realtime:documentation:howto:debugging:smi-latency:start
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realtime:documentation:howto:debugging:smi-latency:start [2018/08/21 12:56] ebugden Update link |
realtime:documentation:howto:debugging:smi-latency:start [2025/04/13 15:39] (current) costa.shul rdmsr |
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| Below are some tools for confirming and characterizing SMIs presented in a suggested order of use. Counting SMIs with Cyclictest is a good place to start because it is a good idea to first confirm that SMIs are happening on a system before investigating the possibility that they are causing latencies. | Below are some tools for confirming and characterizing SMIs presented in a suggested order of use. Counting SMIs with Cyclictest is a good place to start because it is a good idea to first confirm that SMIs are happening on a system before investigating the possibility that they are causing latencies. | ||
| + | * ''rdmsr -d 0x34'' | ||
| * [[realtime:documentation:howto:tools:cyclictest:options:smi-count|Cyclictest - SMI count]] (Intel x86 only) | * [[realtime:documentation:howto:tools:cyclictest:options:smi-count|Cyclictest - SMI count]] (Intel x86 only) | ||
| - | * [[realtime:documentation:howto:debugging:cyclictest-smi-ftrace|Cyclictest - SMI detection with function tracing]] | + | * [[realtime:documentation:howto:debugging:smi-latency:cyclictest-tracing|Cyclictest - SMI detection with function tracing]] |
| * [[realtime:documentation:howto:tools:hwlat|Ftrace - hwlat tracer]] | * [[realtime:documentation:howto:tools:hwlat|Ftrace - hwlat tracer]] | ||
| * [[realtime:documentation:howto:tools:perf-smi-cost|Perf stat - Cost of SMI handling]] (Intel x86 only) | * [[realtime:documentation:howto:tools:perf-smi-cost|Perf stat - Cost of SMI handling]] (Intel x86 only) | ||
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| </WRAP> | </WRAP> | ||
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| + | **Read also** | ||
| + | * [[realtime:documentation:howto:debugging:start|RT latency debugging]] | ||
| + | |||
realtime/documentation/howto/debugging/smi-latency/start.1534856174.txt.gz ยท Last modified: 2018/08/21 12:56 by ebugden
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