http://wiki.kolmisoft.com/index.php/How_fast_MOR_can_perform asterisk performance tests done by Kolmesoft (manufacturer of voiop soft switch based on asterisk). ~ 500-600 stimult. calls, in all cases seems to be limited by external factors (network, mysql on the same machine, etc). Error rate (% of dropped calls, call quality) was not recorded on those tests
http://wiki.kolmisoft.com/index.php/Asterisk_Background_performance_test performance tests for asterisk on 4 Intel Cores @ 2GHz, 2 GB RAM, over sip, recorded media playback – results: saturates 100mb network at ~1000 simultaneous calls, one way GSM playback.
http://dyn.com/open-dialogue/dynamic-discourse/dns/educational/how-we-got-dyndns-com-to-load-faster-and-how-you-can-learn-from-it the subj. how to optimize webpage load speed by compressing, optimizing images, js, css
http://wapo-spb.livejournal.com/3912.html asterisk stress testing (Livejournal post in russian )
http://lwn.net/Articles/418918/#Comments Interesting discussion on LWN about an article describes problem with packet loss on home broadband networks due to improper buffer sizes in various network gear (routers, cable/dsl modems, switches, etc) along the route path.
http://www.insight-it.ru/masshtabiruemost/arkhitektura-vkontakte/ [ENG] http://translate.google.com/translate?u=http%3A%2F%2Fwww.insight-it.ru%2Fmasshtabiruemost%2Farkhitektura-vkontakte%2F&sl;=ru&tl;=en&hl;=&ie;=UTF-8 some info about internals of vkontakte.ru - russian facebook clone, most popular social network in Russia, #34 in top100 websites according to alexa (btw, Flickr.com is #35).
http://www.bureausolomatina.ru/sites/default/files/SPICE%20Benchmark%20-%202010-11-16.pdf Benchmark comparing SPICE with RDP. In short, network utilization is similar, SPICE works for with video, but requires ~ 8Mbps of bandwidth. (SPICE work only for VMs)
http://www.imperialviolet.org/2010/06/25/overclocking-ssl.html Notes from google ppl about their optimizations for SSL connections.
http://www.redhat.com/pdf/rhel/bmsql-postgres-sqlsrvr-v1.0-1.pdf “This paper compares the performance of an Online Transaction Processing (OLTP) based
http://events.linuxfoundation.org/slides/2010/linuxcon2010_wheeler.pdf PDF slides that show what happens if you create a file system with one billion (10**9 ) files