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2026-03-25 - 16:57
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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 Mar 25, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14464993120,10cyclictest0-21swapper/110:05:201
1446899261,20cyclictest17821-21head08:10:172
1446899257,15cyclictest0-21swapper/208:42:332
14468992414,9cyclictest0-21swapper/211:42:382
14468992414,9cyclictest0-21swapper/211:42:382
14468992321,1cyclictest19002-21cat10:05:212
1446499230,5cyclictest0-21swapper/109:15:561
1446899220,21cyclictest870-21systemd-logind09:08:512
1446899220,18cyclictest0-21swapper/207:46:192
1446899220,18cyclictest0-21swapper/207:46:192
14464992213,0cyclictest0-21swapper/111:42:391
14464992213,0cyclictest0-21swapper/111:42:381
1446399220,18cyclictest0-21swapper/011:42:350
1446399220,18cyclictest0-21swapper/011:42:350
1446499214,11cyclictest0-21swapper/107:27:251
14463992121,0cyclictest0-21swapper/010:05:200
14463992114,6cyclictest870-21systemd-logind10:48:510
14468992018,1cyclictest0-21swapper/209:23:092
14468992016,3cyclictest22670-21sort12:09:012
1446899200,5cyclictest0-21swapper/211:25:142
14464992017,2cyclictest31612-21sendmail07:40:011
1446499200,4cyclictest17822-21cut08:10:171
1446399204,15cyclictest0-21swapper/010:26:420
14463992018,1cyclictest9-21ksoftirqd/010:55:010
14468991913,3cyclictest0-21swapper/209:17:332
1446499193,15cyclictest30975-21cat11:25:161
1446499192,2cyclictest27153-21needreboot12:15:161
1446399192,16cyclictest31573-21expr10:30:100
14463991917,1cyclictest0-21swapper/007:47:120
14463991917,1cyclictest0-21swapper/007:47:120
1446899182,15cyclictest25676-21chrt07:25:412
14468991817,1cyclictest28-21ksoftirqd/211:22:272
14468991816,1cyclictest0-21swapper/211:55:132
14468991816,1cyclictest0-21swapper/208:04:522
14468991815,2cyclictest8834-21nfsd410:45:172
14468991814,3cyclictest10456-21nvmesmart_nvme011:45:192
1446899181,2cyclictest14218-21grep10:00:122
1446899181,16cyclictest0-21swapper/211:02:332
1446899180,1cyclictest0-21swapper/209:00:162
1446899180,17cyclictest426-21systemd-udevd07:42:512
1446899180,17cyclictest0-21swapper/209:50:332
1446899180,16cyclictest23304-21munin-run07:25:002
1446499182,15cyclictest9611-21grep07:55:171
14464991815,2cyclictest14971-21https07:10:011
1446499181,16cyclictest10489-21cut08:55:141
1446499180,3cyclictest5111-21munin-run07:50:011
1446499180,3cyclictest5111-21munin-run07:50:001
1446499180,3cyclictest27683-21nfsd407:30:181
1446499180,3cyclictest0-21swapper/107:15:171
1446499180,17cyclictest870-21systemd-logind12:06:511
1446499180,16cyclictest3058-21rs:main1
1446399182,15cyclictest295842sleep008:31:140
14463991816,1cyclictest0-21swapper/012:00:200
14463991816,1cyclictest0-21swapper/011:06:300
1446399180,3cyclictest3414-21master11:20:010
1446399180,16cyclictest399-20systemd-journal09:55:010
1446399180,15cyclictest3989-21H222:10:210
14468991715,1cyclictest0-21swapper/210:43:192
14468991714,2cyclictest2780-21nfsd410:35:172
14468991714,2cyclictest14999-21cut08:05:192
14468991713,3cyclictest5601-21lxd09:10:582
1446899170,2cyclictest399-20systemd-journal10:30:022
1446899170,2cyclictest3657-21expr09:40:122
1446899170,2cyclictest30302-21apache_processe08:35:122
1446899170,2cyclictest27170-21needreboot12:15:162
