run multiple benchmarks at once

flake.nix

@@ -13,6 +13,17 @@
     params = builtins.fromJSON (builtins.readFile ./membench_params.json);
     rtsMemSize = null;
     rtsflags = params.rtsFlags;
+    limit2 = "4096M";
+    variantTable = {
+      baseline = "";
+      justc = "-c";
+      four  = "-H4G -M${limit2}";
+      five  = "-H4G -M${limit2} -c50";
+      six   = "-H4G -M${limit2} -c70";
+      seven = "-H4G -M${limit2} -G3";
+      eight = "-H4G -M${limit2} -G3 -c50";
+      nine  = "-H4G -M${limit2} -G3 -c70";
+    };
     overlay = self: super: {
       inherit mainnet-chain;
       nodesrc = cardano-node2;
@@ -21,13 +32,14 @@
       db-analyser = cardano-node2.packages.x86_64-linux.db-analyser;
       snapshot = self.callPackage ./snapshot-generation.nix {};
       membench = self.callPackage ./membench.nix { inherit rtsflags rtsMemSize; };
+      membenches = self.callPackage ./membenches.nix { inherit variantTable; };
       cardano-node = cardano-node.packages.x86_64-linux.cardano-node;
     };
   in {
     packages.x86_64-linux = let
       pkgs = import nixpkgs { system = "x86_64-linux"; overlays = [ overlay ]; };
     in {
-      inherit (pkgs) snapshot db-analyser membench;
+      inherit (pkgs) snapshot db-analyser membench membenches;
     };
   };
 }

membench.nix

@@ -48,7 +48,7 @@ let
       | .defaultScribes = .defaultScribes + [ [ "FileSK", "log.json" ] ]
       ' ${nodesrc}/configuration/cardano/mainnet-config.json > config.json
     cp -v ${nodesrc}/configuration/cardano/*-genesis.json .
-    command time -f %M -o $out/highwater cardano-node +RTS ${flags} -RTS run --database-path chain/ --config config.json --topology ${topologyPath} --shutdown-on-slot-synced 2000
+    command time -f %M -o $out/highwater cardano-node +RTS -s$out/rts.dump ${flags} -RTS run --database-path chain/ --config config.json --topology ${topologyPath} --shutdown-on-slot-synced 2000
     #sleep 600
     #kill -int $!
     pwd

membench_params.json

@@ -1,5 +1,5 @@
 {
-  "snapshotSlot":38037613,
+  "snapshotSlot":37173650,
   "finalImmFile":1800,
-  "rtsFlags":"-c"
+  "rtsFlags":""
 }

membenches.nix

@@ -0,0 +1,10 @@
+{ membench, variantTable, lib, runCommand }:
+
+let
+  variants = lib.mapAttrs (k: v: membench.override { rtsflags = v; }) variantTable;
+  symlinks = builtins.attrValues (lib.mapAttrs (k: v: "ln -sv ${v} $out/${k}") variants);
+in
+  runCommand "membenches" {} ''
+    mkdir $out
+    ${lib.concatStringsSep "\n" symlinks}
+  ''