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2026-08-02 - 14:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 highest latencies:
System rack9slot4s (updated Sun Aug 02, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
560599125810,11cyclictest7475-21munin-run19:30:011
56049912031163,18cyclictest2695-21snmpd19:30:010
54032724621,31sleep10-21swapper/119:23:261
54832513417,29sleep00-21swapper/019:24:160
1857821020,9sleep0560499cyclictest21:20:300
213642940,9sleep0560499cyclictest21:30:120
11672820,9sleep0560499cyclictest22:00:300
5605996111,16cyclictest26446-21taskset21:43:551
5605996011,16cyclictest11575-21taskset19:37:041
560599598,14cyclictest194212chrt22:50:201
5605995911,16cyclictest17138-21cat00:10:171
5605995911,15cyclictest13346-21taskset19:40:501
5605995910,14cyclictest27178-21/usr/sbin/munin20:20:111
5605995818,12cyclictest25071-21iostat_ios23:05:211
5605995811,15cyclictest570-21taskset00:51:211
5605995811,15cyclictest19686-21hddtemp_smartct21:25:161
560599579,17cyclictest27810-21runrttasks23:12:271
560599579,16cyclictest8021-21sh23:45:271
5605995710,15cyclictest30716-21grep23:20:221
5605995710,15cyclictest30716-21grep23:20:211
560599569,17cyclictest32479-21runrttasks20:34:201
560599569,15cyclictest9901-21chrt19:34:141
560599569,15cyclictest28827-21find00:40:281
560599569,15cyclictest24701-21grep00:30:191
560599569,14cyclictest5655-21/usr/sbin/munin22:15:281
560599569,14cyclictest32019-21aten_r4power_cu23:25:101
560599568,19cyclictest14743-21runrttasks22:38:301
5605995616,10cyclictest12484-21ntpq21:05:231
5605995611,15cyclictest11433-21hddtemp_smartct23:55:191
5605995610,15cyclictest4606-21ntp_states22:10:251
5605995610,15cyclictest20057-21sh20:00:171
26002560,8sleep0560499cyclictest22:05:230
560599559,16cyclictest1908-21chrt20:39:221
560599559,14cyclictest1893-21grep23:30:181
5605995511,15cyclictest739-21awk22:00:241
5605995510,15cyclictest29185-21grep21:50:191
5605995510,14cyclictest8067-21cat20:55:121
560599549,14cyclictest25189-21/usr/sbin/munin20:15:271
560599548,16cyclictest9237-21runrttasks22:24:481
560599548,15cyclictest28516-21sh23:15:161
560599539,15cyclictest23039-21awk00:25:221
560599539,14cyclictest21725-21df_inode20:05:141
560599538,15cyclictest29623-21latency20:25:201
560599538,12cyclictest7359-21chrt20:51:111
5605995311,15cyclictest2472-21df20:40:171
5605995310,20cyclictest12818-21cron22:33:011
5605995310,15cyclictest2645-21sh22:05:251
5605995310,15cyclictest15889-21ntpq22:40:231
560599529,15cyclictest24332-21smartctl20:10:301
560599525,14cyclictest16535-21grep19:50:231
560599525,13cyclictest27764-21wc00:40:001
5605995211,11cyclictest23634-21memory21:35:241
5605995210,19cyclictest26719-21/usr/sbin/munin21:45:191
5605995210,19cyclictest12835-21/usr/sbin/munin00:00:201
560599519,14cyclictest30610-21ntpq00:45:221
560599519,14cyclictest10620-21ntpq21:00:251
560599518,15cyclictest17783-21ntpq22:45:251
560599488,14cyclictest15424-21/usr/sbin/munin21:15:131
5605994813,11cyclictest3286-21runrttasks00:17:091
5605994811,13cyclictest22597-21/usr/sbin/munin23:00:311
560599478,15cyclictest19182-21pidof19:57:591
560599477,20cyclictest3286-21runrttasks00:09:301
5605994713,15cyclictest3286-21runrttasks21:30:141
5605994712,16cyclictest20710-21aten_r4power_cu22:55:111
560599468,14cyclictest30469-21/usr/sbin/munin21:55:131
