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June 18, 2015 17:24
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CloudWatch mappings of AWS EC2 Instance types to Java Heap sizes
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| { | |
| "AWSTemplateFormatVersion": "2010-09-09", | |
| "Description": "Use these mappings for cloudwatch templates which launch a java process. They define a heap size close to (but never over) 70% of the available RAM, at multiples of 64 megabytes. No heap is declared over 32GB for performance reasons.", | |
| "Mappings" : { | |
| "AWSInstanceType2JavaMaxHeap" : { | |
| "t1.micro" : { "Heap" : "384m" }, | |
| "t2.micro" : { "Heap" : "640m" }, | |
| "t2.small" : { "Heap" : "1280m" }, | |
| "t2.medium" : { "Heap" : "2816m" }, | |
| "t2.large" : { "Heap" : "5g" }, | |
| "m1.small" : { "Heap" : "1156m" }, | |
| "m1.medium" : { "Heap" : "2688m" }, | |
| "m1.large" : { "Heap" : "5376m" }, | |
| "m1.xlarge" : { "Heap" : "10.5g" }, | |
| "m2.xlarge" : { "Heap" : "11.75g" }, | |
| "m2.2xlarge" : { "Heap" : "23.75g" }, | |
| "m2.4xlarge" : { "Heap" : "32g" }, | |
| "m3.medium" : { "Heap" : "2688m" }, | |
| "m3.large" : { "Heap" : "5376m" }, | |
| "m3.xlarge" : { "Heap" : "10.5g" }, | |
| "m3.2xlarge" : { "Heap" : "22912m" }, | |
| "m4.large" : { "Heap" : "5g" }, | |
| "m4.xlarge" : { "Heap" : "10g" }, | |
| "m4.2xlarge" : { "Heap" : "20g" }, | |
| "m4.4xlarge" : { "Heap" : "32g" }, | |
| "m4.10xlarge" : { "Heap" : "32g" }, | |
| "c1.medium" : { "Heap" : "1156m" }, | |
| "c1.xlarge" : { "Heap" : "4992m" }, | |
| "c3.large" : { "Heap" : "2688m" }, | |
| "c3.xlarge" : { "Heap" : "5376m" }, | |
| "c3.2xlarge" : { "Heap" : "10.5g" }, | |
| "c3.4xlarge" : { "Heap" : "21g" }, | |
| "c3.8xlarge" : { "Heap" : "32g" }, | |
| "c4.large" : { "Heap" : "2688m" }, | |
| "c4.xlarge" : { "Heap" : "5376m" }, | |
| "c4.2xlarge" : { "Heap" : "10.5g" }, | |
| "c4.4xlarge" : { "Heap" : "21g" }, | |
| "c4.8xlarge" : { "Heap" : "32g" }, | |
| "g2.2xlarge" : { "Heap" : "10.5g" }, | |
| "r3.large" : { "Heap" : "10880m" }, | |
| "r3.xlarge" : { "Heap" : "21.25g" }, | |
| "r3.2xlarge" : { "Heap" : "32g" }, | |
| "r3.4xlarge" : { "Heap" : "32g" }, | |
| "r3.8xlarge" : { "Heap" : "32g" }, | |
| "i2.xlarge" : { "Heap" : "21.25g" }, | |
| "i2.2xlarge" : { "Heap" : "32g" }, | |
| "i2.4xlarge" : { "Heap" : "32g" }, | |
| "i2.8xlarge" : { "Heap" : "32g" }, | |
| "hi1.4xlarge" : { "Heap" : "32g" }, | |
| "hs1.8xlarge" : { "Heap" : "32g" }, | |
| "cr1.8xlarge" : { "Heap" : "32g" }, | |
| "cc2.8xlarge" : { "Heap" : "32g" } | |
| } | |
| } | |
| } |
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Where does the 70% target come from?