Increase default stdio buffer sizes

src/slurmd/io.h

@@ -35,8 +35,8 @@
  * The message cache uses up free message buffers, so STDIO_MAX_MSG_CACHE
  * must be a number smaller than STDIO_MAX_FREE_BUF.
  */
-#define STDIO_MAX_FREE_BUF 10
-#define STDIO_MAX_MSG_CACHE 5
+#define STDIO_MAX_FREE_BUF 1024
+#define STDIO_MAX_MSG_CACHE 128
 
 struct io_buf {
 	int ref_count;

src/srun/io.h

@@ -30,6 +30,8 @@
 #include "src/common/io_hdr.h"
 #include "src/srun/srun_job.h"
 
+#define STDIO_MAX_FREE_BUF 1024
+
 struct io_buf {
 	int ref_count;
 	uint32_t length;

src/srun/srun_job.c

@@ -494,11 +494,11 @@ _job_create_internal(allocation_info_t *info)
 	/* "nhosts" number of IO protocol sockets */
 	job->ioserver = (eio_obj_t **)xmalloc(job->nhosts*sizeof(eio_obj_t *));
 	job->free_incoming = list_create(NULL); /* FIXME! Needs destructor */
-	for (i = 0; i < 10; i++) {
+	for (i = 0; i < STDIO_MAX_FREE_BUF; i++) {
 		list_enqueue(job->free_incoming, alloc_io_buf());
 	}
 	job->free_outgoing = list_create(NULL); /* FIXME! Needs destructor */
-	for (i = 0; i < 10; i++) {
+	for (i = 0; i < STDIO_MAX_FREE_BUF; i++) {
 		list_enqueue(job->free_outgoing, alloc_io_buf());
 	}