diff --git a/knotserver/xrpc/repo_compare.go b/knotserver/xrpc/repo_compare.go
index 3b03417f..f896fc75 100644
--- a/knotserver/xrpc/repo_compare.go
+++ b/knotserver/xrpc/repo_compare.go
@@ -2,15 +2,50 @@ package xrpc
 
 import (
 	"fmt"
+	"log/slog"
 	"net/http"
+	"runtime"
 
 	"github.com/bluekeyes/go-gitdiff/gitdiff"
+	"github.com/dustin/go-humanize"
 	"tangled.org/core/knotserver/git"
 	"tangled.org/core/types"
 	xrpcerr "tangled.org/core/xrpc/errors"
 )
 
 func (x *Xrpc) RepoCompare(w http.ResponseWriter, r *http.Request) {
+	var memBefore runtime.MemStats
+	runtime.ReadMemStats(&memBefore)
+	defer func() {
+		var memAfter runtime.MemStats
+		runtime.ReadMemStats(&memAfter)
+
+		x.Logger.Info("repo.compare memory",
+			slog.Group("request",
+				slog.String("repo", r.URL.Query().Get("repo")),
+				slog.String("rev1", r.URL.Query().Get("rev1")),
+				slog.String("rev2", r.URL.Query().Get("rev2")),
+			),
+			slog.Group("mem_before",
+				slog.String("heap_alloc", humanize.IBytes(memBefore.HeapAlloc)),
+				slog.String("heap_inuse", humanize.IBytes(memBefore.HeapInuse)),
+				slog.String("total_alloc", humanize.IBytes(memBefore.TotalAlloc)),
+				slog.String("sys", humanize.IBytes(memBefore.Sys)),
+			),
+			slog.Group("mem_after",
+				slog.String("heap_alloc", humanize.IBytes(memAfter.HeapAlloc)),
+				slog.String("heap_inuse", humanize.IBytes(memAfter.HeapInuse)),
+				slog.String("total_alloc", humanize.IBytes(memAfter.TotalAlloc)),
+				slog.String("sys", humanize.IBytes(memAfter.Sys)),
+			),
+			slog.Group("mem_delta",
+				slog.String("total_alloc", humanize.IBytes(memAfter.TotalAlloc-memBefore.TotalAlloc)),
+				slog.Uint64("mallocs", memAfter.Mallocs-memBefore.Mallocs),
+				slog.Uint64("num_gc", uint64(memAfter.NumGC-memBefore.NumGC)),
+			),
+		)
+	}()
+
 	repo := r.URL.Query().Get("repo")
 	repoPath, err := x.parseRepoParam(repo)
 	if err != nil {