5605994610,15cyclictest3905-21hddtemp_smartct23:35:191
560599459,14cyclictest5380-21aten_r4power_po23:40:111
560599459,14cyclictest10021-21mailstats23:50:261
560599458,14cyclictest20361-21/usr/sbin/munin00:20:241
5605994514,11cyclictest14565-21smartctl21:10:291
5605994511,15cyclictest17874-21cat21:20:171
560599449,14cyclictest2695-21snmpd19:45:041
560599448,14cyclictest2695-21snmpd20:45:161
5605994413,12cyclictest0-21swapper/122:25:171
287942400,7sleep0560499cyclictest20:24:590
560499361,13cyclictest0-21swapper/000:40:090
560499352,17cyclictest26811-21ntp_states00:35:260
5604993517,7cyclictest24137-21unixbench_multi21:35:300
5604993414,7cyclictest7881-21python19:30:040
560499334,4cyclictest81rcu_preempt20:15:200
560499333,7cyclictest81rcu_preempt20:35:090
560499331,10cyclictest81rcu_preempt19:56:540
560499327,12cyclictest11121-21/usr/sbin/munin19:35:270
560499326,13cyclictest16354-21if_eth019:50:190
560499323,9cyclictest23609-21python23:00:270
560499321,4cyclictest81rcu_preempt20:47:120
560499321,4cyclictest81rcu_preempt00:02:340
560499321,13cyclictest0-21swapper/022:35:480
236262321,27sleep011565-21gdbus00:26:430
560499316,11cyclictest30606-21cpu21:55:130
560499312,4cyclictest81rcu_preempt19:45:210
560499311,4cyclictest81rcu_preempt21:17:100
5604993111,7cyclictest20245-21memory20:00:220
560499303,4cyclictest81rcu_preempt20:10:150
560499303,11cyclictest0-21swapper/021:50:230
560499302,4cyclictest81rcu_preempt23:25:090
560499302,4cyclictest81rcu_preempt21:46:480
560499302,24cyclictest690-21seq00:52:380
560499301,4cyclictest81rcu_preempt22:59:180
560499301,3cyclictest81rcu_preempt20:40:050
560499301,14cyclictest30835-21/usr/sbin/munin20:30:170
560499301,14cyclictest0-21swapper/021:03:520
560499300,4cyclictest81rcu_preempt23:14:290
560499300,3cyclictest81rcu_preempt23:47:220
560499296,6cyclictest6627-21kernelversion20:50:210
560499296,11cyclictest11564-21packagekitd19:43:090
5604992921,5cyclictest19436-21mailstats00:15:270
560499292,14cyclictest26551-21cron21:45:000
560499292,13cyclictest18302-21munin-run00:15:000
5604992919,6cyclictest5364-21basename23:40:120
560499291,5cyclictest81rcu_preempt23:55:180
560499291,4cyclictest81rcu_preempt22:53:410
560499291,4cyclictest81rcu_preempt22:40:060
560499291,4cyclictest81rcu_preempt20:55:120
560499291,13cyclictest11941-21cstates21:05:140
5604992910,6cyclictest10670-21unixbench_singl22:25:300
5604992910,4cyclictest20428-21/usr/sbin/munin00:20:110
51252291,5sleep00-21swapper/022:11:160
305852291,5sleep00-21swapper/020:29:100
560499289,6cyclictest22184-21grep20:05:220
560499289,5cyclictest9528-21fschecks_time23:50:160
560499281,24cyclictest0-21swapper/022:15:160
560499281,15cyclictest0-21swapper/022:20:180
50322281,5sleep00-21swapper/023:39:050
295892281,5sleep00-21swapper/023:16:280
28972281,5sleep00-21swapper/023:31:340
261342281,5sleep00-21swapper/023:09:310
184622281,5sleep00-21swapper/022:47:580
126592281,5sleep00-21swapper/022:31:200
560499272,13cyclictest0-21swapper/000:30:250
560499271,22cyclictest16229-21pidof00:08:000
313712271,5sleep00-21swapper/000:48:360
204782271,5sleep00-21swapper/021:25:340
149072271,5sleep00-21swapper/021:11:240
560499261,12cyclictest31850-21munin-run23:25:000
560499261,12cyclictest31850-21munin-run23:24:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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