dan-palmer

# check swap usage
sysctl vm.swapusage

# disable encrypted swap - SNOW LEOPARD
sudo defaults write /Library/Preferences/com.apple.virtualMemory UseEncryptedSwap -boolean no

# disable encrypted swap - LION
sudo defaults write /Library/Preferences/com.apple.virtualMemory DisableEncryptedSwap -boolean yes

# disable swap

heathermiller

import scala.pickling._

import scala.reflect.runtime.universe._
import scala.util.parsing.json._
import scala.collection.mutable.{StringBuilder, Stack}

package object edn {
  implicit val pickleFormat: EdnPickleFormat = new EdnPickleFormat
}

mrflip

Tuning Storm+Trident

Tuning a dataflow system is easy:

The First Rule of Dataflow Tuning:
* Ensure each stage is always ready to accept records, and
* Deliver each processed record promptly to its destination

jprante

Elasticsearch configuration for high sustainable bulk feed

Test on single node, MacBook Pro, 16 GB RAM, 1TB SSD, OS X Maverick

ES 1.1.0 with Java 8, G1 GC, 12 GB heap

/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home/bin/java -Xms12g -Xmx12g -Djava.awt.headless=true -XX:+UseG1GC -Delasticsearch -Des.foreground=yes -Des.path.home=/Users/es/elasticsearch-1.1.0 -cp :/Users/es/elasticsearch-1.1.0/lib/elasticsearch-1.1.0.jar:/Users/es/elasticsearch-1.1.0/lib/:/Users/es/elasticsearch-1.1.0/lib/sigar/ org.elasticsearch.bootstrap.Elasticsearch

Node

jprante

ES 1.2.x settings

Name	Description
action.allow_id_generation	-
action.auto_create_index	-
action.bulk.compress	-
action.destructive_requires_name	http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/_parameters.html#_parameters
action.disable_shutdown	http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/cluster-nodes-shutdown.html#_disable_shutdown
action.get.realtime	http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/docs-get.html#realtime