It is also possible to use a raw event code if a preset doesn’t exist. The data structure perf_event_attr is how the event to count is configured. This data structure has numerous fields. In the example above, the data structure is setup so that instructions executed in the kernel (or...
It is also possible to use a raw event code if a preset doesn’t exist. The data structure perf_event_attr is how the event to count is configured. This data structure has numerous fields. In the example above, the data structure is setup so that instructions executed in the kernel (or...
to measure misses If type isPERF_TYPE_RAW, then a custom "raw"configvalue is needed. Most CPUs support events that are not covered by the "generalized" events. These are implementation defined; see your CPU manual (for example the Intel Volume 3B documentation or the AMD BIOS and Kernel D...
Example for sampling register values: register_sampling.cpp System Requirements Minimum Linux Kernel version: >= 5.4 Recommended Linux Kernel version: >= 5.13 (for older Kernel versions see below) Installed perf (check if perf stat ls provides any output, otherwise follow the instructions) Notes fo...
libperf is a library that wraps around the syscall perf_event_open(). This library exposes the kernel performance counters subsystem to userspace code. It can be used to efficiently trace portions of code with kernel support. - theonewolf/libperf
Ensure that the service accounts (for example, account running SSIS service) is added in server local group "Performance Monitor Users". The MSSQL service and Analysis service usually are added during installation, but this is not valid for SSIS service - need to add service account manual...
For example, to count "External bus cycles while bus lock signal asserted" events on Intel Core CPUs, pass in a 0x4064 event_id value and set hw_event.raw_type to 1. A counter of type PERF_TYPE_SOFTWARE will count one of the available software events, selected by 'event_id': /* ...
This event is very much similar to the MethodEnter event. Example of commands to enable/disable: { "functionality": "methodExitEvents", "command": "start", "delay": 1, "stackTrace...