1446899170,2cyclictest23987-21debian-sa111:15:012
1446899170,2cyclictest11379-21tr08:55:202
1446899170,1cyclictest0-21swapper/208:31:372
1446899170,16cyclictest843-21systemd-network09:57:112
1446899170,16cyclictest3985-21H222:10:212
1446899170,16cyclictest29864-21smartctl07:35:152
1446899170,16cyclictest2872-21systemd-logind10:18:512
1446899170,16cyclictest27380-21sed10:20:222
1446899170,16cyclictest24744-21ps12:10:192
1446899170,16cyclictest22243-21grep08:20:152
1446899170,16cyclictest18708-21awk07:15:172
1446899170,16cyclictest1829-21systemd-journal11:15:012
1446899170,16cyclictest1751-21ntp_offset11:30:172
1446899170,16cyclictest14694-21grep10:55:192
1446499178,5cyclictest0-21swapper/111:50:131
14464991715,1cyclictest76732chrt07:53:111
14464991714,2cyclictest3976-21H222:10:211
14464991714,2cyclictest31223-21sed08:35:171
14464991714,2cyclictest22534-21nfsd411:10:171
14464991714,2cyclictest17997-21proxymap11:04:481
14464991714,2cyclictest15227-21tr11:55:161
14464991714,2cyclictest13297-21idleruntime09:00:161
1446499171,15cyclictest17315-21grep12:00:111
14464991710,2cyclictest4210-21sort10:39:011
1446499170,2cyclictest8807-21expr10:45:171
1446499170,2cyclictest3549-21http08:45:011
1446499170,2cyclictest3351-21lxd08:06:581
1446499170,2cyclictest26744-21latency_hist11:20:011
1446499170,2cyclictest24370-21open_inodes10:15:201
1446499170,2cyclictest10561-21pzem_current11:45:191
1446499170,16cyclictest843-21systemd-network09:54:061
1446499170,16cyclictest566-21fschecks_time09:35:151
1446499170,16cyclictest4018-21fschecks_count11:35:131
1446499170,16cyclictest3414-21master08:50:531
1446499170,16cyclictest3414-21master08:27:361
1446499170,16cyclictest32402-21cstates07:40:131
1446499170,16cyclictest3053-21systemd-logind09:08:511
1446499170,16cyclictest21872-21awk07:20:191
1446499170,16cyclictest15980-21sed10:00:201
1446499170,15cyclictest4035-21H222:10:211
1446399172,1cyclictest0-21swapper/008:11:320
14463991715,1cyclictest9-21ksoftirqd/009:35:000
14463991715,1cyclictest14986-21gdbus07:10:010
14463991714,2cyclictest993-21dbus-daemon09:10:200
14463991714,2cyclictest31613-21expr12:25:130
14463991714,2cyclictest3053-21systemd-logind10:12:510
14463991714,2cyclictest29429-21munin-plugin-st09:30:010
14463991714,2cyclictest26694-21/usr/sbin/munin07:30:130
14463991714,2cyclictest26137-21cron11:17:000
14463991714,2cyclictest22144-21grep09:15:170
14463991714,2cyclictest19440-21pzem_power07:15:210
14463991714,2cyclictest15503-21latency11:55:170
14463991714,2cyclictest10455-21nvmesmart_nvme011:45:180
14463991714,2cyclictest0-21swapper/008:40:170
14463991713,3cyclictest3976-21H222:10:210
1446399170,2cyclictest3981-21H222:10:210
1446399170,2cyclictest25860-21latency08:25:190
1446399170,2cyclictest25276-21munin-run10:20:010
1446399170,2cyclictest1441-21sendmail-mta12:11:150
1446399170,2cyclictest13919-21tr08:05:140
1446399170,2cyclictest10633-21/usr/sbin/munin08:55:140
1446399170,1cyclictest0-21swapper/012:24:550
1446399170,16cyclictest835-21df11:30:130
1446399170,16cyclictest6333-21ntp_offset12:35:170
1446399170,16cyclictest426-21systemd-udevd12:16:520
1446399170,16cyclictest3053-21systemd-logind07:28:520
1446399170,16cyclictest22368-21/usr/sbin/munin11:10:160
1446399170,16cyclictest21871-21netstat07:20:190
1446399170,16cyclictest2069-21systemd-udevd07:36:520
