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MINOR: config: implement global setting tune.buffers.reserve

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Used in conjunction with the dynamic buffer allocator.

tune.buffers.reserve <number>
  Sets the number of buffers which are pre-allocated and reserved for use only
  during memory shortage conditions resulting in failed memory allocations. The
  minimum value is 2 and is also the default. There is no reason a user would
  want to change this value, it's mostly aimed at haproxy core developers.
This commit is contained in:
Willy Tarreau 2014-12-23 22:40:40 +01:00
parent a24adf0795
commit 1058ae73f1
2 changed files with 16 additions and 0 deletions
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6
doc/configuration.txt
View File

@ -891,6 +891,12 @@ spread-checks <0..50, in percent>
and +/- 50%. A value between 2 and 5 seems to show good results. The
default value remains at 0.
tune.buffers.reserve <number>
Sets the number of buffers which are pre-allocated and reserved for use only
during memory shortage conditions resulting in failed memory allocations. The
minimum value is 2 and is also the default. There is no reason a user would
want to change this value, it's mostly aimed at haproxy core developers.
tune.bufsize <number>
Sets the buffer size to this size (in bytes). Lower values allow more
sessions to coexist in the same amount of RAM, and higher values allow some

10
src/cfgparse.c
View File

@ -696,6 +696,16 @@ int cfg_parse_global(const char *file, int linenum, char **args, int kwm)
}
}
#endif
else if (!strcmp(args[0], "tune.buffers.reserve")) {
if (*(args[1]) == 0) {
Alert("parsing [%s:%d] : '%s' expects an integer argument.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.tune.reserved_bufs = atol(args[1]);
if (global.tune.reserved_bufs < 2)
global.tune.reserved_bufs = 2;
}
else if (!strcmp(args[0], "tune.bufsize")) {
if (*(args[1]) == 0) {
Alert("parsing [%s:%d] : '%s' expects an integer argument.\n", file, linenum, args[0]);