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2026-09-20 - 17:54
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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 Sun Sep 20, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13593213810,20sleep10-21swapper/107:04:261
13593213810,20sleep10-21swapper/107:04:261
14633991172,94cyclictest21555-21apt-get11:49:100
14633991172,94cyclictest21555-21apt-get11:49:100
146339911549,57cyclictest26726-21latency_hist07:43:530
14638991142,32cyclictest21607-21runrttasks11:49:101
14638991142,32cyclictest21607-21runrttasks11:49:101
146339911250,55cyclictest26694-21ssh10:09:180
14633991122,6cyclictest0-21swapper/010:24:030
146339911221,61cyclictest0-21swapper/012:09:260
146339911221,61cyclictest0-21swapper/012:09:260
146339910744,56cyclictest20756-21diskmemload09:59:190
146339910646,54cyclictest29177-21cpu10:14:070
146339910646,54cyclictest29177-21cpu10:14:070
146339910646,52cyclictest0-21swapper/010:04:000
146339910646,52cyclictest0-21swapper/010:04:000
146339910629,68cyclictest4576-21latency_hist09:33:530
146339910541,55cyclictest2655-21fschecks_time08:09:130
146339910442,54cyclictest11750-21latency09:44:380
146339910442,54cyclictest11750-21latency09:44:380
14633991034,88cyclictest17420-21apt-get08:54:370
146339910346,53cyclictest14625-21cyclictest09:34:140
146339910346,53cyclictest14625-21cyclictest09:34:140
14633991033,89cyclictest13345-21grep11:34:260
14642991015,41cyclictest12308-21taskset11:34:002
146389910153,38cyclictest0-21swapper/110:09:231
146339910139,53cyclictest0-21swapper/010:38:520
14633991012,60cyclictest17549-21seq11:42:330
1463399993,7cyclictest0-21swapper/011:19:020
14633999937,54cyclictest0-21swapper/007:29:120
37882980,6sleep30-21swapper/310:24:283
1463399984,87cyclictest0-21swapper/007:08:540
1463399984,87cyclictest0-21swapper/007:08:540
1463399983,58cyclictest16062-21seq07:12:410
14633999743,48cyclictest0-21swapper/011:11:400
14633999742,49cyclictest0-21swapper/011:04:270
1463399973,78cyclictest12364-21apt-get08:39:030
1463399973,78cyclictest12364-21apt-get08:39:030
1463399973,6cyclictest0-21swapper/011:44:050
1463399972,83cyclictest0-21swapper/010:54:010
14633999646,45cyclictest14625-21cyclictest07:44:170
14633999640,44cyclictest0-21swapper/012:24:150
1463399954,77cyclictest17726-21apt-get10:49:030
1463399954,77cyclictest17726-21apt-get10:49:030
14633999540,47cyclictest0-21swapper/011:33:520
1463399952,6cyclictest0-21swapper/012:29:040
14633999443,47cyclictest0-21swapper/010:44:180
14633999443,44cyclictest0-21swapper/012:19:130
14633999443,44cyclictest0-21swapper/012:19:130
14633999439,48cyclictest0-21swapper/009:39:010
14633999431,51cyclictest0-21swapper/010:33:520
14638999353,34cyclictest7326-21unixbench_multi11:24:261
14638999351,36cyclictest18121-21timerwakeupswit09:54:261
14638999346,41cyclictest12069-21latency_hist08:38:531
1463399933,7cyclictest0-21swapper/009:49:040
1463399933,70cyclictest20671-21apt-get09:04:010
14633999334,51cyclictest0-21swapper/008:28:530
14633999314,70cyclictest22545-21sshd09:09:100
14642999247,38cyclictest3585-21threads10:24:262
14642999245,39cyclictest0-21swapper/212:14:122
14638999249,36cyclictest0-21swapper/111:04:201
1463399923,74cyclictest17129-21apt-get09:54:000
14633999237,44cyclictest0-21swapper/007:13:570
1463399923,72cyclictest28410-21apt-get07:49:050
1463399922,81cyclictest31632-21fschecks_count09:24:140
1463399922,6cyclictest0-21swapper/008:49:050
1463399922,6cyclictest0-21swapper/008:49:050
14642999136,48cyclictest14122-21unixbench_multi12:29:282
14642999123,24cyclictest3238-21latency_hist11:18:532
14633999138,46cyclictest0-21swapper/007:24:160
14633999138,46cyclictest0-21swapper/007:24:160
1463399913,74cyclictest0-21swapper/007:59:020
1463399913,73cyclictest13966-21apt-get08:44:010
1463399913,62cyclictest23565-21seq07:34:030
14633999130,54cyclictest0-21swapper/012:34:090
1463399912,77cyclictest9134-21taskset08:29:030
1464299904,37cyclictest545-21munin-run08:03:492
14642999035,47cyclictest0-21swapper/210:44:132
1464299903,36cyclictest2069-21ssh09:29:082
14638999047,37cyclictest22014-21diskmemload09:15:231
1463399903,77cyclictest8575-21ssh11:27:410
14633999037,46cyclictest7249-21latency_hist08:23:530
1463399903,61cyclictest25067-21ssh11:00:030
1463399903,61cyclictest25067-21ssh11:00:030
14642998938,43cyclictest0-21swapper/211:54:252
14642998931,49cyclictest0-21swapper/212:03:522
14642998930,9cyclictest0-21swapper/211:50:272
14642998930,9cyclictest0-21swapper/211:50:272
14642998929,8cyclictest0-21swapper/209:34:262
14642998929,8cyclictest0-21swapper/209:34:262
14638998938,44cyclictest26458-21sh11:03:511
14638998938,44cyclictest26458-21sh11:03:511
1463399893,76cyclictest19059-21apt-get08:59:060
1464299884,32cyclictest18818-21sendmail12:38:492
14638998864,13cyclictest0-21swapper/108:18:521
14638998846,35cyclictest21993-21cron09:08:491
14638998845,36cyclictest4809-21diskmemload12:14:221
14638998844,36cyclictest0-21swapper/111:34:261
14638998835,46cyclictest343-21runrttasks12:06:001
1463399885,69cyclictest18508-21apt-get07:19:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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