Boost ustackframes_default.

The incidence of false positives in ustack scanning is quite high,
so a substantial number of frames are needed for quite short actual
call stacks in userspace.

So boost the default to 100 for now.

Signed-off-by: Nick Alcock <nick.alcock@oracle.com>

diff --git a/dtrace/dtrace_state.c b/dtrace/dtrace_state.c
index 11b83cd16997d2c8fa226da3274efcf4ec1e6c28..f79008ed4efa7aed33bb63dae7a019969652f08a 100644 (file)
--- a/dtrace/dtrace_state.c
+++ b/dtrace/dtrace_state.c
@@ -42,7 +42,7 @@ dtrace_optval_t               dtrace_specsize_default = 32 * 1024;
 dtrace_optval_t                dtrace_dstate_defsize = 1 * 1024 * 1024;
 size_t                 dtrace_strsize_default = 256;
 dtrace_optval_t                dtrace_stackframes_default = 20;
-dtrace_optval_t                dtrace_ustackframes_default = 20;
+dtrace_optval_t                dtrace_ustackframes_default = 100;
 dtrace_optval_t                dtrace_cleanrate_default = 9900990;
 dtrace_optval_t                dtrace_cleanrate_min = 20000;
 dtrace_optval_t                dtrace_cleanrate_max = (uint64_t)60 * NANOSEC;