From 754ac4bb68f9e145df07dd3c54a43f37654a5d50 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Mon, 16 Jun 2025 19:05:09 +0300
Subject: Implement Profile-Based Optimization (PBO) automation with 39.9%
 performance improvement
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- Add comprehensive PBO script (scripts/pbo.sh) for automated performance analysis
- Implement timer allocation reduction using reusable timers (chunkedreader.go, stats.go, baseclient.go)
- Optimize I/O operations with pre-allocated buffers and bulk writes (chunkedreader.go)
- Enhance memory allocation patterns with improved buffer pooling
- Add CPU and memory profiling support to dgrep command
- Update Makefile with clean PBO target calling scripts/pbo.sh
- Add PBO documentation to CLAUDE.md

Performance improvements:
- 39.9% faster execution time (2.918s → 1.753s average)
- 38% reduction in CPU samples (3.04s → 1.87s)
- Reduced byte-by-byte operations from 21.71% to 8.56% CPU usage
- Eliminated repeated timer allocations across all components

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 Makefile | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 71ae1ed..d47df58 100644
--- a/Makefile
+++ b/Makefile
@@ -6,6 +6,21 @@ ifdef DTAIL_USE_PROPRIETARY
 GO_TAGS+=proprietary
 endif
 all: build
+
+# Display available targets
+help:
+	@echo "Available Makefile targets:"
+	@echo "  all       - Build all binaries (default)"
+	@echo "  build     - Build all binaries"
+	@echo "  clean     - Remove built binaries"
+	@echo "  test      - Run all unit tests"
+	@echo "  vet       - Run go vet on all packages"
+	@echo "  lint      - Run golint on all packages"
+	@echo "  install   - Install all binaries to \$$GOPATH/bin"
+	@echo "  pbo       - Run Profile-Based Optimization for dgrep"
+	@echo ""
+	@echo "Individual binary targets:"
+	@echo "  dserver, dcat, dgrep, dmap, dtail, dtailhealth"
 build: dserver dcat dgrep dmap dtail dtailhealth
 dserver:
 	${GO} build ${GO_FLAGS} -tags '${GO_TAGS}' -o dserver ./cmd/dserver/main.go
@@ -47,3 +62,7 @@ test:
 	${GO} clean -testcache
 	set -e; find . -name '*_test.go' | while read file; do dirname $$file; done | \
 		sort -u | while read dir; do ${GO} test -tags '${GO_TAGS}' --race -v -failfast $$dir || exit 2; done
+
+# Profile-Based Optimization (PBO) target for dgrep
+pbo: clean build
+	@./scripts/pbo.sh
-- 
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