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-rw-r--r--erts/doc/src/erts_alloc.xml22
-rw-r--r--erts/emulator/beam/erl_alloc.c6
-rw-r--r--erts/emulator/sys/common/erl_mmap.c12
-rw-r--r--erts/emulator/sys/common/erl_mmap.h4
-rw-r--r--erts/emulator/test/alloc_SUITE.erl12
-rw-r--r--erts/etc/common/erlexec.c2
6 files changed, 31 insertions, 27 deletions
diff --git a/erts/doc/src/erts_alloc.xml b/erts/doc/src/erts_alloc.xml
index 70029dbeab..8f5e8cd10b 100644
--- a/erts/doc/src/erts_alloc.xml
+++ b/erts/doc/src/erts_alloc.xml
@@ -271,15 +271,6 @@
memory segment cache is not reused if its size exceeds the
requested size with more than relative max cache bad fit
percent of the requested size. Default value is 20.</item>
- <tag><marker id="MMscmgc"><c><![CDATA[+MMscmgc <amount>]]></c></marker></tag>
- <item>
- Set <seealso marker="#MMscs">super carrier</seealso> max guaranteed
- no of carriers. This parameter defaults to <c>65536</c>. This
- parameter determines an amount of pre-allocated structures that is
- needed in order to keep track of different areas in the super carrier.
- When the system runs out of such structures it may crash due to an
- out of memory condition.
- </item>
<tag><marker id="MMsco"><c><![CDATA[+MMsco true|false]]></c></marker></tag>
<item>
Set <seealso marker="#MMscs">super carrier</seealso> only flag. This
@@ -295,6 +286,19 @@
disabled on halfword heap systems. This flag will be
ignored on halfword heap systems.
</item>
+ <tag><marker id="MMscrfsd"><c><![CDATA[+MMscrfsd <amount>]]></c></marker></tag>
+ <item>
+ Set <seealso marker="#MMscs">super carrier</seealso> reserved
+ free segment descriptors. This parameter defaults to <c>65536</c>.
+ This parameter determines the amount of memory to reserve for
+ free segment descriptors used by the super carrier. If the system
+ runs out of reserved memory for free segment descriptors, other
+ memory will be used. This may however cause fragmentation issues,
+ so you want to ensure that this never happens. The maximum amount
+ of free segment descriptors used can be retrieved from the
+ <c>erts_mmap</c> tuple part of the result from calling
+ <seealso marker="erts:erlang#system_info_allocator_tuple">erlang:system_info({allocator, mseg_alloc})</seealso>.
+ </item>
<tag><marker id="MMscrpm"><c><![CDATA[+MMscrpm true|false]]></c></marker></tag>
<item>
Set <seealso marker="#MMscs">super carrier</seealso> reserve physical
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index fb0f47d1b7..b5ba9bb94a 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -1504,11 +1504,11 @@ handle_args(int *argc, char **argv, erts_alc_hndl_args_init_t *init)
#endif
get_bool_value(argv[i]+8, argv, &i);
}
- else if (has_prefix("scmgc", argv[i]+3)) {
+ else if (has_prefix("scrfsd", argv[i]+3)) {
#if HAVE_ERTS_MSEG
- init->mseg.mmap.scmgc =
+ init->mseg.mmap.scrfsd =
#endif
- get_amount_value(argv[i]+8, argv, &i);
+ get_amount_value(argv[i]+9, argv, &i);
}
else {
bad_param(param, param+2);
diff --git a/erts/emulator/sys/common/erl_mmap.c b/erts/emulator/sys/common/erl_mmap.c
index a9da7430fb..3f6813e1a5 100644
--- a/erts/emulator/sys/common/erl_mmap.c
+++ b/erts/emulator/sys/common/erl_mmap.c
@@ -2057,7 +2057,7 @@ static struct {
Eterm scs;
Eterm sco;
Eterm scrpm;
- Eterm scmgc;
+ Eterm scrfsd;
int is_initialized;
erts_mtx_t init_mutex;
@@ -2090,7 +2090,7 @@ static void init_atoms(void)
AM_INIT(scs);
AM_INIT(sco);
AM_INIT(scrpm);
- AM_INIT(scmgc);
+ AM_INIT(scrfsd);
am.is_initialized = 1;
}
erts_mtx_unlock(&am.init_mutex);
@@ -2121,7 +2121,7 @@ erts_mmap_init(ErtsMMapInit *init)
