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2026-07-23 - 20:47
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Thu Jul 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292928063,8sleep00-21swapper/007:04:120
156426855,8sleep10-21swapper/107:03:231
204372630,1sleep10-21swapper/109:53:311
123972630,0sleep00-21swapper/009:43:240
82932590,0sleep00-21swapper/011:43:410
3505993532,2cyclictest20613-21perl09:53:320
3505993531,3cyclictest9265-21interrupts12:28:340
3505993431,2cyclictest2195-21awk12:18:390
3505993431,2cyclictest17904-21diskstats09:08:330
3505993431,2cyclictest1638-21/usr/sbin/munin09:28:380
3505993430,3cyclictest6087-21/usr/sbin/munin09:33:410
3505993429,3cyclictest32576-21ssh09:27:340
3505993331,1cyclictest31557-21apache_volume11:33:330
3505993331,1cyclictest23064-21apache_accesses07:58:300
3505993330,2cyclictest4317-21diskstats08:33:340
3505993330,2cyclictest29283-21ssh11:29:080
3505993330,2cyclictest28500-21memory10:03:340
3505993329,3cyclictest25822-21ssh12:08:320
3505993329,3cyclictest20985-21idleruntime-cro07:53:200
3505993329,3cyclictest17221-21grep11:13:390
3505993329,3cyclictest13635-21which12:33:380
3505993230,2cyclictest6685-21/usr/sbin/munin08:38:360
3505993230,2cyclictest24702-21ls11:23:360
3505993230,1cyclictest31935-21df_inode10:08:330
3505993230,1cyclictest0-21swapper/010:48:400
3505993229,2cyclictest8043-21ssh11:02:240
3505993229,2cyclictest30267-21irqstats12:13:350
3505993229,2cyclictest22884-21memory12:03:380
3505993229,2cyclictest18779-21chrt07:45:320
3505993229,2cyclictest1554-21hddtemp_smartct10:53:330
3505993229,2cyclictest15397-21apache_accesses07:38:310
3505993229,2cyclictest14887-21ls08:58:400
3505993229,2cyclictest0-21swapper/008:03:400
3505993228,3cyclictest28729-21ssh09:22:130
3505993225,6cyclictest15304-21ntp_states11:53:370
3505993225,3cyclictest25065-21sh10:41:390
3505993224,7cyclictest8918-21sendmail_mailtr08:43:380
3505993129,1cyclictest6884-21apache_accesses10:18:300
3505993129,1cyclictest16835-21if_err_eth209:48:350
3505993129,1cyclictest15670-21apache_accesses09:03:310
3505993128,2cyclictest17428-21diskmemload09:59:530
3505993128,2cyclictest10183-21ssh09:38:550
3505993127,3cyclictest21032-21awk11:18:390
3505993127,3cyclictest13314-21ssh11:51:330
3505993122,7cyclictest27244-21hddtemp_smartct08:08:340
3505993028,2cyclictest17428-21diskmemload10:27:010
3505993028,2cyclictest10102-21ntpdc07:23:380
3505993027,2cyclictest5922-21which12:23:380
3505993027,2cyclictest31746-21sensors_temp08:18:390
3505993027,2cyclictest22928-21grep07:58:200
3505993027,2cyclictest0-21swapper/007:28:320
3505993026,3cyclictest3603-21cat11:38:370
3505993026,3cyclictest10085-21users11:03:420
3505993026,3cyclictest0-21swapper/010:18:000
3505993014,15cyclictest0-21swapper/008:28:360
3505992927,2cyclictest0-21swapper/010:32:440
3505992926,2cyclictest18754-21fschecks_time11:58:340
3505992926,2cyclictest17428-21diskmemload11:12:330
3505992926,2cyclictest13589-21munin-run08:58:210
3505992926,2cyclictest0-21swapper/010:33:550
3506992810,1cyclictest0-21swapper/112:35:031
3505992826,2cyclictest0-21swapper/007:37:120
3505992825,2cyclictest6285-21sed07:13:400
3505992825,2cyclictest27150-21/usr/sbin/munin10:43:400
3505992821,6cyclictest0-21swapper/007:18:330
