Auf Storage liegt unter '''/github/easy_dtrace''' ein kleines Skript für Performance-Analysen mit DTrace
* Quelle: [http://github.com/plitc/easy_dtrace easy_dtrace]

== derzeitige Funktionen: ==

<source lang=bash>
storage# ./easy_dtrace.sh freenas
--- update FlameGraph // --->
Already up-to-date.
      
Choose the (dtrace) function:
1)  pmcstat -TS instructions (load hwpmc.ko!)  13) ***                                                                  |  #
2)  DTrace: Listing Probes                     14) ***                                                                  |  #
3)  DTrace: File Opens                         15) FlameGraph: DTrace stacks - capture 60 seconds                       |  #
4)  DTrace: Syscall Counts By Process          16) FlameGraph: pmcstat -G stacks - capture 60 seconds (load hwpmc.ko!)  |  #
5)  DTrace: Distribution of read() Bytes       |  #
6)  DTrace: Timing read() Syscall              |  #
7)  DTrace: Measuring CPU Time in read()       |  #
8)  DTrace: Count Process-Level Events         |  #
9)  DTrace: Profile On-CPU Kernel Stacks       |  #
10) DTrace: Scheduler Tracing                  |  #
11) DTrace: TCP Inbound Connections            |  #
12) DTrace: Raw Kernel Tracing                 |  #
</source>

== FlameGraph ==

'''15) FlameGraph: DTrace stacks - capture 60 seconds (svg output)'''

[[Datei:Storage.hq.c3d2.de_kernel.jpg]]

'''16) FlameGraph: pmcstat -G stacks - capture 60 seconds (load hwpmc.ko!) (svg output)'''

[[Datei:Storage.hq.c3d2.de_pmc.jpg]]