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nixos/sysctl: raise default vm.max_map_count to 1048576
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@ -97,7 +97,6 @@ in
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};
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config = mkIf (cfg.provider != "libc") {
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boot.kernel.sysctl."vm.max_map_count" = mkIf (cfg.provider == "graphene-hardened") (mkDefault 1048576);
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environment.etc."ld-nix.so.preload".text = ''
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${providerLibPath}
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'';
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@ -72,5 +72,8 @@ in
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# Disable YAMA by default to allow easy debugging.
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boot.kernel.sysctl."kernel.yama.ptrace_scope" = mkDefault 0;
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# Improve compatibility with applications that allocate
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# a lot of memory, like modern games
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boot.kernel.sysctl."vm.max_map_count" = mkDefault 1048576;
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};
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}
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@ -177,7 +177,7 @@ in {
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"fs.inotify.max_queued_events" = 1048576;
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"fs.inotify.max_user_instances" = 1048576;
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"fs.inotify.max_user_watches" = 1048576;
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"vm.max_map_count" = 262144;
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"vm.max_map_count" = 262144; # TODO: Default vm.max_map_count has been increased system-wide
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"kernel.dmesg_restrict" = 1;
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"net.ipv4.neigh.default.gc_thresh3" = 8192;
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"net.ipv6.neigh.default.gc_thresh3" = 8192;
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@ -357,6 +357,7 @@ buildStdenv.mkDerivation ({
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export MOZILLA_OFFICIAL=1
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'' + lib.optionalString stdenv.hostPlatform.isMusl ''
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# linking firefox hits the vm.max_map_count kernel limit with the default musl allocator
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# TODO: Default vm.max_map_count has been increased, retest without this
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export LD_PRELOAD=${mimalloc}/lib/libmimalloc.so
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'';
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