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TeamCity 2018.x Documentation

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  • CPU: TeamCity utilizes multiple cores of the CPU, so increasing number of cores makes sense. For non-trivial TeamCity usage at least 4 CPU cores are recommended.
  • Memory: used by the TeamCity server main process and child processes (used for Maven integration, version control integration, Kotlin DSL execution). See a note on the main process memory usage. Consider also that required memory may depend on the JVM used (32 bit or 64 bit). Generally, you will probably not need to dedicate more than 4G of memory to TeamCity server if you do not plan to run more then 100 concurrent builds (agents) and , support more then 200 online users or work with large repositories.
  • HDD/disk usage: This sums up mainly from the temp directory usage (<TeamCity Home>/temp and OS temp directory) and .BuildServer/system usage. Performance of the TeamCity server highly depends on the disk system performance. As TeamCity stores large amounts of data under .BuildServer/system (most notably, VCS caches and build results) it is important that the access to the disk is fast (in particular reading/writing files in multiple threads, listing files with attributes). Ensuring disk has good performance is especially important if you plan to store the data directory on a network drive.
  • Network: This mainly sums up from the traffic from VCS servers, to clients (web browsers, IDE, etc.) and to/from build agents (send sources, receive build results, logs and artifacts).

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  • number of build configurations;
  • number of builds in the history;
  • number of the builds running daily;
  • amount of data consumed and produced by the builds (size of the used sources and artifacts, size of the build log, number and output size of unit tests, number of inspections and duplicates hits, size and number of produced artifacts, etc.);
  • cleanup rules configured
  • number of agents and their utilization percentage;
  • number of users having TeamCity web pages open;
  • number of users logged in from IDE plugin;
  • number and type of VCS roots as well as the configured checking for changes interval for the VCS roots. VCS checkout mode is relevant too: server checkout mode generates greater server load. Specific types of VCS also affect server load, but they can be roughly estimated based on native VCS client performance;
  • number of changes detected by TeamCity per day in all the VCS roots;
  • the size of the repositories TeamCity works with;
  • total size of the sources checked out by TeamCity daily.

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  • 60 projects and 300 build configurations (with one forth being active and running regularly);
  • more than 300 builds a day;
  • about 2Mb log per build;
  • 50 build agents;
  • 50 web users and 30 IDE users;
  • 100 VCS roots (mainly Perforce and Subversion using server checkout), average checking for changes interval is 120 seconds;
  • more than 150 changes per day;
  • Kotlin DSL is not used;
  • the database (MySQL) is running on the same machine;
  • TeamCity server process has -Xmx1100m JVM setting.

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