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nixos/sysctl: raise default vm.max_map_count to 1048576

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This commit is contained in:
Martino Fontana 2023-06-21 19:23:08 +02:00
parent 2c09e8eb87
commit e1a6c85c2b
4 changed files with 5 additions and 2 deletions
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1
nixos/modules/config/malloc.nix
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@ -97,7 +97,6 @@ in
};
config = mkIf (cfg.provider != "libc") {
boot.kernel.sysctl."vm.max_map_count" = mkIf (cfg.provider == "graphene-hardened") (mkDefault 1048576);
environment.etc."ld-nix.so.preload".text = ''
${providerLibPath}
'';

3
nixos/modules/config/sysctl.nix
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@ -72,5 +72,8 @@ in
# Disable YAMA by default to allow easy debugging.
boot.kernel.sysctl."kernel.yama.ptrace_scope" = mkDefault 0;
# Improve compatibility with applications that allocate
# a lot of memory, like modern games
boot.kernel.sysctl."vm.max_map_count" = mkDefault 1048576;
};
}

2
nixos/modules/virtualisation/lxd.nix
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@ -177,7 +177,7 @@ in {
"fs.inotify.max_queued_events" = 1048576;
"fs.inotify.max_user_instances" = 1048576;
"fs.inotify.max_user_watches" = 1048576;
"vm.max_map_count" = 262144;
"vm.max_map_count" = 262144; # TODO: Default vm.max_map_count has been increased system-wide
"kernel.dmesg_restrict" = 1;
"net.ipv4.neigh.default.gc_thresh3" = 8192;
"net.ipv6.neigh.default.gc_thresh3" = 8192;

1
pkgs/applications/networking/browsers/firefox/common.nix
View File

@ -357,6 +357,7 @@ buildStdenv.mkDerivation ({
export MOZILLA_OFFICIAL=1
'' + lib.optionalString stdenv.hostPlatform.isMusl ''
# linking firefox hits the vm.max_map_count kernel limit with the default musl allocator
# TODO: Default vm.max_map_count has been increased, retest without this
export LD_PRELOAD=${mimalloc}/lib/libmimalloc.so
'';