictest3979-21H222:10:212
402999180,16cyclictest28816-21python322:45:002
4022991815,2cyclictest3983-21H222:10:211
4022991815,2cyclictest18161-21nfsd423:20:181
4022991815,2cyclictest0-21swapper/122:35:171
4022991815,2cyclictest0-21swapper/122:35:171
4022991814,3cyclictest3991-21H222:10:211
4022991814,3cyclictest3985-21H222:10:211
4022991814,3cyclictest3981-21H222:10:211
402299181,16cyclictest9703-21nfsd423:05:201
402299181,16cyclictest3450-21gsd-color21:05:201
402299180,3cyclictest3976-21H222:10:211
402299180,2cyclictest4035-21H222:10:211
402299180,2cyclictest3983-21H222:10:211
402299180,2cyclictest3979-21H222:10:211
402299180,17cyclictest17686-21cron20:30:011
402299180,17cyclictest1300-21lxd22:56:501
402299180,16cyclictest3987-21H222:10:211
402199183,1cyclictest0-21swapper/000:18:550
4021991816,1cyclictest0-21swapper/022:15:240
4021991815,2cyclictest8451-21ntp_kernel_pll_19:15:180
4021991815,2cyclictest3981-21H222:10:210
4021991815,2cyclictest27712-21cut20:45:170
4021991814,3cyclictest3976-21H222:10:210
4021991814,3cyclictest26112-21http19:50:010
4021991814,3cyclictest1348-21lxd22:46:500
4021991813,2cyclictest3979-21H222:10:210
402199181,2cyclictest5624-21timerandwakeup22:00:220
402199181,15cyclictest13734-21needreboot19:25:190
402199180,3cyclictest3981-21H222:10:210
402199180,3cyclictest3981-21H222:10:210
402199180,2cyclictest3976-21H222:10:210
402199180,2cyclictest32089-21cpuspeed_turbos20:55:130
402199180,16cyclictest3987-21H222:10:210
402199180,15cyclictest3991-21H222:10:210
4029991716,1cyclictest28-21ksoftirqd/220:11:282
4029991714,2cyclictest5820-21proc_pri19:10:222
4029991714,2cyclictest3981-21H222:10:212
4029991714,2cyclictest3976-21H222:10:212
4029991714,2cyclictest3976-21H222:10:212
4029991714,2cyclictest3976-21H222:10:212
4029991714,2cyclictest3048-21/usr/sbin/munin21:00:152
4029991714,2cyclictest29355-21cpuspeed_turbos20:50:132
4029991714,2cyclictest26442-21/usr/sbin/munin20:45:162
4029991714,2cyclictest24709-21nfsd422:35:172
4029991714,2cyclictest24709-21nfsd422:35:172
4029991714,2cyclictest24531-21latency_hist21:40:002
4029991714,2cyclictest11836-21munin-run20:20:012
4029991713,3cyclictest4099-21H222:10:212
4029991713,3cyclictest0-21swapper/200:21:292
402999171,2cyclictest3991-21H222:10:212
402999171,15cyclictest23619-21latency_hist19:45:002
402999170,2cyclictest7062-21cpuspeed_turbos00:00:142
402999170,2cyclictest3979-21H222:10:212
402999170,16cyclictest574-21date22:50:162
402999170,16cyclictest4699-21if_lxdbr022:00:162
402999170,16cyclictest3983-21H222:10:212
402999170,16cyclictest2161-21smartctl21:55:192
402999170,16cyclictest18147-21grep23:20:182
402999170,16cyclictest18094-21/usr/sbin/munin20:30:202
402999170,16cyclictest13830-21sendmail_mailtr20:20:212
402999170,16cyclictest0-21swapper/223:35:142
402999170,16cyclictest0-21swapper/222:31:052
402999170,16cyclictest0-21swapper/200:35:182
4022991715,1cyclictest4035-21H222:10:211
4022991715,1cyclictest16830-21ps00:15:201
4022991714,2cyclictest800-21cut21:55:141
4022991714,2cyclictest7509-21fschecks_count00:00:151
4022991714,2cyclictest5079-21awk22:00:171
4022991714,2cyclictest3987-21H222:10:211
4022991714,2cyclictest3981-21H222:10:211
4022991714,2cyclictest3981-21H222:10:211
4022991714,2cyclictest30583-21ntp_states20:50:181
4022991714,2cyclictest29354-21ntp_states23:40:201
4022991714,2cyclictest18236-21df22:25:161
4022991714,2cyclictest14613-21expr23:15:161
4022991714,2cyclictest14495-21snapd20:35:311
4022991714,2cyclictest11126-21seq20:16:391
