Chris pointed me to the fact, that the window geoms calculation can be done once...

diff --git a/dwm.c b/dwm.c
index 48e0dd1..79a3a33 100644 (file)
--- a/dwm.c
+++ b/dwm.c
@@ -1724,12 +1724,13 @@ tile(void) {
                for(n = 0, c = nexttiled(clients, i); c; c = nexttiled(c->next, i))
                        n++;
 
+               /* window geoms */
+               mw = (n == 1) ? m->waw : m->mwfact * m->waw;
+               th = (n > 1) ? m->wah / (n - 1) : 0;
+               if(n > 1 && th < bh)
+                       th = m->wah;
+
                for(j = 0, c = mc = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
-                       /* window geoms */
-                       mw = (n == 1) ? m->waw : m->mwfact * m->waw;
-                       th = (n > 1) ? m->wah / (n - 1) : 0;
-                       if(n > 1 && th < bh)
-                               th = m->wah;
                        if(j == 0) { /* master */
                                nx = m->wax;
                                ny = m->way;