The fs_mark program is meant to give a low level bashing to file
systems. The write pattern that we concentrate on is heavily
synchronous IO across mutiple directories, drives, etc.
OK jca@
a new libmysqlclient non-blocking API which utilizes co-routines. The X86
specific GCC ASM co-routine support hid the fact that there was an issue.
The only fallback code so far is POSIX user contexts which OpenBSD does not
support.
Input from and Ok sthen@ jasper@
This is a tool to run multiple simultaneous netperf/iperf/ping instances,
aggregate and plot the results. It is currently used as a main test tool by
the bufferbloat project investigating network performance under load with
active queue management mechanisms.
Several commands can be run in parallel and, provided they output
timestamped values, the test data points can be aligned with each other
in time, interpolating differences between the actual measurement points.
This makes it possible to graph (e.g.) ping times before, during and
after a link is loaded.
Aggregated data can be saved in a json format, output as csv values,
emacs org mode tables or, if py-matplotlib is installed, plots.
Each test can specify several different plots, including time-series
plots of the values against each other, as well as CDF plots of
(e.g.) ping times.
Tsung is a distributed load testing tool that is available free of
charge as an open source software product. It is protocol-independent
and can be used to stress Jabber/XMPP, HTTP, SOAP, LDAP and PostgreSQL
servers. The tool can simulate very large numbers of users per server,
making it ideal for analysing and testing the performance of large-scale
applications, such as instant messaging solutions.
ok sthen@
