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2025-11-19 - 11:27
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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 Nov 19, 2025 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
226799220,18cyclictest0-21swapper/123:08:421
2262992214,4cyclictest0-21swapper/021:43:440
226799211,18cyclictest4500-21VM12:26:331
226799200,15cyclictest0-21swapper/120:55:241
2273991916,2cyclictest24720-21php7.023:39:002
2273991915,3cyclictest0-21swapper/220:35:212
2273991913,5cyclictest0-21swapper/221:35:202
227399191,16cyclictest27828-21wc23:45:002
227399190,4cyclictest30991-21cpuspeed_turbos21:55:152
227399190,18cyclictest0-21swapper/222:45:222
226799192,16cyclictest375-21cut20:05:011
2267991917,1cyclictest0-21swapper/100:26:121
2267991916,1cyclictest0-21swapper/100:05:301
226799191,2cyclictest4526-21H212:26:331
2262991918,1cyclictest9-21ksoftirqd/023:19:210
226299190,1cyclictest0-21swapper/000:20:170
226299190,18cyclictest823-21systemd-network20:20:450
227399183,1cyclictest0-21swapper/220:12:482
2273991815,2cyclictest454-21plymouthd22:25:162
2273991815,2cyclictest30990-21grep22:50:192
2273991815,2cyclictest16061-21timerwakeupswit21:25:252
2273991814,3cyclictest9105-21perf20:20:012
2273991814,3cyclictest1404-21lxd00:38:562
2273991814,2cyclictest18419-21cpuspeed_turbos00:25:142
227399180,3cyclictest29997-21snapd23:49:102
227399180,2cyclictest4536-21H212:26:332
227399180,17cyclictest823-21systemd-network21:53:572
227399180,17cyclictest0-21swapper/221:06:382
227399180,17cyclictest0-21swapper/219:45:242
227399180,16cyclictest1299-21lxd00:22:562
226799182,1cyclictest0-21swapper/120:27:271
226799182,15cyclictest21-21ksoftirqd/123:46:481
2267991815,2cyclictest16806-21smartctl22:25:201
2267991815,2cyclictest10908-21cupsd19:53:221
226799181,16cyclictest6850-21nfsd419:15:201
226799181,16cyclictest0-21swapper/120:51:461
226799180,17cyclictest414-20systemd-journal20:39:001
2262991814,3cyclictest1403-21lxd21:32:550
226299181,2cyclictest14251-21taskset20:26:030
226299181,1cyclictest0-21swapper/023:21:310
226299181,16cyclictest17780-21nfsd419:35:190
226299181,16cyclictest0-21swapper/022:04:350
226299180,17cyclictest25492-21grep21:45:160
2273991715,1cyclictest26340-21gpgv20:50:022
2273991715,1cyclictest257672sleep222:41:162
2273991715,1cyclictest0-21swapper/221:30:222
2273991714,2cyclictest8643-21latency_hist21:15:012
2273991714,2cyclictest7010-21/usr/sbin/munin19:15:222
2273991714,2cyclictest4523-21H212:26:332
2273991714,2cyclictest2116-21if_lxdbr023:55:192
2273991714,2cyclictest20831-21/usr/sbin/munin22:35:192
2273991714,2cyclictest16031-21missed_timers20:30:192
2273991714,2cyclictest14091-21latency_hist21:25:002
2273991714,2cyclictest1356-21lxd00:12:562
227399171,1cyclictest20653-21nfsd419:40:192
227399170,2cyclictest0-21swapper/200:05:222
227399170,16cyclictest7334-21expr22:10:162
227399170,16cyclictest6582-21cron22:09:002
227399170,16cyclictest4581-21H212:26:332
227399170,16cyclictest32355-21sshd20:00:352
227399170,16cyclictest1915-21grep22:00:182
227399170,16cyclictest13592-21nfsd420:25:192
227399170,16cyclictest13044-21expr22:20:162
227399170,16cyclictest12627-21pzem19:25:232
