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On Sat, 09 Sep 2006 13:27:39 +0530, quasi quasilists@gmail.com wrote:
www.cleartrip.com right now runs on CMUCL+TBNL+apache+mod_lisp2. We have load tested it for up to 1000 concurrent users. It did not break or leak. The performance was purely a factor of the computational complexity of the page being displayed. For the front page, which uses HTML_TEMPLATE, apache serving SSI was only slightly faster. Excellent performance generally
Good... :)
Unfortunately I could not manage to get SBCL to perform anywhere near what CMUCL could. My shortcomings, mostly, I guess.
You might see the difference between "green" threads (CMUCL) and OS threads (SBCL). My guess is that thread creation and/or thread switching is more expensive on SBCL. Maybe your tests amplify this difference? Have you tried with other Lisps which use native threads?