3506992718,2cyclictest0-21swapper/110:30:351
3505992724,1cyclictest0-21swapper/009:13:400
3505992723,3cyclictest5303-21grep07:13:210
3505992720,5cyclictest0-21swapper/008:13:340
3506992625,1cyclictest0-21swapper/110:43:031
350699262,4cyclictest0-21swapper/112:15:021
3505992623,2cyclictest0-21swapper/008:48:530
3506992525,0cyclictest0-21swapper/111:39:591
3506992419,4cyclictest13401-21apache210:24:501
3506992418,3cyclictest0-21swapper/109:25:561
3506992416,4cyclictest0-21swapper/107:48:321
3506992410,12cyclictest0-21swapper/111:13:251
3506992319,3cyclictest13401-21apache211:21:251
3506992315,5cyclictest636-21nscd11:59:521
3506992222,0cyclictest0-21swapper/107:14:081
3506992217,4cyclictest167-21systemd-journal12:23:201
3506992217,3cyclictest0-21swapper/109:08:341
3506992213,7cyclictest29046-21ssh10:46:591
3506992210,9cyclictest0-21swapper/109:42:051
3506992210,8cyclictest0-21swapper/109:46:101
3506992210,4cyclictest0-21swapper/107:37:131
350699220,8cyclictest0-21swapper/108:38:361
350699220,18cyclictest15669-21/usr/sbin/munin09:03:371
350699215,8cyclictest0-21swapper/109:18:321
3506992120,1cyclictest0-21swapper/107:45:031
3506992119,1cyclictest13381-21apache211:02:441
3506992110,8cyclictest0-21swapper/110:35:071
3506992110,7cyclictest100150irq/106-eth1-rx11:50:321
3506992110,4cyclictest0-21swapper/110:08:001
3505992121,0cyclictest7-21ksoftirqd/008:23:370
350699208,7cyclictest4100-21apache_processe08:33:331
3506992018,1cyclictest7208-21sshd12:25:461
3506992016,3cyclictest579-21cron09:34:201
3506992015,2cyclictest17428-21diskmemload12:07:481
350699201,17cyclictest11172-21kworker/1:112:12:581
3506992010,7cyclictest0-21swapper/110:56:521
3506992010,4cyclictest0-21swapper/109:49:481
3506992010,2cyclictest0-21swapper/111:29:311
695221910,0sleep10-21swapper/111:43:291
350699194,11cyclictest10626-21ntp_states08:48:381
350699193,15cyclictest24338-21ssh11:23:341
350699192,9cyclictest0-21swapper/108:08:411
3506991912,3cyclictest13401-21apache211:05:591
3506991910,0cyclictest0-21swapper/110:14:071
350699185,7cyclictest10050irq/110-ahci[0007:58:261
350699183,12cyclictest0-21swapper/110:48:361
350699182,9cyclictest0-21swapper/108:03:331
350699182,12cyclictest0-21swapper/107:23:371
3506991810,8cyclictest0-21swapper/112:32:151
3506991810,7cyclictest0-21swapper/111:11:301
3506991810,5cyclictest0-21swapper/109:59:351
3506991810,4cyclictest0-21swapper/108:53:421
3506991810,4cyclictest0-21swapper/107:53:341
3506991810,3cyclictest0-21swapper/111:33:221
3506991810,1cyclictest0-21swapper/110:20:361
350699180,8cyclictest29489-21ls08:13:371
350699180,11cyclictest0-21swapper/108:43:401
350699176,9cyclictest15151-21ls11:53:361
350699175,8cyclictest0-21swapper/107:18:321
350699171,11cyclictest0-21swapper/107:38:381
350699171,10cyclictest0-21swapper/108:58:401
3506991710,4cyclictest0-21swapper/110:08:331
3506991710,3cyclictest0-21swapper/108:28:391
350699164,8cyclictest0-21swapper/109:13:371
350699163,7cyclictest0-21swapper/107:28:331
3506991610,2cyclictest0-21swapper/109:28:321
3506991610,2cyclictest0-21swapper/108:18:311
3506991510,2cyclictest0-21swapper/107:08:321
350699142,8cyclictest0-21swapper/108:23:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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