diff --git a/extra/viz/README.md b/extra/viz/README.md
index 25f327f5c1..d6460fd8b6 100644
--- a/extra/viz/README.md
+++ b/extra/viz/README.md
@@ -13,8 +13,13 @@ Flags: VIZ=-1 to only save the trace to a file, VIZ=1 also launches a web server
 
 Use `extra/viz/cli.py --profile` to list all sources.
 
-List top slowest kernels on a source: `--profile -s "AMD"`
-List samples of a kernel on a source: `--profile -s "AMD" -i E_3 | head 4`
+```bash
+# View top 40 slowest kernels and their AST (DEBUG=4 to see source code)
+DEBUG=3 extra/viz/cli.py --profile -s AMD --top 40
+
+# View all runs of a kernel
+extra/viz/cli.py --profile -s AMD -i E_3 | head 4`
+```
 
 ## Inspect codegen and PatternMatcher
 
diff --git a/extra/viz/cli.py b/extra/viz/cli.py
index 9b3e6b0a45..16838eedaf 100755
--- a/extra/viz/cli.py
+++ b/extra/viz/cli.py
@@ -6,6 +6,7 @@ from typing import Iterator
 from tinygrad.viz import serve as viz
 from tinygrad.uop.ops import RewriteTrace
 from tinygrad.helpers import temp, ansistrip, colored, time_to_str, ansilen, ProfilePointEvent, ProfileRangeEvent, TracingKey, unwrap, NO_COLOR
+from tinygrad.helpers import DEBUG
 
 # profile decoder used in CLI and tests
 def decode_profile(data:bytes) -> dict:
@@ -64,8 +65,8 @@ def main(args) -> None:
     profile["layout"].update([(f'{c["name"][5:]}{" SQTT" if s["name"].endswith("PKTS") else ""} {s["name"]}', s["data"]) for c in viz_data.ctxs
                               if c["name"].startswith("SQTT") for s in c["steps"] if s["name"].endswith(("PMC", "PKTS"))])
     if args.src is None:
-      for k in profile["layout"]:
-        print(f"  {format_colored(k)}")
+      print("Select a source with -s")
+      for k in profile["layout"]: print(f"  {format_colored(k)}")
       return None
 
     # ** SQTT printer
@@ -111,8 +112,10 @@ def main(args) -> None:
         elif args.item == r[0]:
           rows = r[2]["rows"] if len(r) > 2 else [r[:2]]
           cols = r[2]["cols"] if len(r) > 2 else cols
-      from tabulate import tabulate
-      print(tabulate(rows, headers=cols, tablefmt="github"))
+      data = [[x for x in cols], *[[str(x) for x in r] for r in rows]]
+      widths = [max(len(r[i]) for r in data) for i in range(len(cols))]
+      def fmt(r): return "| "+" | ".join(x+" "*(w-len(x)) for x,w in zip(r, widths))+" |"
+      print(fmt(data[0])+"\n"+fmt(["-"*w for w in widths])+"\n"+("\n".join([fmt(row) for row in data[1:]])))
       return None
 
     # ** Memory printer
@@ -127,8 +130,11 @@ def main(args) -> None:
       return None
 
     # ** Profiler printer
-    agg:dict[str, tuple[float, int]] = {}
-    total = 0
+    agg:dict[str, tuple[float, int, int|None]] = {}
+    total, first = 0, True
+    def print_kernel(ref:int) -> None:
+      if DEBUG >= 3: print(viz._reconstruct(viz_data, viz_data.trace.rewrites[ref][0].sink).pyrender())
+      if DEBUG >= 4: print(viz_data.ctxs[ref]["prg"].src[3].arg)
     for e in data.get("events", []):
       et = e["dur"] * 1e-6
       if args.item is not None:
@@ -136,20 +142,23 @@ def main(args) -> None:
           ptm = colored(time_to_str(et, w=9), "yellow" if et > 0.01 else None)
           name = e["name"] + (" " * (46 - ansilen(e["name"])))
           print(f"{format_colored(name)} {ptm}/{et*1e3:9.2f}ms  " + e.get("fmt", "").replace("\n", " | ") + "  ")
+          if first:
+            if e["ref"] is not None: print_kernel(e["ref"])
+            first = False
       else:
-        t, c = agg.get(e["name"], (0.0, 0))
-        agg[e["name"]] = (t+et, c+1)
+        t, c, ref = agg.get(e["name"], (0.0, 0, None))
+        agg[e["name"]] = (t+et, c+1, e["ref"])
         total += et
     if agg and total > 0:
-      from tabulate import tabulate
       items = sorted(agg.items(), key=lambda kv:kv[1][0], reverse=True)
-      num_rows = 20
-      table = [[format_colored(name), time_to_str(t, w=9), c, f"{(t/total*100.0):.2f}%"] for name,(t,c) in items[:num_rows]]
-      if items[num_rows:]:
-        other_t = sum(t for _,(t,_) in items[num_rows:])
-        other_c = sum(c for _,(_,c) in items[num_rows:])
-        table.append(["Other", time_to_str(other_t, w=9), other_c, f"{(other_t/total*100.0):.2f}%"])
-      print(tabulate(table, headers=["name", "total", "count", "pct"], tablefmt="github"))
+      num_rows = args.top
+      for name,(t,c,ref) in items[:num_rows]:
+        print(f"{format_colored(name)}{' ' * max(0, 36 - ansilen(name))} {time_to_str(t, w=9)} {c:7d} {t/total*100.0:6.2f}%")
+        if ref is not None: print_kernel(ref)
+      if num_rows > 0 and items[num_rows:]:
+        other_t = sum(t for _,(t,_,_) in items[num_rows:])
+        other_c = sum(c for _,(_,c,_) in items[num_rows:])
+        print(f"{'Other':<36} {time_to_str(other_t, w=9)} {other_c:7d} {other_t/total*100.0:6.2f}%")
     return None
 
   # ** Graph rewrites printer
@@ -180,6 +189,7 @@ def get_arg_parser() -> argparse.ArgumentParser:
   g_opts = parser.add_argument_group("optional args")
   g_opts.add_argument("-s", "--src", type=str, default=None, metavar="NAME", help="Select a data source (default: list all sources)")
   g_opts.add_argument("-i", "--item", type=str, default=None, metavar="NAME", help="Select an item within the source (default: list all items)")
+  g_opts.add_argument("--top", type=int, default=20, metavar="COUNT", help="Number of top rows to print (default: 20, set -1 to print all)")
   g_opts.add_argument("--profile-path", type=pathlib.Path, metavar="PATH", help="Path to profile.pkl (optional file, default: latest profile)",
                       default=pathlib.Path(temp("profile.pkl", append_user=True)))
   g_opts.add_argument("--rewrites-path", type=pathlib.Path, metavar="PATH", help="Path to rewrites.pkl (optional file, default: latest rewrites)",