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2025-11-19 - 10:32
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 highest latencies:
System rack7slot8.osadl.org (updated Wed Nov 19, 2025 01:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17632211830,10sleep017633-21cat19:05:230
185819917128,120cyclictest1424-21nginx23:27:400
18581991707,42cyclictest15062-21apt-get23:07:090
185819916610,104cyclictest29961-21munin-run00:00:020
185819916542,112cyclictest17136-21runrttasks23:10:410
185819916410,95cyclictest21432-21apt-get19:18:180
185819916047,95cyclictest10150irq/55-4a10000022:10:520
18581991598,127cyclictest24624-21chrt19:30:120
185819915937,105cyclictest10250irq/56-4a10000019:21:210
185819915929,111cyclictest10371-21wget20:40:160
18581991588,113cyclictest4373-21apt-get20:17:070
18581991587,131cyclictest7718-21cmp22:35:190
18581991567,20cyclictest16889-21wget21:05:190
18581991567,127cyclictest30478-21apt-get22:02:100
18581991567,103cyclictest24658-21irqstats21:35:330
18581991566,128cyclictest28214-21mailstats23:51:370
185819915621,115cyclictest4942-21wget20:20:140
185819915620,118cyclictest11738-21chrt20:45:290
18581991557,22cyclictest5025-21users00:26:360
18581991557,105cyclictest1356-21snmpd22:35:040
185819915514,104cyclictest1356-21snmpd23:04:230
18581991547,19cyclictest19515-21ntp_states19:11:210
18581991547,126cyclictest9689-21seq20:36:340
18581991547,126cyclictest32550-21runrttasks22:05:350
18581991539,122cyclictest23430-21memory21:30:350
18581991538,126cyclictest28192-21wget21:50:150
18581991537,108cyclictest18440-21ntp_states23:15:430
185819915327,107cyclictest1356-21snmpd21:19:010
185819915318,116cyclictest21695-21apt-get23:30:370
18581991528,16cyclictest13140-21ntp_states20:50:440
18581991528,125cyclictest530-21ntp_states00:10:430
18581991526,15cyclictest7993-21/usr/sbin/munin20:30:540
185819915219,116cyclictest1424-21nginx00:37:210
18581991517,21cyclictest18145-21wget21:10:140
18581991516,109cyclictest20828-21df21:20:210
185819915142,92cyclictest3650irq/20-4900000020:05:480
185819915127,110cyclictest26883-21seq21:45:160
18581991509,120cyclictest2313-21/usr/sbin/munin22:15:310
18581991508,22cyclictest28949-21ntp_states19:45:430
185819915049,90cyclictest6441-21sshd20:25:350
18581991498,18cyclictest14287-21chrt20:55:330
18581991498,127cyclictest15481-21fw_forwarded_lo21:00:300
18581991497,19cyclictest27426-21wget19:40:200
18581991488,97cyclictest25921-21irqstats21:40:340
18581991487,22cyclictest760-21systemd-journal19:56:350
185819914845,93cyclictest30422-21runrttasks19:50:530
185819914822,91cyclictest10250irq/56-4a10000019:28:350
18581991477,122cyclictest9893-21sshd22:43:320
18581991476,14cyclictest27167-21latency_hist19:40:030
185819914728,106cyclictest760-21systemd-journal22:56:360
18581991467,15cyclictest1356-21snmpd23:49:340
18581991467,14cyclictest760-21systemd-journal23:20:370
18581991467,14cyclictest22062-21df21:25:180
185819914623,105cyclictest30125-21/usr/sbin/munin00:00:360
185819914611,123cyclictest23678-21fw_forwarded_lo23:35:290
18581991457,125cyclictest1356-21snmpd22:24:150
185819914544,89cyclictest2409-21runrttasks00:18:460
185819914543,91cyclictest30507-21runrttasks22:00:040
185819914538,94cyclictest10387-21df22:45:190
185819914317,109cyclictest2766-21wget00:20:310
185819914310,16cyclictest353-21awk20:00:460
18581991426,17cyclictest1356-21snmpd22:25:190
18581991426,116cyclictest2762-21ntp_states20:10:400
185819914232,99cyclictest12044-21users22:50:500
185819914224,105cyclictest5927-21sshd00:30:370
185819914117,105cyclictest24818-21wget23:40:180
185819913725,94cyclictest31358-21/usr/sbin/munin00:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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