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2026-06-29 - 19:22
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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 Jun 29, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11089991183,42cyclictest24419-21ssh11:49:060
10194211411,69sleep110261-21awk06:53:491
11089991054,29cyclictest29313-21nfs4_client10:08:330
111119910446,50cyclictest0-21swapper/211:28:262
111119910446,50cyclictest0-21swapper/211:28:262
110899910446,51cyclictest0-21swapper/008:03:060
110899910446,49cyclictest0-21swapper/009:33:210
11089991043,30cyclictest20149-21latency_hist10:48:070
110899910351,45cyclictest0-21swapper/010:13:410
110899910350,45cyclictest0-21swapper/010:08:050
110899910350,45cyclictest0-21swapper/010:08:050
110899910342,53cyclictest23417-21apt-key07:33:080
110899910342,53cyclictest23417-21apt-key07:33:080
11089991033,41cyclictest20012-21fschecks_count09:53:270
11089991033,41cyclictest20012-21fschecks_count09:53:270
11089991032,26cyclictest5957-21cpuspeed11:18:210
11089991032,24cyclictest6644-21taskset12:13:150
11089991032,24cyclictest6644-21taskset12:13:150
110899910249,46cyclictest18602-21diskmemload08:58:050
110899910249,46cyclictest18602-21diskmemload08:58:050
11089991023,7cyclictest0-21swapper/009:23:180
11089991023,7cyclictest0-21swapper/009:23:180
11089991023,33cyclictest30455-21taskset11:03:450
111119910152,40cyclictest29323-21acpi11:03:152
110899910135,60cyclictest0-21swapper/012:03:260
110899910135,60cyclictest0-21swapper/012:03:260
11089991013,30cyclictest2762-21grep10:18:300
11089991013,30cyclictest2762-21grep10:18:300
11089991013,30cyclictest18957-21cpu08:58:210
11089991013,27cyclictest11098-21latency_hist06:58:080
11089991013,22cyclictest20413-21ls10:48:190
11101999910,76cyclictest13948-21sort09:43:391
11101999910,76cyclictest13948-21sort09:43:391
11089999942,51cyclictest10925-21sh08:33:230
1108999993,31cyclictest26431-21cpuspeed10:58:210
1108999992,27cyclictest29039-21taskset11:55:580
11089999843,49cyclictest4081-21ssh11:13:560
11089999843,48cyclictest0-21swapper/011:38:260
11089999836,56cyclictest0-21swapper/007:03:060
11089999826,65cyclictest0-21swapper/012:08:350
11089999740,50cyclictest18747-21fschecks_time07:18:280
11089999740,50cyclictest18747-21fschecks_time07:18:280
11089999736,51cyclictest0-21swapper/007:08:220
1108999972,27cyclictest12963-21seq10:35:170
1108999972,27cyclictest12963-21seq10:35:170
1108999972,24cyclictest23826-21latency10:53:300
11089999642,47cyclictest0-21swapper/008:03:370
11089999642,47cyclictest0-21swapper/008:03:370
11089999631,58cyclictest0-21swapper/010:43:040
11089999629,61cyclictest0-21swapper/011:43:290
11111999573,17cyclictest10622-21cstates09:38:212
11111999573,17cyclictest10622-21cstates09:38:212
1108999954,82cyclictest12606-21/usr/sbin/munin12:23:380
11089999540,49cyclictest26049-21open_inodes07:39:010
11089999540,49cyclictest26049-21open_inodes07:39:010
1108999953,42cyclictest31245-21fschecks_time09:18:280
1108999953,32cyclictest7635-21cstates08:23:220
1108999953,31cyclictest32472-21ls11:08:200
1108999953,31cyclictest29201-21ssh09:14:070
1108999953,31cyclictest29201-21ssh09:14:070
1108999953,31cyclictest23739-21/usr/sbin/munin09:58:400
1108999953,30cyclictest7949-21modprobe10:28:030
1108999952,34cyclictest12544-21rm09:41:190
1108999952,34cyclictest12544-21rm09:41:190
1108999952,30cyclictest14627-21grep09:43:580
1108999952,30cyclictest14627-21grep09:43:580
11089999515,25cyclictest4728-21fschecks_count09:28:230
1111199947,40cyclictest24949-21ssh09:08:152
1111199944,39cyclictest352-21runrttasks08:38:322
11111999431,54cyclictest0-21swapper/209:08:072
1108999944,30cyclictest25468-21needreboot09:08:320
11089999433,56cyclictest0-21swapper/011:28:060
1108999943,32cyclictest30293-21/usr/sbin/munin07:53:290
1108999943,25cyclictest9056-21/usr/sbin/munin10:28:390
11111999339,47cyclictest6536-21sendmail_mailqu08:18:352
1111199933,35cyclictest15564-21fschecks_time07:08:272
1108999933,35cyclictest13994-21fschecks_time07:04:110
1108999933,34cyclictest30756-21/usr/sbin/munin11:58:350
1108999933,34cyclictest30756-21/usr/sbin/munin11:58:350
1108999933,31cyclictest15851-21fschecks_time08:48:240
1108999933,31cyclictest13717-21modprobe08:43:040
1108999933,29cyclictest5903-21/usr/sbin/munin08:18:360
1108999932,35cyclictest10198-21awk12:18:300
1108999932,27cyclictest22272-21fschecks_time09:03:300
11111999237,48cyclictest0-21swapper/210:43:392
1111199923,39cyclictest798-21latency_hist08:03:062
1108999924,33cyclictest23581-21/usr/sbin/munin07:34:230
1108999923,34cyclictest27235-21fschecks_count07:43:260
1108999923,33cyclictest12127-21fschecks_count11:28:250
1108999923,33cyclictest12127-21fschecks_count11:28:250
1108999923,30cyclictest15604-21awk11:33:380
1108999923,29cyclictest9354-21tune2fs08:28:230
1108999923,28cyclictest2902-21fschecks_count08:08:250
1108999923,27cyclictest4299-21/usr/sbin/munin08:13:370
1108999923,24cyclictest17405-21open_inodes09:48:370
1111199914,35cyclictest23232-21latency_hist07:33:062
1111199914,35cyclictest23232-21latency_hist07:33:062
1111199914,35cyclictest17054-21latency_hist10:43:062
1111199914,34cyclictest3633-21/usr/sbin/munin12:08:382
11111999138,46cyclictest0-21swapper/207:03:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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