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2026-03-24 - 19:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #6

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 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 100 highest latencies:
System rack8slot6s.osadl.org (updated Tue Mar 24, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21276993939,0cyclictest5263-21fwupd09:09:243
21266992019,1cyclictest65850irq/126-lan09:05:181
21266991918,1cyclictest65850irq/126-lan12:11:101
21266991818,0cyclictest65850irq/126-lan12:15:171
21266991817,1cyclictest65850irq/126-lan11:55:121
21266991817,1cyclictest65850irq/126-lan10:25:201
21266991817,1cyclictest65850irq/126-lan09:30:141
21266991817,1cyclictest65850irq/126-lan08:15:141
21266991717,0cyclictest65850irq/126-lan09:10:001
21266991717,0cyclictest65850irq/126-lan07:55:131
21266991716,1cyclictest65850irq/126-lan10:45:161
21266991716,1cyclictest65850irq/126-lan10:10:171
21266991716,1cyclictest65850irq/126-lan09:20:011
21266991716,1cyclictest65850irq/126-lan08:40:271
21266991716,1cyclictest65850irq/126-lan07:39:281
21266991716,1cyclictest65850irq/126-lan07:10:111
21266991616,0cyclictest65850irq/126-lan12:22:261
21266991616,0cyclictest65850irq/126-lan11:50:111
21266991616,0cyclictest65850irq/126-lan10:00:171
21266991616,0cyclictest65850irq/126-lan08:00:191
21266991615,1cyclictest65850irq/126-lan12:25:141
21266991615,1cyclictest65850irq/126-lan11:45:211
21266991615,1cyclictest65850irq/126-lan11:15:131
21266991615,1cyclictest65850irq/126-lan10:40:211
21266991615,1cyclictest65850irq/126-lan10:17:271
21266991615,1cyclictest65850irq/126-lan09:04:201
21266991615,1cyclictest65850irq/126-lan08:45:141
21266991615,1cyclictest65850irq/126-lan07:45:201
21266991515,0cyclictest65850irq/126-lan11:30:141
21266991515,0cyclictest65850irq/126-lan10:30:161
21266991515,0cyclictest65850irq/126-lan08:50:131
21266991514,1cyclictest65850irq/126-lan12:30:121
21266991514,1cyclictest65850irq/126-lan12:05:201
21266991514,1cyclictest65850irq/126-lan11:20:171
21266991514,1cyclictest65850irq/126-lan10:50:231
21266991514,1cyclictest65850irq/126-lan09:45:121
21266991514,1cyclictest65850irq/126-lan09:35:171
21266991514,1cyclictest65850irq/126-lan08:30:181
21266991514,1cyclictest65850irq/126-lan07:30:141
21266991414,0cyclictest65850irq/126-lan11:40:091
21266991414,0cyclictest65850irq/126-lan11:11:271
21266991414,0cyclictest65850irq/126-lan08:10:131
21266991413,1cyclictest65850irq/126-lan10:20:141
21266991413,1cyclictest65850irq/126-lan08:25:141
21266991413,1cyclictest65850irq/126-lan07:50:161
21266991413,1cyclictest65850irq/126-lan07:40:161
21266991413,1cyclictest65850irq/126-lan07:14:591
21266991313,0cyclictest65850irq/126-lan11:35:161
21266991313,0cyclictest65850irq/126-lan09:50:181
21266991312,1cyclictest65850irq/126-lan12:35:121
21266991312,1cyclictest65850irq/126-lan12:00:161
21266991312,1cyclictest65850irq/126-lan11:05:141
21266991312,1cyclictest65850irq/126-lan10:55:201
21266991312,1cyclictest65850irq/126-lan10:36:271
21266991312,1cyclictest65850irq/126-lan09:40:211
21266991312,1cyclictest65850irq/126-lan08:56:431
21266991211,1cyclictest65850irq/126-lan11:00:141
21266991211,1cyclictest65850irq/126-lan10:05:171
21266991211,1cyclictest65850irq/126-lan09:55:131
21266991211,1cyclictest65850irq/126-lan09:25:201
2127699118,3cyclictest743-21snmpd07:47:153
21266991111,0cyclictest65850irq/126-lan08:35:121
21266991110,1cyclictest65850irq/126-lan11:25:131
21266991110,1cyclictest65850irq/126-lan08:05:171
21266991110,1cyclictest65850irq/126-lan07:25:161
2125899117,2cyclictest717-21ntpd08:43:100
2127699108,2cyclictest743-21snmpd09:36:463
2127699108,2cyclictest741-21lldpd08:48:113
2127699107,3cyclictest743-21snmpd10:12:053
2127699107,3cyclictest743-21snmpd08:13:243
2127699106,4cyclictest743-21snmpd10:49:273
212769998,1cyclictest743-21snmpd11:22:503
212769996,3cyclictest743-21snmpd12:11:453
212769995,4cyclictest743-21snmpd12:15:493
212769995,4cyclictest743-21snmpd09:50:113
212769995,4cyclictest743-21snmpd09:21:193
212769995,4cyclictest19662-21cat12:20:153
212719998,1cyclictest743-21snmpd11:46:092
212719998,1cyclictest743-21snmpd10:34:562
212719998,1cyclictest741-21lldpd07:26:542
212669998,1cyclictest65850irq/126-lan07:25:001
212589998,1cyclictest743-21snmpd12:31:130
212589998,1cyclictest741-21lldpd12:00:220
212769987,1cyclictest743-21snmpd08:07:163
212769987,1cyclictest741-21lldpd11:28:303
212769987,1cyclictest18982-21cpuspeed_turbos11:00:113
212769986,2cyclictest743-21snmpd10:30:413
212769986,2cyclictest743-21snmpd08:26:133
212769985,3cyclictest743-21snmpd09:48:133
212769985,3cyclictest743-21snmpd08:54:153
212769985,3cyclictest743-21snmpd08:33:173
212769982,2cyclictest30192-21sshd10:07:283
212769982,2cyclictest26250-21awk11:15:213
212769982,2cyclictest2297-21unixbench-2d11:35:223
212769981,3cyclictest23783-21grep07:15:143
212769980,4cyclictest13232-21ntpq09:25:173
212769980,3cyclictest30962-21sendmail_mailqu07:30:193
212719988,0cyclictest743-21snmpd11:00:302
212719988,0cyclictest743-21snmpd07:17:322
212719988,0cyclictest741-21lldpd11:14:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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