diff --git a/src/Cargo.lock b/src/Cargo.lock
index 583e5a0..98562bb 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -489,6 +489,19 @@ dependencies = [
  "impl-tools 0.11.4",
 ]
 
+[[package]]
+name = "console"
+version = "0.15.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "054ccb5b10f9f2cbf51eb355ca1d05c2d279ce1804688d0db74b4733a5aeafd8"
+dependencies = [
+ "encode_unicode",
+ "libc",
+ "once_cell",
+ "unicode-width",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -747,6 +760,12 @@ version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
+[[package]]
+name = "encode_unicode"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34aa73646ffb006b8f5147f3dc182bd4bcb190227ce861fc4a4844bf8e3cb2c0"
+
 [[package]]
 name = "enum-as-inner"
 version = "0.6.1"
@@ -1216,6 +1235,19 @@ dependencies = [
  "hashbrown 0.17.0",
 ]
 
+[[package]]
+name = "indicatif"
+version = "0.17.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "183b3088984b400f4cfac3620d5e076c84da5364016b4f49473de574b2586235"
+dependencies = [
+ "console",
+ "number_prefix",
+ "portable-atomic",
+ "unicode-width",
+ "web-time",
+]
+
 [[package]]
 name = "infer"
 version = "0.19.0"
@@ -1689,6 +1721,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "number_prefix"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"
+
 [[package]]
 name = "obicompactvec"
 version = "0.1.0"
@@ -1723,6 +1761,7 @@ name = "obikmer"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "indicatif",
  "memmap2",
  "niffler 3.0.0",
  "obidebruinj",
@@ -1748,6 +1787,7 @@ version = "0.1.0"
 dependencies = [
  "cacheline-ef",
  "epserde 0.8.0",
+ "indicatif",
  "memmap2",
  "niffler 3.0.0",
  "obicompactvec",
@@ -2934,6 +2974,12 @@ version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
+[[package]]
+name = "unicode-width"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4ac048d71ede7ee76d585517add45da530660ef4390e49b098733c6e897f254"
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"
@@ -3111,6 +3157,16 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "0.26.11"
diff --git a/src/obikmer/Cargo.toml b/src/obikmer/Cargo.toml
index d8a642d..95ad03f 100644
--- a/src/obikmer/Cargo.toml
+++ b/src/obikmer/Cargo.toml
@@ -23,6 +23,7 @@ niffler      = "3"
 rayon        = "1"
 ph           = "0.11"
 memmap2      = "0.9"
+indicatif = "0.17"
 tracing = "0.1.44"
 tracing-subscriber = { version = "0.3", features = ["fmt", "env-filter"] }
 pprof = { version = "0.13", features = ["prost-codec"], optional = true }
diff --git a/src/obikmer/src/cmd/partition.rs b/src/obikmer/src/cmd/partition.rs
index 073c235..c466267 100644
--- a/src/obikmer/src/cmd/partition.rs
+++ b/src/obikmer/src/cmd/partition.rs
@@ -1,6 +1,8 @@
 use std::path::PathBuf;
+use std::time::{Duration, Instant};
 
