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Disable interval-based profile dumps by default.

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It is common to have to specify something like JEMALLOC_OPTIONS=F31i,
because interval-based dumps are often unuseful or too expensive.
Therefore, disable interval-based dumps by default.  To get the previous
default behavior it is now necessary to specify 31I as part of the
options.
This commit is contained in:
Jason Evans 2010-09-30 17:10:17 -07:00
parent 6005f0710c
commit 37dab02e52
2 changed files with 8 additions and 4 deletions
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10
jemalloc/doc/jemalloc.3.in
View File

@ -526,9 +526,13 @@ will disable dirty page purging.
@roff_prof@is controlled by the
@roff_prof@JEMALLOC_PROF_PREFIX
@roff_prof@environment variable.
@roff_prof@The default average interval is 1 GiB;
@roff_prof@.Ev JEMALLOC_OPTIONS=31i
@roff_prof@will disable interval-triggered profile dumping.
@roff_prof@By default, interval-triggered profile dumping is disabled.
@roff_prof@This is internally encoded as (1 << -1), and each
@roff_prof@.Dq I
@roff_prof@that is specified increments the shift amount.
@roff_prof@Therefore, e.g.
@roff_prof@.Ev JEMALLOC_OPTIONS=31I
@roff_prof@specifies a dump interval of 1 GiB.
@roff_fill@.It J
@roff_fill@Each byte of new memory allocated by
@roff_fill@.Fn @jemalloc_prefix@malloc

2
jemalloc/include/jemalloc/internal/prof.h
View File

@ -11,7 +11,7 @@ typedef struct prof_s prof_t;
/* Option defaults. */
#define LG_PROF_BT_MAX_DEFAULT 2
#define LG_PROF_SAMPLE_DEFAULT 0
#define LG_PROF_INTERVAL_DEFAULT 30
#define LG_PROF_INTERVAL_DEFAULT -1
/*
* Hard limit on stack backtrace depth. Note that the version of