diff --git a/common/placer1.cc b/common/placer1.cc
index 6683ddf7..96424957 100644
--- a/common/placer1.cc
+++ b/common/placer1.cc
@@ -609,9 +609,10 @@ class SAPlacer
         std::vector<std::pair<CellInfo *, BelId>> dest_bels;
         double delta = 0;
         moveChange.reset(this);
+#if 0
         if (ctx->debug)
             log_info("finding cells for chain swap %s\n", cell->name.c_str(ctx));
-
+#endif
         Loc baseLoc = ctx->getBelLocation(cell->bel);
         discover_chain(baseLoc, cell, cell_rel);
         Loc newBaseLoc = ctx->getBelLocation(newBase);
@@ -634,8 +635,10 @@ class SAPlacer
                 return false;
             dest_bels.emplace_back(std::make_pair(cr.first, targetBel));
         }
+#if 0
         if (ctx->debug)
             log_info("trying chain swap %s\n", cell->name.c_str(ctx));
+#endif
         // <cell, oldBel>
         for (const auto &db : dest_bels) {
             BelId oldBel = swap_cell_bels(db.first, db.second);
@@ -661,8 +664,10 @@ class SAPlacer
         // SA acceptance criterea
         if (delta < 0 || (temp > 1e-9 && (ctx->rng() / float(0x3fffffff)) <= std::exp(-delta / temp))) {
             n_accept++;
+#if 0
             if (ctx->debug)
                 log_info("accepted chain swap %s\n", cell->name.c_str(ctx));
+#endif
         } else {
             goto swap_fail;
         }
diff --git a/common/router2.cc b/common/router2.cc
index 7724f581..5f6d7f78 100644
--- a/common/router2.cc
+++ b/common/router2.cc
@@ -521,6 +521,9 @@ struct Router2
         int toexplore = 25000 * std::max(1, (ad.bb.x1 - ad.bb.x0) + (ad.bb.y1 - ad.bb.y0));
         int iter = 0;
         int explored = 1;
+        bool debug_arc = /*usr.cell->type.str(ctx).find("RAMB") != std::string::npos && (usr.port ==
+                            ctx->id("ADDRATIEHIGH0") || usr.port == ctx->id("ADDRARDADDRL0"))*/
+                false;
         while (!t.queue.empty() && (!is_bb || iter < toexplore)) {
             auto curr = t.queue.top();
             t.queue.pop();
@@ -546,8 +549,9 @@ struct Router2
 #endif
                 // Evaluate score of next wire
                 WireId next = ctx->getPipDstWire(dh);
-#if 0
-                ROUTE_LOG_DBG("   src wire %s\n", ctx->nameOfWire(next));
+#if 1
+                if (debug_arc)
+                    ROUTE_LOG_DBG("   src wire %s\n", ctx->nameOfWire(next));
 #endif
                 auto &nwd = wires.at(next);
                 if (nwd.unavailable)