227399170,16cyclictest0-21swapper/223:15:162
227399170,16cyclictest0-21swapper/220:40:182
227399170,15cyclictest0-21swapper/221:15:242
227399170,15cyclictest0-21swapper/200:00:182
2267991714,2cyclictest4581-21H212:26:331
2267991714,2cyclictest4530-21H212:26:331
2267991714,2cyclictest31057-21expr23:50:121
2267991714,2cyclictest21858-21nfsd420:40:231
2267991714,2cyclictest2049-21systemd-journal21:52:131
2267991714,2cyclictest20262-21df21:35:161
2267991714,2cyclictest1845-21systemd-journal23:40:461
2267991714,2cyclictest15099-21if_err_lxdbr021:25:191
2267991714,2cyclictest11404-21expr19:25:161
2267991714,2cyclictest0-21swapper/119:40:021
226799171,1cyclictest0-21swapper/100:10:151
226799171,15cyclictest32362-21mailstats21:55:221
226799170,2cyclictest4530-21H212:26:331
226799170,2cyclictest3441-21gsd-color00:00:011
226799170,2cyclictest30018-21snapd20:48:511
226799170,2cyclictest25263-21processes22:40:221
226799170,2cyclictest18505-21wc21:30:241
226799170,2cyclictest14964-21sshd00:17:561
226799170,2cyclictest1299-21lxd23:24:561
226799170,2cyclictest0-21swapper/123:10:221
226799170,16cyclictest9327-21sed19:20:201
226799170,16cyclictest5833-21/usr/sbin/munin22:05:221
226799170,16cyclictest5360-21nfsd420:10:211
226799170,16cyclictest2282-21/usr/sbin/munin22:00:211
226799170,16cyclictest20324-21postgres22:33:461
226799170,16cyclictest20151-21hddtemp_smartct19:40:161
226799170,16cyclictest17025-21chrt20:31:491
226799170,16cyclictest15225-21expr19:30:231
226799170,16cyclictest13491-21awk22:20:171
226799170,16cyclictest12083-21latency_hist20:25:011
226799170,16cyclictest11583-21grep21:20:151
226799170,16cyclictest0-21swapper/123:00:211
226799170,16cyclictest0-21swapper/123:00:201
226799170,16cyclictest0-21swapper/122:20:011
2262991716,1cyclictest9-21ksoftirqd/021:27:590
2262991715,1cyclictest0-21swapper/021:55:190
2262991714,2cyclictest9155-21expr23:10:210
2262991714,2cyclictest5779-21processes00:00:200
2262991714,2cyclictest4526-21H212:26:330
2262991714,2cyclictest30455-21iwlist22:50:160
2262991714,2cyclictest30001-21snapd21:54:180
2262991714,2cyclictest23554-21cpuspeed_turbos20:45:160
2262991714,2cyclictest22192-21latency_hist23:35:010
2262991714,2cyclictest18788-21sed20:35:190
2262991714,2cyclictest10908-21cupsd23:54:520
226299171,15cyclictest0-21swapper/000:19:290
226299170,2cyclictest4581-21H212:26:330
226299170,2cyclictest4530-21H212:26:330
226299170,2cyclictest28895-21python320:55:010
226299170,2cyclictest12412-21awk19:25:200
226299170,2cyclictest10791-21if_lxdbr022:15:180
226299170,16cyclictest9058-21cat21:15:140
226299170,16cyclictest3855-21if_eno123:00:190
226299170,16cyclictest3855-21if_eno123:00:190
226299170,16cyclictest30005-21snapd20:11:310
226299170,16cyclictest27366-21sshd23:41:220
226299170,16cyclictest24991-21sed23:40:010
226299170,16cyclictest21227-21tr00:30:150
226299170,16cyclictest17695-21http_loadtime23:25:170
226299170,16cyclictest1079-21gdbus21:00:000
226299170,16cyclictest0-21swapper/022:35:240
226299170,16cyclictest0-21swapper/020:08:250
2273991614,1cyclictest18176-21nfsd423:25:192
2273991614,1cyclictest0-21swapper/223:50:132
2273991614,1cyclictest0-21swapper/223:05:172