1446399170,16cyclictest15459-21grep10:00:180
1446399170,16cyclictest0-21swapper/009:35:150
14468991614,1cyclictest0-21swapper/212:20:182
14468991614,1cyclictest0-21swapper/207:10:152
14468991613,2cyclictest2069-21systemd-udevd07:30:522
1446899160,1cyclictest0-21swapper/211:35:112
1446899160,1cyclictest0-21swapper/208:26:372
1446899160,1cyclictest0-21swapper/208:15:192
1446899160,16cyclictest0-21swapper/207:50:552
1446899160,15cyclictest7664-21df_inode08:50:162
1446899160,15cyclictest29571-21seq09:30:092
1446899160,15cyclictest28405-21apache_accesses10:25:122
1446899160,15cyclictest172282sleep212:00:022
1446899160,15cyclictest10341-21expr10:50:122
1446899160,15cyclictest0-21swapper/212:35:162
1446899160,15cyclictest0-21swapper/212:30:012
1446899160,15cyclictest0-21swapper/212:25:172
1446899160,15cyclictest0-21swapper/211:50:152
1446899160,15cyclictest0-21swapper/211:05:172
1446899160,15cyclictest0-21swapper/210:10:132
1446899160,15cyclictest0-21swapper/209:35:142
1446899160,15cyclictest0-21swapper/209:25:132
1446899160,15cyclictest0-21swapper/208:45:152
14464991614,1cyclictest31677-21expr10:30:111
14464991614,1cyclictest0-21swapper/112:10:141
14464991614,1cyclictest0-21swapper/111:05:161
14464991614,1cyclictest0-21swapper/110:25:171
14464991614,1cyclictest0-21swapper/110:10:171
14464991614,1cyclictest0-21swapper/109:55:111
14464991614,1cyclictest0-21swapper/109:45:131
14464991614,1cyclictest0-21swapper/109:40:151
14464991614,1cyclictest0-21swapper/109:34:111
14464991614,1cyclictest0-21swapper/108:45:201
14464991614,1cyclictest0-21swapper/108:30:131
14464991614,1cyclictest0-21swapper/108:15:211
14464991613,2cyclictest399-20systemd-journal08:00:011
14464991613,2cyclictest13758-21if_enp1s010:55:141
1446499160,2cyclictest5422-21grep10:40:131
1446499160,1cyclictest25817-21grep10:20:141
1446499160,15cyclictest3976-21H222:10:211
1446499160,15cyclictest27174-21cat09:25:131
1446499160,15cyclictest1073-21chrt12:25:331
1446499160,15cyclictest10501-21expr10:50:131
1446499160,15cyclictest0-21swapper/112:35:151
1446499160,15cyclictest0-21swapper/112:20:131
1446499160,15cyclictest0-21swapper/108:20:151
14463991615,1cyclictest0-21swapper/008:15:170
14463991614,1cyclictest0-21swapper/012:05:140
14463991614,1cyclictest0-21swapper/009:05:140
14463991614,1cyclictest0-21swapper/008:45:030
14463991613,2cyclictest1375-21munin-node10:40:110
1446399161,1cyclictest5240-21timerwakeupswit11:35:200
1446399160,1cyclictest1678-21tr10:35:140
1446399160,1cyclictest0-21swapper/009:00:120
1446399160,15cyclictest8676-21/usr/sbin/munin09:50:110
1446399160,15cyclictest6346-21expr09:45:130
1446399160,15cyclictest5750-21expr07:50:150
1446399160,15cyclictest31737-21sed11:25:200
1446399160,15cyclictest17136-21chrt11:00:180
1446399160,15cyclictest14348-21ntp_states10:55:180
1446399160,15cyclictest12128-21expr11:50:130
1446399160,15cyclictest0-21swapper/012:30:180
1446399160,15cyclictest0-21swapper/009:40:130
1446399160,15cyclictest0-21swapper/009:20:230
1446399160,15cyclictest0-21swapper/008:50:150
1446399160,15cyclictest0-21swapper/008:00:140
1446399160,15cyclictest0-21swapper/007:55:160
1446399160,15cyclictest0-21swapper/007:40:190
1446499150,14cyclictest0-21swapper/112:30:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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