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2026-08-11 - 08:53
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Tue Aug 11, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
467899270,15cyclictest17200-21cpuspeed_turbos23:20:151
467899250,19cyclictest0-21swapper/121:45:011
467399220,18cyclictest0-21swapper/000:28:260
468499210,5cyclictest0-21swapper/200:17:152
468499210,20cyclictest843-21systemd-network21:24:022
468499210,20cyclictest537-21irqstats22:50:192
467899210,3cyclictest0-21swapper/121:03:471
467899210,1cyclictest0-21swapper/123:10:121
467899204,1cyclictest0-21swapper/119:40:341
4678992014,5cyclictest0-21swapper/121:35:181
467399200,2cyclictest0-21swapper/020:10:190
468499193,1cyclictest19356-21http_loadtime19:35:142
468499192,16cyclictest9880-21sort21:10:212
468499192,16cyclictest0-21swapper/223:49:262
4684991917,1cyclictest0-21swapper/223:39:102
4684991916,2cyclictest12328-21idleruntime23:10:152
468499190,18cyclictest0-21swapper/222:33:272
468499190,15cyclictest0-21swapper/222:36:542
467899194,1cyclictest0-21swapper/122:24:211
467899192,2cyclictest6143-21date22:05:011
4678991917,1cyclictest0-21swapper/121:13:321
4678991917,1cyclictest0-21swapper/120:19:021
467899190,1cyclictest0-21swapper/122:34:221
467899190,18cyclictest7695-21apache_volume19:15:141
467899190,18cyclictest0-21swapper/120:50:131
467899190,18cyclictest0-21swapper/119:58:211
467399192,2cyclictest28729-21chrt22:42:420
467399192,16cyclictest31179-21expr23:45:160
467399192,16cyclictest0-21swapper/023:30:010
4673991916,2cyclictest21531-21switchtime20:35:220
4673991914,4cyclictest0-21swapper/021:25:130
4673991914,3cyclictest14504-21snapd23:55:270
467399190,3cyclictest10170-21nfsd420:15:190
467399190,16cyclictest3991-21H222:10:210
468499182,15cyclictest3989-21H222:10:212
4684991816,1cyclictest0-21swapper/220:30:132
4684991815,2cyclictest28287-21nfsd400:35:182
4684991815,2cyclictest13293-21egrep00:10:142
4684991815,2cyclictest11661-21ntp_offset00:05:212
4684991814,3cyclictest28004-21lxd22:06:492
4684991814,3cyclictest14432-21cron22:17:012
4684991814,3cyclictest0-21swapper/222:10:132
468499180,16cyclictest3979-21H222:10:212
467899182,15cyclictest0-21swapper/100:35:001
4678991816,1cyclictest0-21swapper/119:10:121
4678991815,2cyclictest21437-21latency_hist00:25:011
4678991813,1cyclictest0-21swapper/123:35:251
467899180,3cyclictest5404-21munin-run23:00:011
467399182,15cyclictest19340-21cat21:30:160
4673991815,2cyclictest28612-21sendmail_mailtr19:50:220
4673991815,2cyclictest23094-21systemctl19:40:210
4673991810,3cyclictest0-21swapper/000:18:560
4684991715,1cyclictest0-21swapper/222:21:322
4684991715,1cyclictest0-21swapper/221:30:162
4684991715,1cyclictest0-21swapper/221:05:232
4684991714,2cyclictest8395-21smartctl19:15:172
4684991714,2cyclictest31311-21netstat21:50:182
4684991714,2cyclictest30159-21expr19:55:142
4684991714,2cyclictest27730-21expr21:45:142
4684991714,2cyclictest2506-21cpu22:55:132
4684991714,2cyclictest18554-21expr22:25:142
4684991714,2cyclictest16283-21sendmail-mta21:25:032
4684991714,2cyclictest1475-21cpuspeed_turbos23:50:132
4684991714,2cyclictest10078-21nfsd420:15:202
4684991713,3cyclictest21862-21anvil23:30:142
4684991712,3cyclictest2007-21systemd-journal23:25:122
468499171,1cyclictest7605-21cpu00:00:152
468499171,1cyclictest0-21swapper/221:35:202
4684991711,4cyclictest0-21swapper/200:25:482
468499170,2cyclictest5498-21ls23:55:162
468499170,2cyclictest4577-21grep20:05:182
468499170,2cyclictest32750-21expr20:00:132
468499170,2cyclictest29512-21latency_hist19:55:012
468499170,2cyclictest20850-21master00:22:062
468499170,2cyclictest17189-21nfsd419:30:192
468499170,2cyclictest14385-21cpu20:25:122
468499170,16cyclictest8881-21cut23:05:142
468499170,16cyclictest5777-21gdbus23:00:012
468499170,16cyclictest29057-21kernelversion23:40:172
468499170,16cyclictest27072-21cut20:45:202
468499170,16cyclictest26626-21munin-plugin-st19:50:002
468499170,16cyclictest24086-21ntp_kernel_pll_20:40:192
468499170,16cyclictest20449-21fschecks_count20:35:142
468499170,16cyclictest15192-21if_lxdbr023:15:192
468499170,16cyclictest12177-21nfsd421:15:212
468499170,16cyclictest11639-21wc20:20:132
468499170,16cyclictest11639-21wc20:20:132
468499170,16cyclictest0-21swapper/221:40:122
468499170,16cyclictest0-21swapper/219:28:592
4678991716,1cyclictest21-21ksoftirqd/120:35:411
4678991714,2cyclictest4578-21cut20:05:181
4678991714,2cyclictest4389-21apache_accesses23:55:101
4678991714,2cyclictest3989-21H222:10:211
4678991714,2cyclictest3981-21H222:10:211
4678991714,2cyclictest26955-21apache_volume00:35:131
4678991714,2cyclictest26428-21df20:45:161
4678991714,2cyclictest22174-21fschecks_time00:25:131
4678991714,2cyclictest19755-21sed20:35:021
4678991714,2cyclictest17951-21users00:15:241
4678991714,2cyclictest17364-21memory21:25:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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