nostrdb

commit 9f4cc23022fee889a1c07e5c17b548376dcf5c82
parent e3cc896e25f68778401e5a87cb251290da2b062d
Author: William Casarin <jb55@jb55.com>
Date:   Mon,  8 Jan 2024 12:09:20 -0800

perf: add some flamegraph helpers to makefile

Diffstat:
M
.gitignore
 | 
6
++++++
M
Makefile
 | 
14
+++++++++++++-
M
shell.nix
 | 
2
+-

3 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -10,6 +10,12 @@ test
 *.zst
 *.o
 libnostrdb.a
+perf.data
+perf.folded
+perf.data.old
+perf.out
+ndb.svg
+flamegraph.html
 testdata/many-events.json
 testdata/db/ndb-v0.tar
 testdata/db/v0
diff --git a/Makefile b/Makefile
@@ -159,6 +159,18 @@ testdata/many-events.json: testdata/many-events.json.zst
 bench: bench-ingest-many.c $(DEPS) 
 	$(CC) $(CFLAGS) $< $(LDS) -o $@
 
+perf.out: fake
+	perf script > $@
+
+perf.folded: perf.out
+	stackcollapse-perf.pl $< > $@
+
+ndb.svg: perf.folded
+	flamegraph.pl $< > $@
+
+flamegraph: ndb.svg
+	browser $<
+
 run-bench: testdata/many-events.json bench
 	./bench
 
@@ -169,4 +181,4 @@ testdata/db/.dir:
 test: test.c $(DEPS) testdata/db/.dir
 	$(CC) $(CFLAGS) test.c $(LDS) -o $@
 
-.PHONY: tags clean
+.PHONY: tags clean fake
diff --git a/shell.nix b/shell.nix
@@ -1,7 +1,7 @@
 { pkgs ? import <nixpkgs> {} }:
 with pkgs;
 mkShell {
-  buildInputs = [ autoreconfHook flatbuffers flatcc pkg-config ];
+  buildInputs = [ autoreconfHook flatbuffers flatcc pkg-config flamegraph ];
 
   LIBCLANG_PATH="${llvmPackages.libclang}/lib";
 }