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Remove the opt.lg_prof_tcmax option.

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Remove the opt.lg_prof_tcmax option and hard-code a cache size of 1024.
This setting is something that users just shouldn't have to worry about.
If lock contention actually ends up being a problem, the simple solution
available to the user is to reduce sampling frequency.
This commit is contained in:
Jason Evans
2012-02-13 18:04:26 -08:00
parent e7a1058aaa
commit 0b526ff94d
6 changed files with 8 additions and 50 deletions
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8
src/prof.c
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@@ -22,7 +22,6 @@ ssize_t opt_lg_prof_interval = LG_PROF_INTERVAL_DEFAULT;
bool opt_prof_gdump = false;
bool opt_prof_leak = false;
bool opt_prof_accum = true;
ssize_t opt_lg_prof_tcmax = LG_PROF_TCMAX_DEFAULT;
char opt_prof_prefix[PATH_MAX + 1];
uint64_t prof_interval;
@@ -519,8 +518,7 @@ prof_lookup(prof_bt_t *bt)
prof_leave();
/* Link a prof_thd_cnt_t into ctx for this thread. */
if (opt_lg_prof_tcmax >= 0 && ckh_count(&prof_tdata->bt2cnt)
== (ZU(1) << opt_lg_prof_tcmax)) {
if (ckh_count(&prof_tdata->bt2cnt) == PROF_TCMAX) {
assert(ckh_count(&prof_tdata->bt2cnt) > 0);
/*
* Flush the least recently used cnt in order to keep
@@ -535,9 +533,7 @@ prof_lookup(prof_bt_t *bt)
prof_ctx_merge(ret.p->ctx, ret.p);
/* ret can now be re-used. */
} else {
assert(opt_lg_prof_tcmax < 0 ||
ckh_count(&prof_tdata->bt2cnt) < (ZU(1) <<
opt_lg_prof_tcmax));
assert(ckh_count(&prof_tdata->bt2cnt) < PROF_TCMAX);
/* Allocate and partially initialize a new cnt. */
ret.v = imalloc(sizeof(prof_thr_cnt_t));
if (ret.p == NULL) {