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taler-exchange-benchmark(1)
###########################
.. only:: html
Name
====
**taler-exchange-benchmark** - measure exchange performance
Synopsis
========
**taler-exchange-benchmark**
[**-c** *CONFIG_FILENAME* | **––config=**\ \ *CONFIG_FILENAME*]
[**-F** | **––reserves-first**]
[**-f** | **––fakebank**]
[**-h** | **––help**]
[**-K** | **––linger**]
[**-L** *LOGLEVEL* | **––log-level=**\ \ *LOGLEVEL*]
[**-l** *FILENAME* | **––logfile=**\ \ *FILENAME*]
[**-m** *MODE* | **––mode=**\ \ *MODE*]
[**-n** *HOWMANY_COINS* | **––coins-number=**\ \ *HOWMANY_COINS*]
[**-p** *NPROCS* | **––parallelism=**\ \ *NPROCS*]
[**-R** *RATE* | **––refresh-rate=**\ \ *RATE*]
[**-r** *N* | **––reserves=**\ \ *N*]
[**-v** | **––version**]
Description
===========
**taler-exchange-benchmark** is a command-line tool to measure the time
spent to serve withdrawals/deposits/refreshes. It usually needs a
dedicate configuration file where all the services - the exchange and
the (fake)bank - listen to URLs not subject to any reverse proxy, as say
Nginx. Moreover, the benchmark runs on a “volatile” database, that means
that table are always erased during a single benchmark run.
**-c** *CONFIG_FILENAME* \| **––config=**\ \ *CONFIG_FILENAME*
(Mandatory) Use CONFIG_FILENAME.
**-F** \| **––reserves-first**
Create all reserves first, before starting normal operations.
**-f** \| **––fakebank**
Launch a fakebank instead of the Python bank. Only meaningful if the
mode is to launch more than just a client. Note that using the
fakebank will cause the benchmark application to reset all databases
as the fakebank is stateless and thus previous database state would
inherently cause trouble.
**-h** \| **––help**
Prints a compiled-in help text.
**-K** \| **––linger**
Linger around until keypress after the benchmark is done.
**-L** *LOGLEVEL* \| **––log-level=**\ \ *LOGLEVEL*
Specifies the log level to use. Accepted values are: ``DEBUG``, ``INFO``,
``WARNING``, ``ERROR``.
**-l** *FILENAME* \| **––logfile=**\ \ *FILENAME*
Send logging output to *FILENAME*.
**-m** *MODE* \| **––mode=**\ \ *MODE*
Mode of operation. Accepted values are: ``exchange``, ``clients``, ``both``.
**-n** *HOWMANY_COINS* \| **––coins-number=**\ \ *HOWMANY_COINS*
Defaults to 1. Specifies how many coins this benchmark should
withdraw and spend. After being spent, each coin will be refreshed
with a probability RATE (see option ``--refresh-rate``).
**-p** *NPROCS* \| **––parallelism=**\ \ *NPROCS*
Run with *NPROCS* client processes.
**-R** *RATE* \| **––refresh-rate=**\ \ *RATE*
Defaults to 10. Probability of refresh per coin (0-100).
**-r** *N* \| **––reserves=**\ \ *N*
Create *N* reserves per client.
**-v** \| **––version**
Print version information.
See Also
========
taler-exchange-dbinit(1), taler-exchange-offline(1), taler-merchant-benchmark(1),
taler-exchange-httpd(1), taler.conf(5)
Bugs
====
Report bugs by using https://bugs.taler.net/ or by sending electronic
mail to <taler@gnu.org>.
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