diff options
| -rw-r--r-- | changelog.d/8553.docker | 1 | ||||
| -rw-r--r-- | docker/Dockerfile | 1 | ||||
| -rw-r--r-- | docker/README.md | 5 | ||||
| -rwxr-xr-x | docker/start.py | 12 |
4 files changed, 17 insertions, 2 deletions
diff --git a/changelog.d/8553.docker b/changelog.d/8553.docker new file mode 100644 index 0000000000..f99c4207b8 --- /dev/null +++ b/changelog.d/8553.docker @@ -0,0 +1 @@ +Use jemalloc if available in docker. diff --git a/docker/Dockerfile b/docker/Dockerfile index d619ee08ed..def4501541 100644 --- a/docker/Dockerfile +++ b/docker/Dockerfile @@ -69,6 +69,7 @@ RUN apt-get update && apt-get install -y \ libpq5 \ libwebp6 \ xmlsec1 \ + libjemalloc2 \ && rm -rf /var/lib/apt/lists/* COPY --from=builder /install /usr/local diff --git a/docker/README.md b/docker/README.md index 7b138df4d3..3a7dc585e7 100644 --- a/docker/README.md +++ b/docker/README.md @@ -204,3 +204,8 @@ healthcheck: timeout: 10s retries: 3 ``` + +## Using jemalloc + +Jemalloc is embedded in the image and will be used instead of the default allocator. +You can read about jemalloc by reading the Synapse [README](../README.md) \ No newline at end of file diff --git a/docker/start.py b/docker/start.py index 0d2c590b88..16d6a8208a 100755 --- a/docker/start.py +++ b/docker/start.py @@ -3,6 +3,7 @@ import codecs import glob import os +import platform import subprocess import sys @@ -213,6 +214,13 @@ def main(args, environ): if "-m" not in args: args = ["-m", synapse_worker] + args + jemallocpath = "/usr/lib/%s-linux-gnu/libjemalloc.so.2" % (platform.machine(),) + + if os.path.isfile(jemallocpath): + environ["LD_PRELOAD"] = jemallocpath + else: + log("Could not find %s, will not use" % (jemallocpath,)) + # if there are no config files passed to synapse, try adding the default file if not any(p.startswith("--config-path") or p.startswith("-c") for p in args): config_dir = environ.get("SYNAPSE_CONFIG_DIR", "/data") @@ -248,9 +256,9 @@ running with 'migrate_config'. See the README for more details. args = ["python"] + args if ownership is not None: args = ["gosu", ownership] + args - os.execv("/usr/sbin/gosu", args) + os.execve("/usr/sbin/gosu", args, environ) else: - os.execv("/usr/local/bin/python", args) + os.execve("/usr/local/bin/python", args, environ) if __name__ == "__main__": |