ACCUMULO-4752 Create documentation on improving performance

_docs-2-0/troubleshooting/peformance.md

@@ -0,0 +1,39 @@
+---
+title: Performance
+category: troubleshooting
+order: 5
+---
+
+Accumulo can be tuned to improve read and write performance.
+
+## Read performance
+
+1. Enable [caching] on tables to reduce reads to disk.
+
+1. Enable [bloom filters][bloom-filters] on tables to limit the number of disk lookups.
+
+1. Decrease the [major compaction ratio][compaction] of a table to decrease the number of
+   files per tablet. Less files reduces the latency of reads.
+
+## Write performance
+
+1. Enable [native maps][native-maps] on tablet servers to prevent Java garbage collection pauses
+   which can slow ingest.
+
+1. [Pre-split new tables][split] to distribute writes across multiple tablet servers.
+
+1. Ingest data using [multiple clients][multi-client] or [bulk ingest][bulk] to increase ingest throughput.
+
+1. Increase the [major compaction ratio][compaction] of a table to limit the number of major compactions
+   which improves ingest peformance.
+
+1. On large Accumulo clusters, use [multiple HDFS volumes][multivolume] to increase write peformance.
+
+[caching]: {{ page.docs_baseurl }}/administration/caching
+[bloom-filters]: {{ page.docs_baseurl }}/getting-started/table_configuration#bloom-filters
+[compaction]: {{ page.docs_baseurl }}/getting-started/table_configuration#compaction
+[native-maps]: {{ page.docs_baseurl }}/administration/in-depth-install#native-map
+[split]: {{ page.docs_baseurl }}//getting-started/table_configuration#pre-splitting-tables
+[multi-client]: {{ page.docs_baseurl }}/development/high_speed_ingest#multiple-ingest-clients
+[bulk]: {{ page.docs_baseurl }}/development/high_speed_ingest#bulk-ingest
+[multivolume]: {{ page.docs_baseurl }}/administration/multivolume