4022991714,1cyclictest0-21swapper/121:50:191
402299171,15cyclictest2613-21grep21:00:141
402299170,2cyclictest4099-21H222:10:211
402299170,2cyclictest3273-21apache_processe20:05:121
402299170,2cyclictest23742-21apache_processe20:40:111
402299170,2cyclictest22192-21grep19:40:181
402299170,2cyclictest14501-21snapd19:52:581
402299170,2cyclictest1300-21lxd19:38:501
402299170,1cyclictest0-21swapper/121:45:101
402299170,1cyclictest0-21swapper/121:45:101
402299170,16cyclictest3985-21H222:10:211
402299170,16cyclictest3983-21H222:10:211
402299170,16cyclictest3983-21H222:10:211
402299170,16cyclictest3981-21H222:10:211
402299170,16cyclictest3976-21H222:10:211
402299170,16cyclictest3976-21H222:10:211
402299170,16cyclictest24934-21ntpq00:30:171
402299170,16cyclictest20594-21dpkg22:30:001
402299170,16cyclictest1300-21lxd00:20:351
402299170,16cyclictest1282-21tr23:50:141
402299170,16cyclictest1282-21tr23:50:141
402299170,16cyclictest12313-21cpuspeed_turbos22:15:181
402299170,15cyclictest0-21swapper/119:29:501
402199172,1cyclictest17752-21cpuspeed_turbos22:25:150
4021991715,1cyclictest0-21swapper/020:06:470
4021991714,2cyclictest3991-21H222:10:210
4021991714,2cyclictest3985-21H222:10:210
4021991714,2cyclictest3983-21H222:10:210
4021991714,2cyclictest3981-21H222:10:210
4021991714,2cyclictest3979-21H222:10:210
4021991714,2cyclictest3976-21H222:10:210
4021991714,2cyclictest3976-21H222:10:210
4021991714,2cyclictest28817-21nfsd421:45:180
4021991714,2cyclictest28817-21nfsd421:45:180
4021991714,2cyclictest20841-21apache_processe20:35:110
4021991714,2cyclictest20354-21basename23:25:160
4021991714,2cyclictest20354-21basename23:25:160
4021991714,2cyclictest19442-21nfsd420:30:190
4021991714,2cyclictest19246-21apache_processe21:30:110
4021991714,2cyclictest16917-21pzem_energy20:25:200
4021991714,2cyclictest15237-21expr22:20:150
402199171,15cyclictest5473-21cpu21:05:150
402199170,2cyclictest7312-21sendmail_mailqu23:00:210
402199170,2cyclictest7312-21sendmail_mailqu23:00:210
402199170,2cyclictest4035-21H222:10:210
402199170,2cyclictest23989-21ls20:40:120
402199170,2cyclictest22262-21nfsd419:40:180
402199170,1cyclictest3985-21H222:10:210
402199170,16cyclictest3985-21H222:10:210
402199170,16cyclictest3985-21H222:10:210
402199170,16cyclictest23500-21apache_processe22:35:110
402199170,16cyclictest23500-21apache_processe22:35:100
402199170,16cyclictest22524-21cstates21:35:130
402199170,16cyclictest22019-21cut00:25:200
402199170,16cyclictest18687-21cut19:35:150
402199170,16cyclictest13882-21grep00:10:190
402199170,16cyclictest12553-21pzem_current21:15:230
402199170,16cyclictest10018-21cpuspeed_turbos19:20:130
402199170,15cyclictest3981-21H222:10:210
402199170,15cyclictest20681-21chmod22:30:010
4029991614,1cyclictest0-21swapper/223:25:142
4029991614,1cyclictest0-21swapper/223:25:132
4029991614,1cyclictest0-21swapper/223:00:202
4029991614,1cyclictest0-21swapper/223:00:202
4029991613,2cyclictest3981-21H222:10:212
402999160,15cyclictest18039-21/usr/sbin/munin19:35:172
4022991614,1cyclictest0-21swapper/119:45:141
4022991614,1cyclictest0-21swapper/100:25:161
402299160,1cyclictest30718-21strings22:45:181
4021991614,1cyclictest0-21swapper/023:10:110
402199160,15cyclictest9630-21ls20:15:130
402199160,15cyclictest4743-21entropy23:55:150
402199160,15cyclictest4035-21H222:10:210
402199160,15cyclictest244342chrt23:32:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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