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Vyacheslav Daradur edited comment on IGNITE-4719 at 4/21/17 2:03 PM: --------------------------------------------------------------------- [~dmagda] Does this task make sense? The main goal of this to describe suggestions which are output at Ignite startup: {code} [11:54:40] [11:54:41] Message queue limit is set to 0 which may lead to potential OOMEs when running cache operations in FULL_ASYNC or PRIMARY_SYNC modes due to message queues growth on sender and receiver sides. [11:54:41] Security status [authentication=off, tls/ssl=off] [11:54:43] Performance suggestions for grid (fix if possible) [11:54:43] To disable, set -DIGNITE_PERFORMANCE_SUGGESTIONS_DISABLED=true [11:54:43] ^-- JVM heap size is greater than 30.5Gb, JVM will not use compressed oops [11:54:43] ^-- Enable server mode for JVM (add '-server' to JVM options) [11:54:43] ^-- Enable G1 Garbage Collector (add '-XX:+UseG1GC' to JVM options) [11:54:43] ^-- Specify JVM heap max size (add '-Xmx<size>[g|G|m|M|k|K]' to JVM options)" [11:54:43] ^-- Specify New I/O max total size (add '-XX:MaxDirectMemorySize=<size>[g|G|m|M|k|K]' to JVM options) [11:54:43] ^-- Enable the thread-local allocation blocks (add '-XX:+UseTLAB' to JVM options) [11:54:43] ^-- Disable processing of calls to System.gc() (add '-XX:+DisableExplicitGC' to JVM options) [11:54:43] ^-- Speed up flushing of dirty pages by OS (alter vm.dirty_writeback_centisecs and vm.dirty_expire_centisecs parameters by setting to 500) [11:54:43] ^-- Reduce pages swapping ratio (set vm.swappiness=10) [11:54:43] ^-- Disable NUMA memory reclaim (set vm.zone_reclaim_mode=0) [11:54:43] ^-- Avoid direct reclaim and page allocation failures (set vm.extra_free_kbytes=1240000) [11:54:43] Refer to this page for more performance suggestions: https://apacheignite.readme.io/docs/jvm-and-system-tuning [11:54:43] [11:54:43] To start Console Management & Monitoring run ignitevisorcmd.{sh|bat} [11:54:43] [11:54:43] Ignite node started OK (id=8bf18ef1) [11:54:43] Topology snapshot [ver=1, servers=1, clients=0, CPUs=1, heap=1.0GB] {code} was (Author: daradurvs): [~dmagda] Does this task make sense? > Add documentation of current checks at Ignite-startup > ----------------------------------------------------- > > Key: IGNITE-4719 > URL: https://issues.apache.org/jira/browse/IGNITE-4719 > Project: Ignite > Issue Type: Task > Components: documentation > Reporter: Vyacheslav Daradur > Assignee: Vyacheslav Daradur > Priority: Minor > Attachments: suggestions.docx > > -- This message was sent by Atlassian JIRA (v6.3.15#6346)