From e71f5a92911e7573d6e468cbc64c3655b7c75aef Mon Sep 17 00:00:00 2001 From: "psyc://psyced.org/~lynX" <@> Date: Sat, 14 May 2011 18:18:54 +0200 Subject: [PATCH] first suggestions for a benchmark --- bench/benchmark.wiki | 53 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 bench/benchmark.wiki diff --git a/bench/benchmark.wiki b/bench/benchmark.wiki new file mode 100644 index 0000000..c0a1228 --- /dev/null +++ b/bench/benchmark.wiki @@ -0,0 +1,53 @@ += libpsyc Performance Benchmarks = + +In this document we present the results of performance benchmarks +of libpsyc compared with libjson-glib and libxml2. + +== Procedure == + +We'll use typical messages from the XMPP ("stanzas" in Jabber +lingo) and compare them with equivalent PSYC packets and +JSON encodings. + +In some cases we will additionally compare PSYC packets to +a more efficient XML encoding based on PSYC methods, to have +a more accurate comparison of the actual PSYC and XML +syntaxes, rather than the protocol structures of PSYC and XMPP. + +== Caveats == + +In every case we'll compare performance of parsing and re-rendering +these messages, but consider also that the applicative processing +of an XML DOM tree is more complicated than just accessing +certain elements in a JSON data structure or PSYC variable +mapping. + +For a speed check in real world conditions which also consider the +complexity of processing incoming messages we should compare +the performance of a chat client using the two protocols, +for instance by using libpurple with XMPP and PSYC accounts. +To this purpose we first need to integrate libpsyc into libpurple. + +== The Benchmarks == + +=== A presence packet === + +Since presence packets are by far the dominant messaging content +in the XMPP network, we'll start with one of them. + +
+...
+
+ +and here's the same information in a JSON rendition: + +
+...
+
+ +=== An average chat message === +=== A social network activity === +=== A message with JSON-unfriendly characters === +=== A message with XML-unfriendly characters === +=== A packet containing a JPEG photograph === +