diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87bb3bff7..35379f8d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@ argument or resolve the type ambiguity by casting to the intended type.
 * #4720 Fix chunk exclusion for prepared statements and dst changes
 * #4738 Fix the assorted epoll_ctl() errors that could occur with COPY into a distributed hypertable
 * #4739 Fix continuous aggregate migrate check constraint
+* #4756 Improve compression job IO performance
 * #4745 Fix FK constraint violation error while insert into hypertable which references partitioned table
 
 **Thanks**
diff --git a/tsl/src/compression/api.c b/tsl/src/compression/api.c
index 1666320a9..d2cd456e2 100644
--- a/tsl/src/compression/api.c
+++ b/tsl/src/compression/api.c
@@ -159,7 +159,7 @@ compresschunkcxt_init(CompressChunkCxt *cxt, Cache *hcache, Oid hypertable_relid
 }
 
 static void
-preserve_uncompressed_chunk_stats(Oid chunk_relid)
+disable_autovacuum_on_chunk(Oid chunk_relid)
 {
 	AlterTableCmd at_cmd = {
 		.type = T_AlterTableCmd,
@@ -167,20 +167,6 @@ preserve_uncompressed_chunk_stats(Oid chunk_relid)
 		.def = (Node *) list_make1(
 			makeDefElem("autovacuum_enabled", (Node *) makeString("false"), -1)),
 	};
-	VacuumRelation vr = {
-		.type = T_VacuumRelation,
-		.relation = NULL,
-		.oid = chunk_relid,
-		.va_cols = NIL,
-	};
-	VacuumStmt vs = {
-		.type = T_VacuumStmt,
-		.rels = list_make1(&vr),
-		.is_vacuumcmd = false,
-		.options = NIL,
-	};
-
-	ExecVacuum(NULL, &vs, true);
 	ts_alter_table_with_event_trigger(chunk_relid, NULL, list_make1(&at_cmd), false);
 }
 
@@ -234,8 +220,8 @@ compress_chunk_impl(Oid hypertable_relid, Oid chunk_relid)
 	LockRelationOid(cxt.compress_ht->main_table_relid, AccessShareLock);
 	LockRelationOid(cxt.srcht_chunk->table_id, ShareLock);
 
-	/* Perform an analyze on the chunk to get up-to-date stats before compressing */
-	preserve_uncompressed_chunk_stats(chunk_relid);
+	/* Disabling autovacuum on chunk which should be empty while in compressed state */
+	disable_autovacuum_on_chunk(chunk_relid);
 
 	/* acquire locks on catalog tables to keep till end of txn */
 	LockRelationOid(catalog_get_table_id(ts_catalog_get(), HYPERTABLE_COMPRESSION),
diff --git a/tsl/src/compression/compression.c b/tsl/src/compression/compression.c
index efbf728c0..45dc6b475 100644
--- a/tsl/src/compression/compression.c
+++ b/tsl/src/compression/compression.c
@@ -20,6 +20,7 @@
 #include <funcapi.h>
 #include <libpq/pqformat.h>
 #include <miscadmin.h>
+#include <nodes/pg_list.h>
 #include <storage/lmgr.h>
 #include <storage/predicate.h>
 #include <utils/builtins.h>
@@ -390,6 +391,7 @@ static void compress_chunk_populate_sort_info_for_column(Oid table,
 														 const ColumnCompressionInfo *column,
 														 AttrNumber *att_nums, Oid *sort_operator,
 														 Oid *collation, bool *nulls_first);
+static void run_analyze_on_chunk(Oid chunk_relid);
 
 static Tuplesortstate *
 compress_chunk_sort_relation(Relation in_rel, int n_keys, const ColumnCompressionInfo **keys)
@@ -441,6 +443,12 @@ compress_chunk_sort_relation(Relation in_rel, int n_keys, const ColumnCompressio
 
 	heap_endscan(heapScan);
 
+	/* Perform an analyze on the chunk to get up-to-date stats before compressing.
+	 * We do it at this point because we've just read out the entire chunk into
+	 * tuplesort, so its pages are likely to be cached and we can save on I/O.
+	 */
+	run_analyze_on_chunk(in_rel->rd_id);
+
 	ExecDropSingleTupleTableSlot(heap_tuple_slot);
 
 	tuplesort_performsort(tuplesortstate);
@@ -488,6 +496,25 @@ compress_chunk_populate_sort_info_for_column(Oid table, const ColumnCompressionI
 	ReleaseSysCache(tp);
 }
 
+static void
+run_analyze_on_chunk(Oid chunk_relid)
+{
+	VacuumRelation vr = {
+		.type = T_VacuumRelation,
+		.relation = NULL,
+		.oid = chunk_relid,
+		.va_cols = NIL,
+	};
+	VacuumStmt vs = {
+		.type = T_VacuumStmt,
+		.rels = list_make1(&vr),
+		.is_vacuumcmd = false,
+		.options = NIL,
+	};
+
+	ExecVacuum(NULL, &vs, true);
+}
+
 /********************
  ** row_compressor **
  ********************/