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nixos/matrix-synapse: allow preloading jemalloc

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This is the default in the upstreams docker image and claims to reduce
memory fragmentation and usage.
This commit is contained in:
Martin Weinelt 2021-05-27 04:28:01 +02:00
parent 058b981b5b
commit 01f8f4f074
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1 changed files with 12 additions and 1 deletions
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13
nixos/modules/services/misc/matrix-synapse.nix
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@ -143,6 +143,13 @@ in {
List of additional Matrix plugins to make available. List of additional Matrix plugins to make available.
''; '';
}; };
withJemalloc = mkOption {
type = types.bool;
default = false;
description = ''
Whether to preload jemalloc to reduce memory fragmentation and overall usage.
'';
};
no_tls = mkOption { no_tls = mkOption {
type = types.bool; type = types.bool;
default = false; default = false;
@ -720,7 +727,11 @@ in {
--keys-directory ${cfg.dataDir} \ --keys-directory ${cfg.dataDir} \
--generate-keys --generate-keys
''; '';
environment.PYTHONPATH = makeSearchPathOutput "lib" cfg.package.python.sitePackages [ pluginsEnv ]; environment = {
PYTHONPATH = makeSearchPathOutput "lib" cfg.package.python.sitePackages [ pluginsEnv ];
} // optionalAttrs (cfg.withJemalloc) {
LD_PRELOAD = "${pkgs.jemalloc}/lib/libjemalloc.so";
};
serviceConfig = { serviceConfig = {
Type = "notify"; Type = "notify";
User = "matrix-synapse"; User = "matrix-synapse";