On Monday, January 28, 2013 11:30:47 AM UTC-5, Dave Angel wrote: > On 01/28/2013 10:47 AM, Wanderer wrote: > > > I'm looking to make a WLAN tester for a manufacturing test. Something that > > could send and receive a bunch of files and measure how long it took. I > > would repeat this a number of times for a device under test and then use > > some metric to decide pass/fail and create a report. What libraries are > > available for Python for communicating with networks? My google searches > > have been disappointing. I'd prefer to do this in Windows but I'll consider > > Linux if that is the better option. > > > > > > Thanks > > > > > For what version of Python? > > > > Depending on what's at the far end of your connection, you may not need > > to do much at all. For example, if you have an ftp server, check out > > http://docs.python.org/2/library/ftplib.html > > > > in the standard library. > > > > > > > > Since you're doing performance testing, be aware that it's quite tricky > > to get meaningful results. For example, some connections have a > > satellite link in them, and thus have very long latency. A simple > > protocol will go very slowly in such a case, but most downloaders will > > open multiple sockets, and do many transfers in parallel. So you could > > either measure the slow way or the fast way, and both numbers are > > meaningful. > > > > Of course, it's more than a 2-way choice. Some protocols will compress > > the data, send it, and decompress it on the other end. Others (like the > > one rsync uses) will evaluate both ends, and decide which (if any) files > > need to be transferred at all. I believe it also does partial file > > updates if possible, but I'm not at all sure about that. > > > > Naturally, the throughput will vary greatly from moment to moment, and > > may be affected by lots of things you cannot see. > > > > -- > > DaveA
Yes. I noticed this variability. I've been using the Totusoft Lan_Speedtest.exe to test some modules. I've tested through the wifi to our intranet and saw variations I believe do to network traffic. I also tried peer to peer and the write time actual got worse. I don't know if it has do to with the firewall or the hard drive speed or just Windows giving this process low priority. I also saw drop outs. So figuring out the metric for pass/fail will be interesting. I'll check into setting an ftp for this test. Thanks -- http://mail.python.org/mailman/listinfo/python-list
