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authorBjörn-Egil Dahlberg <[email protected]>2015-03-12 10:33:29 +0100
committerBjörn-Egil Dahlberg <[email protected]>2015-03-12 10:33:29 +0100
commit306d7bc2282c8ff9545ae3a9e958b2746677958f (patch)
tree0431c97ed38598371e4c44f3ab1d5a7fe0696925
parentc87e11b41c28318086ec612f5ad10bbc9d26f955 (diff)
parent93f0ff928b89dce4e62e4017065d87fcc5cf4cf8 (diff)
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Merge branch 'egil/process_dictionary-initial-size/OTP-12535'
* egil/process_dictionary-initial-size/OTP-12535: erts: Document option 'hpds' erts: Enable command line argument for initial pd size
-rw-r--r--erts/doc/src/erl.xml5
-rw-r--r--erts/emulator/beam/erl_init.c13
-rw-r--r--erts/emulator/beam/erl_process_dict.c2
-rw-r--r--erts/emulator/beam/erl_vm.h1
-rw-r--r--erts/etc/common/erlexec.c1
5 files changed, 21 insertions, 1 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 16000191dc..c25c9eeedb 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -588,6 +588,11 @@
<p>Sets the default binary virtual heap size of processes to the size
<c><![CDATA[Size]]></c>.</p>
</item>
+ <tag><c><![CDATA[+hpds Size]]></c></tag>
+ <item>
+ <p>Sets the initial process dictionary size of processes to the size
+ <c><![CDATA[Size]]></c>.</p>
+ </item>
<tag><c><![CDATA[+K true | false]]></c></tag>
<item>
<p>Enables or disables the kernel poll functionality if
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 77445ef1ff..fe065e196d 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -191,6 +191,8 @@ int erts_disable_tolerant_timeofday; /* Time correction can be disabled it is
int erts_atom_table_size = ATOM_LIMIT; /* Maximum number of atoms */
+int erts_pd_initial_size = 10;
+
int erts_modified_timing_level;
int erts_no_crash_dump = 0; /* Use -d to suppress crash dump. */
@@ -516,6 +518,8 @@ void erts_usage(void)
H_DEFAULT_SIZE);
erts_fprintf(stderr, "-hmbs size set minimum binary virtual heap size in words (default %d)\n",
VH_DEFAULT_SIZE);
+ erts_fprintf(stderr, "-hpds size initial process dictionary size (default %d)\n",
+ erts_pd_initial_size);
/* erts_fprintf(stderr, "-i module set the boot module (default init)\n"); */
@@ -1405,6 +1409,7 @@ erl_start(int argc, char **argv)
*
* h|ms - min_heap_size
* h|mbs - min_bin_vheap_size
+ * h|pds - erts_pd_initial_size
*
*/
if (has_prefix("mbs", sub_param)) {
@@ -1422,6 +1427,14 @@ erl_start(int argc, char **argv)
erts_usage();
}
VERBOSE(DEBUG_SYSTEM, ("using minimum heap size %d\n", H_MIN_SIZE));
+ } else if (has_prefix("pds", sub_param)) {
+ arg = get_arg(sub_param+3, argv[i+1], &i);
+ if ((erts_pd_initial_size = atoi(arg)) <= 0) {
+ erts_fprintf(stderr, "bad initial process dictionary size %s\n", arg);
+ erts_usage();
+ }
+ VERBOSE(DEBUG_SYSTEM, ("using initial process dictionary size %d\n",
+ erts_pd_initial_size));
} else {
/* backward compatibility */
arg = get_arg(argv[i]+2, argv[i+1], &i);
diff --git a/erts/emulator/beam/erl_process_dict.c b/erts/emulator/beam/erl_process_dict.c
index 3ce707efda..00761f2d0e 100644
--- a/erts/emulator/beam/erl_process_dict.c
+++ b/erts/emulator/beam/erl_process_dict.c
@@ -47,7 +47,7 @@
/* Hash constant macros */
#define MAX_HASH 1342177280UL
-#define INITIAL_SIZE 10
+#define INITIAL_SIZE (erts_pd_initial_size)
/* Hash utility macros */
#define HASH_RANGE(PDict) ((PDict)->homeSize + (PDict)->splitPosition)
diff --git a/erts/emulator/beam/erl_vm.h b/erts/emulator/beam/erl_vm.h
index 78d98229d8..6e9216bef3 100644
--- a/erts/emulator/beam/erl_vm.h
+++ b/erts/emulator/beam/erl_vm.h
@@ -172,6 +172,7 @@ extern int H_MIN_SIZE; /* minimum (heap + stack) */
extern int BIN_VH_MIN_SIZE; /* minimum virtual (bin) heap */
extern int erts_atom_table_size;/* Atom table size */
+extern int erts_pd_initial_size;/* Initial Process dictionary table size */
#define ORIG_CREATION 0
#define INTERNAL_CREATION 255
diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index 5ebde8ca3c..b68e109b43 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -143,6 +143,7 @@ static char *pluss_val_switches[] = {
static char *plush_val_switches[] = {
"ms",
"mbs",
+ "pds",
"",
NULL
};