[dpdk-dev] [PATCH v2] app/testpmd: add memory dump command

[Xueming Li]

Introduce new command to dump memory statistics of each socket,
summary, also show changes since last call.

Usage:
    dump_socket_mem

Signed-off-by: Xueming Li <xuemingl at mellanox.com>
---
 app/test-pmd/cmdline.c                      | 53 +++++++++++++++++++++++++++++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  6 ++++
 2 files changed, 59 insertions(+)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 274e391..f7a230b 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -9568,6 +9568,56 @@ struct cmd_dump_result {
 #undef DUMP_SIZE
 }
 
+
+/* Dump the socket memory statistics on console */
+static void
+dump_socket_mem(FILE *f)
+{
+	struct rte_malloc_socket_stats socket_stats;
+	unsigned int i;
+	size_t total = 0;
+	size_t alloc = 0;
+	size_t free = 0;
+	unsigned int n_alloc = 0;
+	unsigned int n_free = 0;
+	static size_t last_allocs;
+	static size_t last_total;
+
+
+	for (i = 0; i < RTE_MAX_NUMA_NODES; i++) {
+		if (rte_malloc_get_socket_stats(i, &socket_stats) ||
+		    !socket_stats.heap_totalsz_bytes)
+			continue;
+		total += socket_stats.heap_totalsz_bytes;
+		alloc += socket_stats.heap_allocsz_bytes;
+		free += socket_stats.heap_freesz_bytes;
+		n_alloc += socket_stats.alloc_count;
+		n_free += socket_stats.free_count;
+		fprintf(f,
+			"Socket %u: size(M) total: %.6lf alloc: %.6lf(%.3lf%%) free: %.6lf \tcount alloc: %-4u free: %u\n",
+			i,
+			(double)socket_stats.heap_totalsz_bytes / (1024 * 1024),
+			(double)socket_stats.heap_allocsz_bytes / (1024 * 1024),
+			(double)socket_stats.heap_allocsz_bytes * 100 /
+			(double)socket_stats.heap_totalsz_bytes,
+			(double)socket_stats.heap_freesz_bytes / (1024 * 1024),
+			socket_stats.alloc_count,
+			socket_stats.free_count);
+	}
+	fprintf(f,
+		"Total   : size(M) total: %.6lf alloc: %.6lf(%.3lf%%) free: %.6lf \tcount alloc: %-4u free: %u\n",
+		(double)total / (1024 * 1024), (double)alloc / (1024 * 1024),
+		(double)alloc * 100 / (double)total,
+		(double)free / (1024 * 1024),
+		n_alloc, n_free);
+	if (last_allocs)
+		fprintf(stdout, "Memory total change: %.6lf(M), allocation change: %.6lf(M)\n",
+			((double)total - (double)last_total) / (1024 * 1024),
+			(double)(alloc - (double)last_allocs) / 1024 /1024);
+	last_allocs = alloc;
+	last_total = total;
+}
+
 static void cmd_dump_parsed(void *parsed_result,
 			    __attribute__((unused)) struct cmdline *cl,
 			    __attribute__((unused)) void *data)
@@ -9576,6 +9626,8 @@ static void cmd_dump_parsed(void *parsed_result,
 
 	if (!strcmp(res->dump, "dump_physmem"))
 		rte_dump_physmem_layout(stdout);
+	else if (!strcmp(res->dump, "dump_socket_mem"))
+		dump_socket_mem(stdout);
 	else if (!strcmp(res->dump, "dump_memzone"))
 		rte_memzone_dump(stdout);
 	else if (!strcmp(res->dump, "dump_malloc")) {
@@ -9604,6 +9656,7 @@ static void cmd_dump_parsed(void *parsed_result,
 	TOKEN_STRING_INITIALIZER(struct cmd_dump_result, dump,
 		"dump_physmem#"
 		"dump_memzone#"
+		"dump_socket_mem#"
 		"dump_struct_sizes#"
 		"dump_ring#"
 		"dump_mempool#"
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 1a9879f..0942ae5 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -539,6 +539,12 @@ Dumps the layout of all memory zones::
 
    testpmd> dump_memzone
 
+dump socket
+~~~~~~~~~~~~
+
+Dumps the memory usage of all sockets::
+
+   testpmd> dump_socket_mem
 
 dump struct size
 ~~~~~~~~~~~~~~~~
-- 
1.8.3.1