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2025-12-08 - 19:13
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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 Mon Dec 08, 2025 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17288993433,0cyclictest0-21swapper/012:10:140
17288993433,0cyclictest0-21swapper/012:10:140
17292992313,9cyclictest26476-21kworker/2:108:08:302
1729099236,2cyclictest20297-21latency_hist08:10:011
17288992320,2cyclictest6510-21cat07:45:170
1728899230,5cyclictest0-21swapper/009:05:140
1728899221,4cyclictest0-21swapper/011:00:000
1728899220,18cyclictest0-21swapper/011:35:180
1729299204,15cyclictest0-21swapper/212:13:392
1729299204,15cyclictest0-21swapper/212:13:382
17292992010,1cyclictest0-21swapper/211:46:042
1729099202,17cyclictest0-21swapper/108:15:011
17290991916,1cyclictest0-21swapper/111:35:151
17288991917,1cyclictest0-21swapper/009:48:230
17288991917,1cyclictest0-21swapper/009:10:210
1728899190,2cyclictest11735-21latency_hist10:45:000
1728899190,18cyclictest0-21swapper/011:31:470
1729299182,15cyclictest0-21swapper/209:51:372
1729299182,15cyclictest0-21swapper/209:18:382
17292991816,1cyclictest0-21swapper/210:03:312
17292991816,1cyclictest0-21swapper/210:03:312
1729299181,16cyclictest4535-21H212:26:332
1729299181,16cyclictest21662-21latency07:15:172
1729299180,2cyclictest4534-21H212:26:332
1729299180,17cyclictest0-21swapper/211:13:472
1729299180,16cyclictest1845-21systemd-journal11:09:002
1729099182,1cyclictest31520-21strings12:15:191
17290991816,1cyclictest0-21swapper/112:21:221
1729099180,2cyclictest4593-21H212:26:331
1729099180,17cyclictest0-21swapper/110:28:291
1728899187,0cyclictest0-21swapper/007:20:160
1728899182,15cyclictest30275-21sendmail_mailqu11:15:200
17288991817,1cyclictest0-21swapper/007:30:210
17288991816,1cyclictest11113-21grep11:40:150
17288991816,1cyclictest0-21swapper/010:15:160
17288991816,1cyclictest0-21swapper/008:00:130
17288991815,2cyclictest23715-21chrt10:08:370
17288991815,2cyclictest2012-21chrt07:39:000
17288991815,2cyclictest11690-21cat08:50:170
17288991815,2cyclictest10219-21kernelversion12:35:170
17288991814,3cyclictest0-21swapper/011:10:210
17288991814,2cyclictest1472-21lxd10:45:050
17288991814,2cyclictest0-21swapper/008:25:120
17288991813,4cyclictest0-21swapper/012:26:490
1728899180,2cyclictest8102-21fschecks_count09:40:160
1728899180,1cyclictest0-21swapper/009:18:120
1728899180,16cyclictest32287-21grep09:25:190
1728899180,16cyclictest0-21swapper/008:10:330
17292991715,2cyclictest4535-21H212:26:332
17292991715,1cyclictest28-21ksoftirqd/209:00:092
17292991714,2cyclictest8430-21cat09:40:192
17292991714,2cyclictest8134-21awk12:30:222
17292991714,2cyclictest29013-21latency_hist07:30:012
17292991714,2cyclictest27554-21cat10:15:162
17292991714,2cyclictest1603-21lxd12:28:502
17292991714,2cyclictest12542-21kernelversion07:55:212
17292991714,2cyclictest12527-21basename09:50:012
17292991714,1cyclictest0-21swapper/210:13:342
1729299171,15cyclictest535-21nfsd408:30:202
1729299171,15cyclictest0-21swapper/210:35:152
1729299170,2cyclictest4581-21H212:26:332
1729299170,2cyclictest29726-21ntp_offset09:20:192
1729299170,2cyclictest2618-21/usr/sbin/munin11:25:162
1729299170,2cyclictest14104-21vmstat10:45:252
1729299170,2cyclictest13318-21postgres11:44:382
1729299170,2cyclictest11313-21latency_hist07:55:012
1729299170,1cyclictest0-21swapper/208:45:192
1729299170,16cyclictest7423-21timerandwakeup07:45:212
1729299170,16cyclictest5683-21expr11:30:142
1729299170,16cyclictest4534-21H212:26:332
1729299170,16cyclictest31443-21pzem_energy10:20:212
1729299170,16cyclictest30514-21nfsd407:30:182
1729299170,16cyclictest23345-21irqstats09:10:182
1729299170,16cyclictest19086-21processes10:55:202
1729299170,16cyclictest18649-21fschecks_time07:10:152
1729299170,16cyclictest14987-21cat08:55:202
1729299170,16cyclictest1055-21smartctl07:35:202
1729299170,16cyclictest10353-21chrt11:38:592
1729099172,15cyclictest4593-21H212:26:331
17290991715,1cyclictest0-21swapper/107:30:131
17290991714,2cyclictest754-21needreboot07:35:181
17290991714,2cyclictest29842-21missed_timers11:15:171
17290991714,2cyclictest29814-21nfsd408:25:161
17290991714,2cyclictest25780-21latency_hist11:10:011
17290991714,2cyclictest19607-21expr09:05:141
17290991714,2cyclictest14470-21munin-run10:50:001
17290991714,2cyclictest10359-21grep09:45:141
17290991713,3cyclictest19040-21tr10:00:151
17290991713,3cyclictest19040-21tr10:00:151
1729099171,1cyclictest0-21swapper/108:35:241
1729099171,15cyclictest32286-21nfsd409:25:191
1729099170,2cyclictest26485-21fschecks_count08:20:161
1729099170,2cyclictest21624-21nfsd411:00:211
1729099170,2cyclictest13941-21awk08:00:011
1729099170,1cyclictest4530-21H212:26:331
1729099170,16cyclictest9963-21sendmail_mailqu07:50:221
1729099170,16cyclictest8802-21sessionclean10:39:001
1729099170,16cyclictest6824-21sort09:39:001
1729099170,16cyclictest6824-21sort09:39:001
1729099170,16cyclictest5674-21/usr/sbin/munin07:45:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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