Wednesday, January 22, 2014
On Wednesday, January 22, 2014 8:52:28 PM UTC+1, David Webster wrote:
-- Phusion Passenger version 3.0.18nginx version: nginx/1.2.4ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]rails (3.0.20)MULTIPLE TCP RESETS sentI usually see 20-25 database connections from my ruby/rails//passenger/nginx server to my database server. Pool is set to 25. Passenger is limited to 20I am seeing lots of TCP Resets and dropped mysql connections. I run the DB on port 3312...and using tcpdump I can see the db sends a [S.] SYN-ACK but the rails server responds with a [R] RESET immediately.tcptrack on port 3312 shows 20-25 connections then all of a sudden it jumps to 300-600 connections but the majority are RESET (s) Any idea why rails would be killing off so many DB connections (more then are even established)
Unless funny business is happening I wouldn't thought this mattered but there is very little point in setting the pool to 25 since each passenger instance only processes one request at a time. The default of 5 is usually ample. I wouldn't have thought this mattered though - the limit of 25 would normally never kick in in the first place.
Fred
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