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Date:         Thu, 6 Jan 2005 09:57:13 +0000
Reply-To:     "Z39.50 Next-Generation Initiative" <[log in to unmask]>
Sender:       "Z39.50 Next-Generation Initiative" <[log in to unmask]>
From:         Mike Taylor <[log in to unmask]>
Subject:      Re: Efficiency of SRW vs. SRU clients
Comments: To: [log in to unmask]
In-Reply-To:  <[log in to unmask]>
              ([log in to unmask])

> Date: Thu, 6 Jan 2005 00:47:39 -0000 > From: "Matthew J. Dovey" <[log in to unmask]> > > > > Average response time for the queries is 445ms. > > > [...] > > > I then tried making the SRW message by hand, similar to building the > > > SRU URL. [...] Average response time is 46ms. > > > > Woah! Dude! > > > > You're saying that the toolkit you were using to build your SRW XML > > packets was taking ten times as long as everything else you're doing > > _including network overhead_? Man, that is one deeply > > doo-dooey toolkit. > > This is probably Axis. Axis is not a particularly efficient engine, > not least of all since they got carried away with the class > injection pattern... I think that "not particularly efficient" is a rather charitable description here, rather along the lines of describing the Pacific Ocean as "not particularly dry". What, in the name of all that is holy, is it _doing_? Remember that the 46ms elapsed-time for the SRU version of the test includes time to _parse_ the returned XML, which tends to be _much_ more demanding than building a structure. I am truly staggered. I can't begin to imagine what uber-bogus code they must have in there that can lead to such astonishing wastefulness. I am reminded of the mythical bogo-sort -- http://catb.org/~esr/jargon/html/B/bogo-sort.html _/|_ _______________________________________________________________ /o ) \/ Mike Taylor <[log in to unmask]> http://www.miketaylor.org.uk )_v__/\ "We pay too high a price for Unity if it costs us the Truth" -- Arthur Wallis. -- Listen to free demos of soundtrack music for film, TV and radio http://www.pipedreaming.org.uk/soundtrack/


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