 use clap::Args;
+use indicatif::{ProgressBar, ProgressStyle};
 use obikpartitionner::KmerPartition;
 use obisys::{Reporter, Stage};
 use obikseq::{RoutableSuperKmer, set_k, set_m};
@@ -49,12 +51,45 @@ pub fn run(args: PartitionArgs) {
         |?  { move |rope| obiread::normalize_sequence_chunk(rope, k) }                : RawChunk => NormChunk,
         |   { move |rope| obiskbuilder::build_superkmers(rope, k, level_max, theta) }: NormChunk => Batch,
     };
+
+    let pb = ProgressBar::new_spinner();
+    pb.set_style(
+        ProgressStyle::with_template("{spinner} scatter — {msg}  {elapsed}")
+            .unwrap()
+            .tick_strings(&["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]),
+    );
+    pb.enable_steady_tick(Duration::from_millis(100));
+
+    let mut total_bases: u64 = 0;
+    let mut ema_rate: f64 = 0.0;
+    let mut last_t = Instant::now();
+    let mut last_bases: u64 = 0;
+    const ALPHA: f64 = 0.15;
+
     for batch in pipe.apply(path_source, n_workers, 1) {
+        total_bases += batch.iter().map(|sk| sk.seql() as u64).sum::<u64>();
+        let now = Instant::now();
+        let dt = now.duration_since(last_t).as_secs_f64();
+        if dt > 0.1 {
+            let instant = (total_bases - last_bases) as f64 / dt;
+            ema_rate = ALPHA * instant + (1.0 - ALPHA) * ema_rate;
+            last_t = now;
+            last_bases = total_bases;
+            let bp = total_bases as f64;
+            let (count_str, rate_str) = if bp >= 1e9 {
+                (format!("{:.2} Gbp", bp / 1e9), format!("{:.0} Mbp/s", ema_rate / 1e6))
+            } else {
+                (format!("{:.0} Mbp", bp / 1e6), format!("{:.0} Mbp/s", ema_rate / 1e6))
+            };
+            pb.set_message(format!("{count_str}  {rate_str}"));
+        }
         kp.write_batch(batch).unwrap_or_else(|e| {
             eprintln!("error: {e}");
             std::process::exit(1)
         });
     }
+    pb.finish_and_clear();
+
     kp.close().expect("close error");
     rep.push(t.stop());
 
diff --git a/src/obikpartitionner/Cargo.toml b/src/obikpartitionner/Cargo.toml
index 853e630..8e94ff2 100644
--- a/src/obikpartitionner/Cargo.toml
+++ b/src/obikpartitionner/Cargo.toml
@@ -25,3 +25,4 @@ epserde = "0.8"
 memmap2 = "0.9.10"
 obicompactvec = { path = "../obicompactvec" }
 ptr_hash = "1.1"
+indicatif = "0.17"
diff --git a/src/obikpartitionner/src/partition.rs b/src/obikpartitionner/src/partition.rs
index 61698e2..ab07083 100644
--- a/src/obikpartitionner/src/partition.rs
+++ b/src/obikpartitionner/src/partition.rs
@@ -2,7 +2,10 @@ use std::collections::{BTreeMap, HashMap};
 use std::fs;
 use std::io;
 use std::path::{Path, PathBuf};
-use tracing::{debug, info};
+use std::time::Instant;
+use tracing::debug;
+
+use indicatif::{ProgressBar, ProgressStyle};
 
 use cacheline_ef::{CachelineEf, CachelineEfVec};
 use epserde::ser::Serialize as EpSerialize;
@@ -55,7 +58,7 @@ impl KmerPartition {
         minimizer_size: usize,
         force: bool,
     ) -> SKResult<Self> {
-        Self::create_with(path, n_bits, kmer_size, minimizer_size, Level::Three, force)
+        Self::create_with(path, n_bits, kmer_size, minimizer_size, Level::One, force)
     }
 
     pub fn create_with<P: AsRef<Path>>(
@@ -256,18 +259,33 @@ impl KmerPartition {
         let n_threads = rayon::current_num_threads().max(1) as u64;
         let chunk_kmers = chunk_size_from_ram(available / n_threads);
 
+        let pb = ProgressBar::new(self.n_partitions as u64);
+        pb.set_style(
+            ProgressStyle::with_template(
+                "counting [{bar:40}] {pos}/{len} ({percent}%)  {per_sec}  eta {eta}  {msg}",
+            )
+            .unwrap()
+            .progress_chars("█▌░"),
+        );
+
         let results: Vec<SKResult<()>> = (0..self.n_partitions)
             .into_par_iter()
             .map(|i| {
                 let dir = root.join(format!("part_{:05}", i));
                 let dedup_path = dir.join(format!("dereplicated.{SK_EXT}"));
                 if !dedup_path.exists() {
+                    pb.inc(1);
                     return Ok(());
                 }
-                info!("counting kmers in partition {}/{}", i, self.n_partitions);
-                count_partition(&dir, &dedup_path, chunk_kmers)
+                let t = Instant::now();
+                let result = count_partition(&dir, &dedup_path, chunk_kmers);
+                pb.set_message(format!("last {:.0}ms", t.elapsed().as_millis()));
+                pb.inc(1);
+                result
             })
             .collect();
+
+        pb.finish_and_clear();
         for r in results {
             r?;
         }