-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 03/20/12 10:14 AM, Shmuel Krakower wrote: > > The main issue I have with this is > that running the same requests as recorded is just cannot work. There is > almost no system that doesn't use cookies, sessions and other dynamic > content which just cannot simply be replayed. > > It might be that your sampler does this and if it is, it may work (I didn't > look into details). Can you share your use of it and how you overcome these > issues?
This is a good point, and if you're recording request traffic from live production, there are likely to be more relevant factors from the context than that, particularly the state of underlying databases. And you're right, the sampler plays back requests exactly as found in the logs, byte for byte right onto the socket. The way we've made this work in projects: - - restore the test database before the replay to the state of the production DB before the recording, with point-in-time recovery - - before the replay, pre-create sessions that were active before the recording or created during the recording, so that authentications during the replay hit a valid session This worked well for the tests in which we've used the sampler. But it does mean that preparations like this are also necessary, and these measures may not be possible or appropriate for everyone. Also, something like pre-creating sessions may cause misleading results, if session creation is a costly operation. An improvement that I have in mind for the sampler is to have it interact with other JMeter components the way that the HTTP Sampler does, especially with the Cookie Manager -- that would likely solve most of the issues with sessions. Any other relevant context that JMeter can't influence, such as databases, would still have to be re-created before a replay (I assume that's true of any tool for running replays -- you may need that for the Access Log Sampler as well, depending on the test). Best, Geoff - -- ** * * UPLEX - Nils Goroll Systemoptimierung Schwanenwik 24 22087 Hamburg Tel +49 40 2880 5731 Mob +49 176 636 90917 Fax +49 40 42949753 http://uplex.de -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (SunOS) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBCAAGBQJPaGM3AAoJEOUwvh9pJNURDy4P/1Aa4rSZF9uWtB8wwYBcy/0i n+jAeCDhIsQVz89NanJxA6Cg1GCiO7/3OJXdx+JIanbgelW4KNH8fbp+9PHxr8d6 2s9DwRHsvfo6+wUMxqmiR0j2ebIi3lypP2MWbyTTlFM6hjvBhctIdVeNtpIDAe+M YU04EOA2zUyLlc1rjs0ej6nNOx9695Fk7OTf6AGVUpTP3mWgwSDtx05MwZyaLIuJ f9WPGRqeItiAO/36PwxBwMKABTU7b5MKktaXfTzLkD6PNoyQQ6Hqc5sgQGFloroi xTb87VKb2vNEEDuHDdeFEo/0x+YZIVEWTePsT2Vl/uvkOwF2TqzT09RhIH0MEkmD PGXwjxU9sky/Ow5XkhDIpVh8J6auPXmCQNkZNuY2gNwHfWyE0UkVUjXF2xZUML41 3IvqBJaMxF7eTucSYT6gi2P8d2KxOYbs8oQuFujLUdthjLj6mUL/B1vdyNBCl/k/ 3l+ZnIv+bHD0Y2F+PuF0TPZ482q8SXRWsDt3rqUY+4Mn884VkYT3v/qSafHmndZk 3oaTqaF7GrHvAREI+7RnTr20AUeXgFW8hR60y1B/EHzOOAZ74OKcIefztoE90Oqy /ZDGlcDjhVvOAFo9I6Fv/0su024Yc+1SANqQlrS7UcBlIGlTPx4RL8L1YzGBcKNI H3g/35G17s6x7IJps55c =ZsmS -----END PGP SIGNATURE-----
