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2026-04-20 - 04:02
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot7.osadl.org (updated Mon Apr 20, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24987213511,89sleep225077-21grep18:58:372
256219910864,37cyclictest27393-21ssh00:32:481
256179910842,27cyclictest25626-21latency_hist19:02:540
256179910755,43cyclictest12358-21ssh21:23:020
256219910443,9cyclictest0-21swapper/123:23:231
256219910438,12cyclictest0-21swapper/120:28:161
256219910438,12cyclictest0-21swapper/120:28:161
256179910445,22cyclictest20357-21sh00:19:260
256179910342,24cyclictest21722-21tune2fs20:28:130
256179910342,24cyclictest21722-21tune2fs20:28:130
256179910338,22cyclictest24335-21sh00:27:270
256219910144,8cyclictest0-21swapper/123:53:251
256219910144,8cyclictest0-21swapper/123:53:251
256219910132,13cyclictest0-21swapper/120:58:231
256179910147,50cyclictest0-21swapper/020:23:020
256179910141,29cyclictest24479-21latency_hist23:32:520
256179910141,29cyclictest24479-21latency_hist23:32:520
256179910140,37cyclictest882-21latency21:03:170
256179910034,23cyclictest0-21swapper/000:13:160
25621999936,12cyclictest0-21swapper/119:33:021
2562199993,48cyclictest6534-21sshd19:42:521
2562199993,39cyclictest24323-21cron23:32:481
2562199993,39cyclictest24323-21cron23:32:481
25617999944,44cyclictest9457-21apt-get22:12:490
25617999943,47cyclictest32530-21diskmemload22:05:460
25617999940,24cyclictest7073-21cpuspeed23:58:070
25617999939,22cyclictest8759-21memory19:48:180
25617999939,22cyclictest8759-21memory19:48:180
2562199985,36cyclictest3507-21idleruntime-cro22:02:491
25617999839,33cyclictest32530-21diskmemload23:03:020
2562199975,34cyclictest10217-21fschecks_time19:53:131
2562199974,39cyclictest15095-21cpu20:08:571
25621999742,13cyclictest9676-21munin-plugin-st23:07:511
25621999733,15cyclictest0-21swapper/119:28:221
25617999742,23cyclictest27749-21grep21:48:170
25617999739,23cyclictest311-21ssh23:46:420
25617999739,23cyclictest311-21ssh23:46:420
25617999738,23cyclictest29518-21ssh23:40:460
2562199964,42cyclictest28110-21fschecks_time19:08:151
2562199964,42cyclictest28110-21fschecks_time19:08:151
25621999637,13cyclictest0-21swapper/120:22:531
25617999640,17cyclictest26687-21grep20:43:150
25617999638,23cyclictest3837-21irqstats19:33:160
2562199953,28cyclictest12939-21/usr/sbin/munin22:18:131
2562199953,28cyclictest12939-21/usr/sbin/munin22:18:131
25617999550,38cyclictest1162-21ls21:58:120
25617999542,22cyclictest10060-21runrttasks22:13:050
25617999538,34cyclictest15677-21latency_hist22:22:520
25617999538,34cyclictest15677-21latency_hist22:22:520
2562199943,36cyclictest1589-21latency_hist19:27:531
2562199933,43cyclictest30911-21sh20:57:491
2562199933,37cyclictest9076-21grep19:48:271
2562199933,37cyclictest9076-21grep19:48:271
25617999342,42cyclictest1331-21ssh22:52:590
25617999341,12cyclictest15010-21apt-get20:08:020
25617999338,22cyclictest25955-21ssh23:33:560
25617999338,19cyclictest275372cut22:42:520
25617999336,24cyclictest19447-21ntp_states23:23:190
25617999332,24cyclictest25867-21unixbench_singl00:28:280
25632999270,15cyclictest25608-21cyclictest00:07:522
2562199925,38cyclictest506-21munin-run21:57:501
2562199925,38cyclictest506-21munin-run21:57:501
2562199925,35cyclictest15631-21latency_hist23:17:511
25621999231,12cyclictest0-21swapper/119:02:551
25617999254,30cyclictest18377-21runrttasks21:33:040
25617999247,36cyclictest0-21swapper/021:08:040
25617999245,31cyclictest16479-21/usr/sbin/munin22:23:190
25617999242,22cyclictest32530-21diskmemload21:32:520
25617999240,19cyclictest10484-21uname19:53:210
25617999236,19cyclictest6462-21systemd-run19:42:500
25621999122,26cyclictest29358-21latency_hist20:52:511
25617999138,21cyclictest13332-21ssh00:08:130
25617999137,20cyclictest29808-21ssh22:46:310
25632999054,12cyclictest181rcu_preempt23:46:102
25632999054,12cyclictest181rcu_preempt23:46:102
2562199905,39cyclictest352-21runrttasks22:55:511
2562199904,41cyclictest13244-21cut00:08:121
2562199904,33cyclictest24658-21/usr/sbin/munin23:33:181
25621999035,15cyclictest25608-21cyclictest23:47:241
25621999035,15cyclictest25608-21cyclictest23:47:241
25617999036,23cyclictest11487-21rm23:09:360
25617999036,23cyclictest11487-21rm23:09:360
25617999034,21cyclictest30913-21sh20:57:490
2562199893,31cyclictest13515-21grep20:03:151
25617998945,37cyclictest21727-21/usr/sbin/munin21:38:150
25617998945,16cyclictest32576-21ssh21:02:510
25617998941,15cyclictest2701-21ssh23:50:040
25617998940,42cyclictest14930-21seq23:15:570
25617998939,21cyclictest19676-21snmpd21:47:370
25617998937,23cyclictest18316-21ssh23:22:150
25617998936,19cyclictest8479-21rm21:16:130
25617998936,19cyclictest8479-21rm21:16:130
25617998934,19cyclictest0-21swapper/020:37:520
25617998931,28cyclictest6668-21idleruntime-cro23:57:490
25617998931,28cyclictest6668-21idleruntime-cro23:57:490
2562199884,37cyclictest21088-21latency_hist21:37:521
25617998853,30cyclictest0-21swapper/022:58:020
25617998853,30cyclictest0-21swapper/022:58:020
25617998841,12cyclictest32639-21wc19:22:530
25617998838,40cyclictest23340-21ssh22:34:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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