[announce] NYC*BUG Wednesday February 4: Postfix; DCBSDCon

[NYC*BUG Announcements]

February 04, 2009, Wednesday

Postfix Performance Tuning

6:45 pm, Suspenders Restaurant
http://www.suspendersbar.com/location.php
Please note later time!


Money can buy you bandwidth, but latency is forever!

John Mashey, MIPS

Victor will cover an array of issues connected to Postfix performance 
tuning, including:
# Latency, concurrency and throughput
# Postfix input processing
# Queue file format rationale
# Input processing bottlenecks
# Pre-queue filters, milters, content filters
# Tuning for fast (enough) input
# Postfix on-disk queues, requirements and architecture
# What is a "transport"?
# Postfix "nqmgr" scheduler algorithm
# Per-destination in memory queues
# Per-destination scheduler controls
# SMTP delivery
# Understanding delay logging
# Transport process limits, concurrency limits
# Scaling to thousands of output processes
# Connection caching, TLS session caching, feedback controls

Speaker Bio

Victor Duchovni trained in mathematics, switched tracks to CS in 1980s 
leaving Princeton with a master`s degree in mathematics and newly 
acquired skills in Unix system administration and system programming. In 
1990 moved to Lehman Brothers, worked on system management tooling, and 
network engineering. Ported "Moira" from MIT to Lehman, built efficient 
build systems that predated (and partly inspired) Jumpstart. In 1994 
joined ESM to market "CMDB" tools to enterprise users, but this did not 
pan out, in the mean time learned Tcl, and contributed bunch of patches 
to the 7.x early 8.x TCL releases. In 1997 returned to New York, working 
in IT Security at Morgan Stanley since late 1999. At Morgan Stanley, 
developed a hobby in perimeter email security, becoming an active 
Postfix user and very soon contributor in May of 2001. In addition to 
many smaller feature improvements, contributed initial implementation of 
SMTP connection caching, overhauled and currently maintain LDAP and TLS 
support. Made significant design contributions to queue manager in 
collaboration with Wietse and Patrik Raq. In 2.6 contributing support 
for TLS EC ciphers and multi-instance management tooling, ideally also 
TLS SNI if time permits.

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DCBSDCon begins the morning of February 5th at 10 am at the Marriott 
Wardman in Washington DC.

Anyone who needs to work out transportation or hotel should hit the talk 
list to coordinate.