module_adapter: dp: Decrease default heap size from 20k to 16k

Jyri Sarha · lgirdwood · commit a32d983e89de · 2026-03-03T13:32:42.000Z
Decrease default heap size from 20k to 16k. It appears the 20k heap
size is too big for the system to survive our CI capture stress
test. Luckily 16k is enough for SRC module in that test, so lets drop
the default to a number that works better than previous.

Signed-off-by: Jyri Sarha &lt;jyri.sarha@linux.intel.com&gt;
diff --git a/src/audio/module_adapter/module_adapter.c b/src/audio/module_adapter/module_adapter.c
@@ -62,7 +62,7 @@ static struct dp_heap_user *module_adapter_dp_heap_new(const struct comp_ipc_con
 {
 	/* src-lite with 8 channels has been seen allocating 14k in one go */
 	/* FIXME: the size will be derived from configuration */
-	const size_t buf_size = 20 * 1024;
+	const size_t buf_size = 16 * 1024;
 
 	/* Keep uncached to match the default SOF heap! */
 	uint8_t *mod_heap_mem = rballoc_align(SOF_MEM_FLAG_USER | SOF_MEM_FLAG_COHERENT,

Original file line number	Diff line number	Diff line change
`@@ -62,7 +62,7 @@ static struct dp_heap_user *module_adapter_dp_heap_new(const struct comp_ipc_con`
`62`	`62`	`{`
`63`	`63`	`/* src-lite with 8 channels has been seen allocating 14k in one go */`
`64`	`64`	`/* FIXME: the size will be derived from configuration */`
`65`		`- const size_t buf_size = 20 * 1024;`
	`65`	`+ const size_t buf_size = 16 * 1024;`
`66`	`66`
`67`	`67`	`/* Keep uncached to match the default SOF heap! */`
`68`	`68`	`uint8_t *mod_heap_mem = rballoc_align(SOF_MEM_FLAG_USER \| SOF_MEM_FLAG_COHERENT,`