See my posts about it: DTrace for Linux 2016 (eBPF) and DTrace for Linux 2018 (bpftrace). The new Linux tracer, which builds upon all of these, is enhanced BPF with multiple front-ends available: in particular, bcc and bpftrace. The prior Linux tracers were ftrace and perf_events. This is the culmination of many tracing projects and technologies that were merged in the Linux kernel over the years, including: profiling and PMC events (perf_events), kernel static tracing (tracepoints), kernel dynamic tracing (kprobes), and user dynamic tracing (uprobes). LinuxĪs of Linux 4.9, the Linux kernel finally has similar raw capabilities as DTrace. Some will work on other operating systems with out changes, some will require minor tweaks to get running. Many of the DTrace scripts on this page were originally written for Solaris 10. Those new scripts can be found on the website.ĭTrace is available for Mac OS X, FreeBSD, and the Solaris family of operating systems: Solaris 10, Oracle Solaris 11, SmartOS, OmniOS, and anything else based on the illumos kernel. My most recent collection was published in the DTrace book (Prentice Hall, 2011) pictured on the right, which contains many new scripts. These were developed into a collection called the DTraceToolkit, which contains newer versions of the scripts found here. This website contains many of my first DTrace scripts, written during 2004-5 on pre-release Solaris 10. For a longer summary, see the wikipedia DTrace entry. It provides a language to write DTrace scripts that is similar to C and awk and is event based. DTrace helps troubleshoot problems on servers by providing new detailed views of application and system internals, to a level that was previously difficult or impossible to access. The following are open source tools and examples that use DTrace, an implementation of dynamic tracing that is available in different OSes (Solaris, Mac OS X, FreeBSD. Systems Performance: Enterprise and the Cloud, 2nd Edition How To Add eBPF Observability To Your ProductīPF binaries: BTF, CO-RE, and the future of BPF perf tools (the simulation time series will always be plotted).USENIX LISA2021 Computing Performance: On the Horizon If you only want some of the timeseries objects, set ts_list to be those If you want S, I, and R on a single plot, set ts_plots equal to If you only want to plot the graph, set ts_plots equal to. Network_ax, ts_ax_list (axis, list of axises) The axes for the network plot and a list of all the axes for the **nx_kwargs any networkx keyword arguments to go into the network plot. If given, then the other nodes will be left invisible when plottingīut I think this requires networkx v2.3 or later. Use set_pos if you want to do this) statuses_to_plot list of statuses to plot. timelabel (string, default '$t$') the horizontal label to be used on the time series plots pos overrides self.pos for this display (but does not overwrite List and will not have priority by status. If listĪny statuses not appearing in list will simply be below those on the status_order list of statuses default False Each status will appear on top of all later statuses. This also determines which nodes are on top of each other nodelist (list, default None) which nodes should be included in the network plot. While, ] or will result inĢ plots, one with both 'S' and 'I' and one with just 'R'.ĭefaults to the possible_statuses ts_list (list of timeseries objects - default None) If multiple time series have been added, we might want to plot So, , ] or will result inģ plots, one with just 'S', one with just 'I' and one with just 'R' IfĮntry i is then plot i has both 'A' and 'B' plotted. Length of the list determines how many plots there are. Lists such as, , ] or, ]Įquivalently and will do the sameīut is problematic if a status has a string longer than 1.ĭenotes what should appear in the timeseries plots. If or False then the display only shows the network.
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