---
title:  Performance Tuning and Configuration
---

<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License.  You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->

A collection of tools and controls allow you to monitor and adjust <%=vars.product_name_long%> performance.

-   **[Disabling TCP SYN Cookies](disabling_tcp_syn_cookies.html)**

    This is a must-do for Linux systems.

-   **[Improving Performance on vSphere](performance_on_vsphere.html)**

    This topic provides guidelines for tuning vSphere virtualized environments that host <%=vars.product_name_long%> deployments.

-   **[Performance Controls](performance_controls.html)**

    This topic provides tuning suggestions of particular interest to developers, primarily programming techniques and cache configuration.

-   **[System Member Performance](system_member_performance.html)**

    You can modify some configuration parameters to improve system member performance.

-   **[Slow Receivers with TCP/IP](slow_receivers.html)**

    You have several options for preventing situations that can cause slow receivers of data distributions. The slow receiver options control only peer-to-peer communication using TCP/IP. This discussion does not apply to client/server or multi-site communication, or to communication using the UDP unicast or multicast protocols.

-   **[Slow distributed-ack Messages](slow_messages.html)**

    In systems with distributed-ack regions, a sudden large number of distributed-no-ack operations can cause distributed-ack operations to take a long time to complete.

-   **[Socket Communication](socket_communication.html)**

    <%=vars.product_name%> processes communicate using TCP/IP and UDP unicast and multicast protocols. In all cases, communication uses sockets that you can tune to optimize performance.

-   **[UDP Communication](udp_communication.html)**

    You can make configuration adjustments to improve multicast and unicast UDP performance of peer-to-peer communication.

-   **[Multicast Communication](multicast_communication.html)**

    You can make configuration adjustments to improve the UDP multicast performance of peer-to-peer communication in your <%=vars.product_name%> system.

-   **[Maintaining Cache Consistency](cache_consistency.html)**

    Maintaining data consistency between caches in a distributed <%=vars.product_name%> system is vital for ensuring its functional integrity and preventing data loss.


