c486edf897
We've been running the partial loader on googlesource.com for about 10 days now. Compared to the full loader, it is between 10x and 30x faster. Latency distribution of full reloads: - p50: 23s - p90: 57s - p95: 61s - p99.9 65s Latency distribution of partial reloads: - p50: 0.744s - p90: 2.8s - p95: 3.4s - p99.9 4.0s We have Gerrit instances with a large number of accounts (for example, one particular instance has 200.000 accounts). These are included in the fleet-wide metrics. The latency distribution for parallel reads does include loading a previously cached state from disk into memory, which is most likely a driver for the long tail. However, open-source installations would see this problem only upon startup of the Gerrit instance, so it's less of a concern. Generally, we can expect numbers on open-source instances to be even better if all Git data is on local disk (SSD). Change-Id: Ia92250c32482d94643cc9aae6264b16571e65c79
Gerrit Code Review
Gerrit is a code review and project management tool for Git based projects.
Objective
Gerrit makes reviews easier by showing changes in a side-by-side display, and allowing inline comments to be added by any reviewer.
Gerrit simplifies Git based project maintainership by permitting any authorized user to submit changes to the master Git repository, rather than requiring all approved changes to be merged in by hand by the project maintainer.
Documentation
For information about how to install and use Gerrit, refer to the documentation.
Source
Our canonical Git repository is located on googlesource.com. There is a mirror of the repository on Github.
Reporting bugs
Please report bugs on the issue tracker.
Contribute
Gerrit is the work of hundreds of contributors. We appreciate your help!
Please read the contribution guidelines.
Note that we do not accept Pull Requests via the Github mirror.
Getting in contact
The Developer Mailing list is repo-discuss on Google Groups.
License
Gerrit is provided under the Apache License 2.0.
Build
Install Bazel and run the following:
git clone --recurse-submodules https://gerrit.googlesource.com/gerrit
cd gerrit && bazel build release
Install binary packages (Deb/Rpm)
The instruction how to configure GerritForge/BinTray repositories is here
On Debian/Ubuntu run:
apt-get update & apt-get install gerrit=<version>-<release>
NOTE: release is a counter that starts with 1 and indicates the number of packages that have been released with the same version of the software.
On CentOS/RedHat run:
yum clean all && yum install gerrit-<version>[-<release>]
On Fedora run:
dnf clean all && dnf install gerrit-<version>[-<release>]
Use pre-built Gerrit images on Docker
Docker images of Gerrit are available on DockerHub
To run a CentOS 7 based Gerrit image:
docker run -p 8080:8080 gerritforge/gerrit-centos7[:version]
To run a Ubuntu 15.04 based Gerrit image:
docker run -p 8080:8080 gerritforge/gerrit-ubuntu15.04[:version]
NOTE: release is optional. Last released package of the version is installed if the release number is omitted.