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2025-12-08 - 19:58
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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 Dec 08, 2025 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17595991462,35cyclictest21804-21ssh11:04:200
17595991462,35cyclictest21804-21ssh11:04:200
17445212910,84sleep017509-21sed07:08:210
17445212910,84sleep017509-21sed07:08:210
175959911937,76cyclictest0-21swapper/012:33:400
175959911829,79cyclictest7807-21ssh10:38:320
17601991123,73cyclictest12897-21apt-get10:48:321
17595991103,28cyclictest7949-21/usr/sbin/munin09:38:480
175959910950,53cyclictest24716-21diskmemload09:36:000
17595991082,43cyclictest16063-21apt-get09:53:310
175959910749,51cyclictest24344-21sh10:08:370
175959910749,51cyclictest24344-21sh10:08:370
17595991072,30cyclictest32442-21awk09:23:180
17595991072,30cyclictest32442-21awk09:23:180
17595991054,30cyclictest14479-21unixbench_multi11:48:550
17595991053,25cyclictest355-21runrttasks11:34:110
17595991052,94cyclictest25949-21kworker/u19:2+ext4-rsv-conversion10:48:470
17595991043,33cyclictest32704-21needreboot11:23:460
17595991043,33cyclictest32704-21needreboot11:23:460
17595991043,29cyclictest7199-21idleruntime08:13:410
17595991038,81cyclictest355-21runrttasks07:08:520
175959910340,55cyclictest0-21swapper/010:18:410
17595991028,83cyclictest10212-21apt-get11:43:410
175959910249,45cyclictest18640-21latency_hist10:58:210
175959910246,49cyclictest355-21runrttasks09:48:410
17595991023,31cyclictest26463-21latency_hist11:13:210
17595991023,21cyclictest11745-21/usr/sbin/munin08:28:440
17595991023,21cyclictest11745-21/usr/sbin/munin08:28:440
176149910150,8cyclictest181rcu_preempt11:59:352
175959910135,57cyclictest0-21swapper/010:13:470
17595991013,32cyclictest355-21runrttasks08:08:510
17595991003,30cyclictest26757-21/usr/sbin/munin11:13:340
17595991002,23cyclictest19436-21ps10:58:540
1759599994,31cyclictest25335-21grep12:08:540
17595999941,51cyclictest0-21swapper/009:58:410
17595999939,52cyclictest0-21swapper/009:03:400
1759599993,35cyclictest27451-21latency_hist09:13:200
1759599993,35cyclictest27451-21latency_hist09:13:200
1759599993,26cyclictest207-21systemd-journal10:48:180
1759599992,31cyclictest27076-21/usr/sbin/munin12:13:560
1759599992,31cyclictest27076-21/usr/sbin/munin12:13:560
1759599992,31cyclictest22279-21find12:03:540
1759599992,28cyclictest28587-21timerandwakeup09:13:570
1759599992,22cyclictest28067-21apt-get07:38:290
1759599982,34cyclictest18492-21/usr/sbin/munin08:48:570
1759599982,29cyclictest10681-21cpu09:43:350
1759599982,27cyclictest355-21runrttasks12:23:320
1759599982,24cyclictest32746-21seq09:23:320
1759599982,19cyclictest3691-21apt-get08:03:310
17595999752,40cyclictest0-21swapper/008:23:480
1759599973,24cyclictest5492-21kernelversion10:33:450
17595999723,66cyclictest19413-21diskstats11:59:350
1759599972,32cyclictest3327-21uname09:28:440
1759599972,30cyclictest21594-21/usr/sbin/munin07:18:460
1759599972,30cyclictest21594-21/usr/sbin/munin07:18:460
1759599972,28cyclictest415-21/usr/sbin/munin07:53:380
1759599964,30cyclictest21983-21fschecks_time08:58:420
1759599963,30cyclictest14777-21sshd08:38:170
1759599963,28cyclictest9928-21latency_hist08:23:200
1759599963,28cyclictest15036-21/usr/sbin/munin08:38:530
1759599963,18cyclictest32364-21fschecks_time10:23:420
1759599962,29cyclictest5606-21cron12:33:170
1759599962,29cyclictest5606-21cron12:33:170
1759599962,27cyclictest32513-21runrttasks07:52:040
1760199952,69cyclictest21553-21apt-get11:03:351
1760199952,69cyclictest21553-21apt-get11:03:351
1759599954,31cyclictest20620-21grep07:13:540
1759599954,28cyclictest26416-21/usr/sbin/munin07:33:460
1759599953,33cyclictest24809-21/usr/sbin/munin07:28:470
1759599953,29cyclictest2647-21fschecks_time10:28:420
171812957,15sleep20-21swapper/207:06:032
171812957,15sleep20-21swapper/207:06:032
1759599944,30cyclictest17133-21unixbench_multi11:53:580
1759599944,30cyclictest17133-21unixbench_multi11:53:580
17595999435,52cyclictest0-21swapper/010:03:570
1759599943,31cyclictest30910-21cat12:18:570
1759599943,29cyclictest30643-21unixbench_singl07:43:550
1759599943,29cyclictest16879-21/usr/sbin/munin08:43:310
1759599942,23cyclictest24684-21latency_hist07:28:200
1759599942,23cyclictest24684-21latency_hist07:28:200
17595999332,52cyclictest0-21swapper/011:43:210
1759599932,28cyclictest21050-21unixbench_singl08:53:550
17595999317,24cyclictest4951-21sh11:33:200
1759599923,27cyclictest2720-21mailstats07:58:520
1759599923,27cyclictest2720-21mailstats07:58:520
17595999211,24cyclictest30238-21/usr/sbin/munin11:18:530
17614999146,35cyclictest3605-21wc12:28:452
17614999146,35cyclictest3605-21wc12:28:452
17614999068,16cyclictest8848-21unixbench_multi11:38:562
17614999066,18cyclictest28348-21proc_pri09:13:542
1638629011,54sleep116390-21/usr/sbin/munin07:03:501
1638629011,54sleep116390-21/usr/sbin/munin07:03:501
17601998645,11cyclictest181rcu_preempt08:28:211
17601998564,15cyclictest21188-21apt-key11:03:211
17601998542,31cyclictest17584-21cyclictest07:08:391
1761499845,34cyclictest30331-21ssh09:18:302
1761499845,34cyclictest30331-21ssh09:18:302
17614998359,15cyclictest18682-21sh11:58:212
17614998359,15cyclictest18682-21sh11:58:212
17614998352,13cyclictest181rcu_preempt09:42:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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