#if defined(HARD_DEBUG) || 0
erts_fprintf(stderr, "erts_mmap: scs = %bpu\n", init->scs);
erts_fprintf(stderr, "erts_mmap: sco = %i\n", init->sco);
- erts_fprintf(stderr, "erts_mmap: scmgc = %i\n", init->scmgc);
+ erts_fprintf(stderr, "erts_mmap: scrfsd = %i\n", init->scrfsd);
#endif
erts_page_inv_mask = pagesize - 1;
if (pagesize & erts_page_inv_mask)
@@ -2234,7 +2234,7 @@ erts_mmap_init(ErtsMMapInit *init)
mmap_state.no_os_mmap = init->sco;
- desc_size = init->scmgc;
+ desc_size = init->scrfsd;
if (desc_size < 100)
desc_size = 100;
desc_size *= sizeof(ErtsFreeSegDesc);
@@ -2418,7 +2418,7 @@ Eterm erts_mmap_info_options(char *prefix,
if (mmap_state.supercarrier) {
erts_print(to, arg, "%ssco: %T\n", prefix, sco);
erts_print(to, arg, "%sscrpm: %T\n", prefix, scrpm);
- erts_print(to, arg, "%sscmgc: %beu\n", prefix, mmap_state.desc.reserved);
+ erts_print(to, arg, "%sscrfsd: %beu\n", prefix, mmap_state.desc.reserved);
}
}
@@ -2429,7 +2429,7 @@ Eterm erts_mmap_info_options(char *prefix,
res = NIL;
if (mmap_state.supercarrier) {
- add_2tup(hpp, szp, &res, am.scmgc,
+ add_2tup(hpp, szp, &res, am.scrfsd,
erts_bld_uint(hpp,szp, mmap_state.desc.reserved));
add_2tup(hpp, szp, &res, am.scrpm, scrpm);
add_2tup(hpp, szp, &res, am.sco, sco);
diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h
index e6934dbb26..778a8e0e80 100644
--- a/erts/emulator/sys/common/erl_mmap.h
+++ b/erts/emulator/sys/common/erl_mmap.h
@@ -45,8 +45,8 @@ typedef struct {
} predefined_area;
UWord scs; /* super carrier size */
int sco; /* super carrier only? */
- Uint scmgc; /* super carrier: max guaranteed (number of) carriers */
- int scrpm;
+ UWord scrfsd; /* super carrier reserved free segment descriptors */
+ int scrpm; /* super carrier reserve physical memory */
}ErtsMMapInit;
#define ERTS_MMAP_INIT_DEFAULT_INITER \
diff --git a/erts/emulator/test/alloc_SUITE.erl b/erts/emulator/test/alloc_SUITE.erl
index f6ff6bb813..cd2d043f7e 100644
--- a/erts/emulator/test/alloc_SUITE.erl
+++ b/erts/emulator/test/alloc_SUITE.erl
@@ -114,8 +114,8 @@ cpool(Cfg) -> ?line drv_case(Cfg).
erts_mmap(Config) when is_list(Config) ->
case {?t:os_type(), is_halfword_vm()} of
{{unix, _}, false} ->
- [erts_mmap_do(Config, SCO, SCRPM, SCMGC)
- || SCO <-[true,false], SCMGC <-[1234,0], SCRPM <- [true,false]];
+ [erts_mmap_do(Config, SCO, SCRPM, SCRFSD)
+ || SCO <-[true,false], SCRFSD <-[1234,0], SCRPM <- [true,false]];
{_,true} ->
{skipped, "No supercarrier support on halfword vm"};
@@ -126,14 +126,14 @@ erts_mmap(Config) when is_list(Config) ->
end.
-erts_mmap_do(Config, SCO, SCRPM, SCMGC) ->
+erts_mmap_do(Config, SCO, SCRPM, SCRFSD) ->
SCS = 100, % Mb
O1 = "+MMscs" ++ integer_to_list(SCS)
++ " +MMsco" ++ atom_to_list(SCO)
++ " +MMscrpm" ++ atom_to_list(SCRPM),
- Opts = case SCMGC of
+ Opts = case SCRFSD of
0 -> O1;
- _ -> O1 ++ " +MMscmgc"++integer_to_list(SCMGC)
+ _ -> O1 ++ " +MMscrfsd"++integer_to_list(SCRFSD)
end,
{ok, Node} = start_node(Config, Opts),
Self = self(),
@@ -148,7 +148,7 @@ erts_mmap_do(Config, SCO, SCRPM, SCMGC) ->
Total = SCS*1024*1024,
{reserved,Reserved} = lists:keyfind(reserved,1,Segs),
- true = (Reserved >= SCMGC),
+ true = (Reserved >= SCRFSD),
case {SCO,lists:keyfind(os,1,EM)} of
{true, false} -> ok;
diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index 6fd3dd83e2..f098e56a2e 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -112,7 +112,7 @@ static char *plusM_other_switches[] = {
"Mrmcbf",
"Mmcs",
"Mscs",
- "Mscmgc",
+ "Mscrfsd",
"Msco",
"Mscrpm",
"Ye",
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 16:30:30 +0000