List all events and suitable counters for events with ‘L2’ in them:.The following commands are useful to understand what PMCs and metrics can be accessed using Likwid on a given platform. PMCs can be collected using likwid-perfctr tool. To get more information about the caches, use likwid-topology with -c flag.NUMA topology: NUMA domains and memory sizes.Cache properties: Detailed information about all cache levels.Cache topology: How processors share the cache hierarchy.Thread topology: How processor IDs map on physical compute resources.likwid-topology reports on the following.Hardware topology can be viewed using likwid-topology tool. Using Likwid tool, we now explain the collection of PMCs on an Intel Haswell multicore and dual-socket CPU with specifications given as below: Can be used to collect and profile the PMCs for Nvidia GPUSĬollection of PMCs on Modern Intel-based Server Using Likwid Tool.Can be used for obtaining the PMCs for Nvidia GPUs.Also called perf_events can be used to gather the PMCs for CPUs in Linux.Used for reading PMCs of core and uncore components of an Intel.Developed in the University of Tennessee.Provides a standard API for accessing PMCs available on most modern microprocessors.Recently added support for extracting GPU counters as well.Provides command-line tools and an API to obtain PMCs for both Intel and AMD processors on the Linux OS.Likwid is an abbreviation for Like I know what I’m Doing.
PMCs on an Intel processor may not be available for an ARM processor or a GPU.
#PROCESS MONITOR FOR LINUX COMMAND SOFTWARE#
They include software events, which are pure kernel-level counters such as page faults, context switches, etc. Performance events or performance monitoring counters (PMCs) are special-purpose registers provided in modern microprocessors to store the counts of software and hardware activities. Furthermore, we explore the standard tools to collect utilization metrics for the execution of applications in Linux. In this post, I explain the standard tools to collect performance monitoring tools in modern computing platforms. Perseverance is stubbornness with a purpose – Josh Shipp There are a couple of examples on this site: tracking file accesses, tracking process execution.My dear reader, how are you? السلام عليكم It's relatively recent and there's not much literature on the topic search for auditctl or read the auditctl man page. To watch all the system calls under Linux, you can use the audit subsystem. kqueue under *BSD, and FAM (originally from SGI but now available as an API on many systems). Īgain, the facility is specific to Linux, but most other unices have a similar system, e.g. To watch what's happening to a particular file or in a particular directory or directory tree, use the inotify facility. Strace is specific to Linux, but other systems have a similar tool: truss on Solaris, ktrace or dtrace under *BSD, etc. Strace -s9999 -efile -p1234 # trace a running program with the given PID For example, if you're only interested in filesystem accesses: strace -s9999 -efile command_name # trace a program during its whole execution To watch what a particular process is doing, call strace on it. If you want more detailed information, it's not tracked by default. For example, there's iotop to watch disk I/O, atop for a bunch of system resources, powertop for power consumption. The grandaddy of all process monitors is top, and many system monitoring tools are called top.
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