Paweł Dziepak dcd79af8ed lsa: optimise disabling reclamation and invalidation counter
Most of the lsa gory details are hidden in utils/logalloc.cc. That
includes the actual implementation of a lsa region: region_impl.

However, there is code in the hot path that often accesses the
_reclaiming_enabled member as well as its base class
allocation_strategy.

In order to optimise those accesses another class is introduced:
basic_region_impl that inherits from allocation_strategy and is a base
of region_impl. It is defined in utils/logalloc.hh so that it is
publicly visible and its member functions are inlineable from anywhere
in the code. This class is supposed to be as small as possible, but
contain all members and functions that are accessed from the fast path
and should be inlined.
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Scylla

Quick-start

$ git submodule update --init --recursive
$ sudo ./install-dependencies.sh
$ ./configure.py --mode=release
$ ninja-build -j4 # Assuming 4 system threads.
$ ./build/release/scylla
$ # Rejoice!

Please see HACKING.md for detailed information on building and developing Scylla.

Running Scylla

  • Run Scylla
./build/release/scylla

  • run Scylla with one CPU and ./tmp as data directory
./build/release/scylla --datadir tmp --commitlog-directory tmp --smp 1
  • For more run options:
./build/release/scylla --help

Building Fedora RPM

As a pre-requisite, you need to install Mock on your machine:

# Install mock:
sudo yum install mock

# Add user to the "mock" group:
usermod -a -G mock $USER && newgrp mock

Then, to build an RPM, run:

./dist/redhat/build_rpm.sh

The built RPM is stored in /var/lib/mock/<configuration>/result directory. For example, on Fedora 21 mock reports the following:

INFO: Done(scylla-server-0.00-1.fc21.src.rpm) Config(default) 20 minutes 7 seconds
INFO: Results and/or logs in: /var/lib/mock/fedora-21-x86_64/result

Building Fedora-based Docker image

Build a Docker image with:

cd dist/docker
docker build -t <image-name> .

Run the image with:

docker run -p $(hostname -i):9042:9042 -i -t <image name>

Contributing to Scylla

Guidelines for contributing

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