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Links for 2008-11-16 [del.icio.us]

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dion

Posts: 5028
Nickname: dion
Registered: Feb, 2003

Dion Almaer is the Editor-in-Chief for TheServerSide.com, and is an enterprise Java evangelist

Links for 2008-11-16 [del.icio.us]

Posted: Nov 16, 2008 11:18 PM

This post originated from an RSS feed registered with Java Buzz by dion.
Original Post: Links for 2008-11-16 [del.icio.us] Feed Title: techno.blog(Dion) Feed URL: http://feeds.feedburner.com/dion Feed Description: blogging about life the universe and everything tech	Latest Java Buzz Posts Latest Java Buzz Posts by dion Latest Posts From techno.blog(Dion)

Passenger - Too-biased
At the same time Passenger introduced some tangible improvements. We switched to enterprise ruby to get the full benefit of the COW memory characteristics and we can absolutely confirm the memory savings of 30% some others have reported. This is many thousand dollars of savings even at today’s hardware prices. We allow Passenger to adaptively spawn more processes with demand but most of the time our application servers are running about 40 processes to handle more than a million dynamic requests a day. However, because passenger constantly despawns & respawns rails processes they always stay fresh, run short GC cycles and are generally a lot more responsive. This means that the total amount of memory that is used by Shopify during normal operations went from average of 9GB to an average of 5GB. We evenly distributed the savings amongst more Shopify processes and more memcached space which moved our average response time from 210ms to 130ms while traffic grew 30% in the last few months.

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