diff --git a/core/src/sigverify_stage.rs b/core/src/sigverify_stage.rs
index 75542050ff..412a399744 100644
--- a/core/src/sigverify_stage.rs
+++ b/core/src/sigverify_stage.rs
@@ -7,6 +7,7 @@
 
 use {
     crate::sigverify,
+    core::time::Duration,
     crossbeam_channel::{SendError, Sender as CrossbeamSender},
     itertools::Itertools,
     solana_measure::measure::Measure,
@@ -288,12 +289,12 @@ impl SigVerifyStage {
         let verifier = verifier.clone();
         let mut stats = SigVerifierStats::default();
         let mut last_print = Instant::now();
-        const MAX_DEDUPER_AGE_MS: u64 = 2_000;
+        const MAX_DEDUPER_AGE: Duration = Duration::from_secs(2);
         const MAX_DEDUPER_ITEMS: u32 = 1_000_000;
         Builder::new()
             .name("solana-verifier".to_string())
             .spawn(move || {
-                let mut deduper = Deduper::new(MAX_DEDUPER_ITEMS, MAX_DEDUPER_AGE_MS);
+                let mut deduper = Deduper::new(MAX_DEDUPER_ITEMS, MAX_DEDUPER_AGE);
                 loop {
                     deduper.reset();
                     if let Err(e) = Self::verifier(
diff --git a/perf/benches/dedup.rs b/perf/benches/dedup.rs
index cba4eca82c..c2d72f0839 100644
--- a/perf/benches/dedup.rs
+++ b/perf/benches/dedup.rs
@@ -9,6 +9,7 @@ use {
         packet::{to_packet_batches, PacketBatch},
         sigverify,
     },
+    std::time::Duration,
     test::Bencher,
 };
 
@@ -23,7 +24,7 @@ fn test_packet_with_size(size: usize, rng: &mut ThreadRng) -> Vec<u8> {
 
 fn do_bench_dedup_packets(bencher: &mut Bencher, mut batches: Vec<PacketBatch>) {
     // verify packets
-    let mut deduper = sigverify::Deduper::new(1_000_000, 2_000);
+    let mut deduper = sigverify::Deduper::new(1_000_000, Duration::from_millis(2_000));
     bencher.iter(|| {
         let _ans = deduper.dedup_packets(&mut batches);
         deduper.reset();
@@ -111,7 +112,7 @@ fn bench_dedup_baseline(bencher: &mut Bencher) {
 #[bench]
 #[ignore]
 fn bench_dedup_reset(bencher: &mut Bencher) {
-    let mut deduper = sigverify::Deduper::new(1_000_000, 0);
+    let mut deduper = sigverify::Deduper::new(1_000_000, Duration::from_millis(0));
     bencher.iter(|| {
         deduper.reset();
     });
diff --git a/perf/src/sigverify.rs b/perf/src/sigverify.rs
index 382fe4b950..daf0026145 100644
--- a/perf/src/sigverify.rs
+++ b/perf/src/sigverify.rs
@@ -432,7 +432,7 @@ pub struct Deduper {
 }
 
 impl Deduper {
-    pub fn new(size: u32, max_age_ms: u64) -> Self {
+    pub fn new(size: u32, max_age: Duration) -> Self {
         let mut filter: Vec<AtomicU64> = Vec::with_capacity(size as usize);
         filter.resize_with(size as usize, Default::default);
         let seed = thread_rng().gen();
@@ -440,7 +440,7 @@ impl Deduper {
             filter,
             seed,
             age: Instant::now(),
-            max_age: Duration::from_millis(max_age_ms),
+            max_age,
             saturated: AtomicBool::new(false),
         }
     }
@@ -460,10 +460,10 @@ impl Deduper {
         }
     }
 
-    fn dedup_packet(&self, count: &AtomicU64, packet: &mut Packet) {
+    fn dedup_packet(&self, packet: &mut Packet) -> u64 {
         // If this packet was already marked as discard, drop it
         if packet.meta.discard() {
-            return;
+            return 0;
         }
         let mut hasher = AHasher::new_with_keys(self.seed.0, self.seed.1);
         hasher.write(&packet.data[0..packet.meta.size]);
@@ -479,19 +479,16 @@ impl Deduper {
         }
         if hash == prev & hash {
             packet.meta.set_discard(true);
-            count.fetch_add(1, Ordering::Relaxed);
+            return 1;
         }
+        0
     }
 
     pub fn dedup_packets(&self, batches: &mut [PacketBatch]) -> u64 {
-        let count = AtomicU64::new(0);
-        batches.iter_mut().for_each(|batch| {
-            batch
-                .packets
-                .iter_mut()
-                .for_each(|p| self.dedup_packet(&count, p))
-        });
-        count.load(Ordering::Relaxed)
+        batches
+            .iter_mut()
+            .flat_map(|batch| batch.packets.iter_mut().map(|p| self.dedup_packet(p)))
+            .sum()
     }
 }
 
@@ -1346,14 +1343,14 @@ mod tests {
         let mut batches =
             to_packet_batches(&std::iter::repeat(tx).take(1024).collect::<Vec<_>>(), 128);
         let packet_count = sigverify::count_packets_in_batches(&batches);
-        let filter = Deduper::new(1_000_000, 0);
+        let filter = Deduper::new(1_000_000, Duration::from_millis(0));
         let discard = filter.dedup_packets(&mut batches) as usize;
         assert_eq!(packet_count, discard + 1);
     }
 
     #[test]
     fn test_dedup_diff() {
-        let mut filter = Deduper::new(1_000_000, 0);
+        let mut filter = Deduper::new(1_000_000, Duration::from_millis(0));
         let mut batches = to_packet_batches(&(0..1024).map(|_| test_tx()).collect::<Vec<_>>(), 128);
 
         let discard = filter.dedup_packets(&mut batches) as usize;
@@ -1368,7 +1365,7 @@ mod tests {
     #[test]
     #[ignore]
     fn test_dedup_saturated() {
-        let filter = Deduper::new(1_000_000, 0);
+        let filter = Deduper::new(1_000_000, Duration::from_millis(0));
         let mut discard = 0;
         assert!(!filter.saturated.load(Ordering::Relaxed));
         for i in 0..1000 {
@@ -1385,7 +1382,7 @@ mod tests {
 
     #[test]
     fn test_dedup_false_positive() {
-        let filter = Deduper::new(1_000_000, 0);
+        let filter = Deduper::new(1_000_000, Duration::from_millis(0));
         let mut discard = 0;
         for i in 0..10 {
             let mut batches =