2273991614,1cyclictest0-21swapper/222:55:192
2273991614,1cyclictest0-21swapper/222:30:162
2273991614,1cyclictest0-21swapper/221:00:142
2273991614,1cyclictest0-21swapper/220:05:182
2273991614,1cyclictest0-21swapper/219:50:182
2273991614,1cyclictest0-21swapper/219:35:162
2273991614,1cyclictest0-21swapper/200:30:152
2273991614,1cyclictest0-21swapper/200:15:162
227399161,1cyclictest0-21swapper/220:55:162
227399160,1cyclictest9491-21postgres20:20:022
227399160,15cyclictest8919-21cpuspeed_turbos23:10:222
227399160,15cyclictest5511-21latency_hist19:15:012
227399160,15cyclictest3644-21df23:00:162
227399160,15cyclictest3644-21df23:00:162
227399160,15cyclictest25676-21expr21:45:172
227399160,15cyclictest23314-21http_loadtime21:40:162
227399160,15cyclictest14525-21which19:30:202
227399160,15cyclictest14363-21grep23:20:152
227399160,15cyclictest0-21swapper/223:30:162
227399160,15cyclictest0-21swapper/222:15:232
2267991614,1cyclictest21680-21fschecks_time00:30:151
2267991614,1cyclictest0-21swapper/123:30:201
2267991614,1cyclictest0-21swapper/122:55:151
2267991614,1cyclictest0-21swapper/122:45:181
2267991614,1cyclictest0-21swapper/121:40:171
2267991614,1cyclictest0-21swapper/121:20:011
2267991614,1cyclictest0-21swapper/100:35:201
2267991613,2cyclictest27866-21grep19:55:151
226799160,2cyclictest22758-21df19:45:181
226799160,2cyclictest16949-21/usr/sbin/munin23:25:131
226799160,1cyclictest0-21swapper/122:35:241
226799160,1cyclictest0-21swapper/120:15:161
226799160,15cyclictest8111-21kernelversion22:10:191
226799160,15cyclictest533-21df21:00:161
226799160,15cyclictest3080-21tr21:05:161
226799160,15cyclictest25725-21expr21:45:161
226799160,15cyclictest0-21swapper/121:10:171
226799160,15cyclictest0-21swapper/119:12:191
226799160,15cyclictest0-21swapper/100:20:181
2262991614,1cyclictest26636-21timerandwakeup19:50:240
2262991614,1cyclictest0-21swapper/023:07:390
2262991614,1cyclictest0-21swapper/022:05:200
2262991614,1cyclictest0-21swapper/021:20:520
2262991614,1cyclictest0-21swapper/021:11:220
2262991614,1cyclictest0-21swapper/020:30:200
2262991614,1cyclictest0-21swapper/020:00:240
2262991614,1cyclictest0-21swapper/019:59:360
2262991614,1cyclictest0-21swapper/019:45:170
2262991614,1cyclictest0-21swapper/019:30:180
2262991614,1cyclictest0-21swapper/000:10:160
226299161,1cyclictest0-21swapper/019:40:190
226299160,1cyclictest101rcuc/020:40:180
226299160,1cyclictest0-21swapper/022:45:170
226299160,1cyclictest0-21swapper/019:15:160
226299160,15cyclictest9687-21expr19:20:200
226299160,15cyclictest7283-21cpuspeed_turbos22:10:150
226299160,15cyclictest4530-21H212:26:330
226299160,15cyclictest3193-21expr21:05:160
226299160,15cyclictest2013-21awk21:00:250
226299160,15cyclictest0-21swapper/023:59:110
226299160,15cyclictest0-21swapper/023:45:180
226299160,15cyclictest0-21swapper/022:43:540
226299160,15cyclictest0-21swapper/022:30:220
226299160,15cyclictest0-21swapper/022:25:230
226299160,15cyclictest0-21swapper/021:35:180
226299160,15cyclictest0-21swapper/000:35:160
2262991514,1cyclictest0-21swapper/019:10:030
2262991513,1cyclictest0-21swapper/000:25:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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