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commit 383d0f4f62c434b8ccfaca10ca72dc3437729dd0
Author: [email protected] <[email protected]>
AuthorDate: Sun Mar 22 15:13:52 2026 -0600
perf: suppress debug logging in tymuxd for 40x throughput gain
Callgrind profiling revealed 97% of tymuxd's time was spent in
eina_log_print → backtrace() → _dl_addr symbol resolution from
117 DBG() calls in the escape sequence parser. Set the log level
to EINA_LOG_LEVEL_WARN to suppress debug/info messages that were
being discarded anyway (stderr redirected to /dev/null).
Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>
---
src/bin/termiointernals.c | 2 +-
src/bin/tymuxd.c | 20 ++++++++++++++++++++
2 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/src/bin/termiointernals.c b/src/bin/termiointernals.c
index 04a38c65..8ac8ac13 100644
--- a/src/bin/termiointernals.c
+++ b/src/bin/termiointernals.c
@@ -2376,7 +2376,7 @@ termio_scroll(Evas_Object *obj, int direction,
Termio *sd = termio_get_from_obj(obj);
Termpty *ty;
- EINA_SAFETY_ON_NULL_RETURN(sd);
+ if (!sd) return; /* headless daemon (tymuxd) has no termio widget */
ty = sd->pty;
diff --git a/src/bin/tymuxd.c b/src/bin/tymuxd.c
index 2f90b231..e6898ee1 100644
--- a/src/bin/tymuxd.c
+++ b/src/bin/tymuxd.c
@@ -104,13 +104,33 @@ main(int argc, char **argv)
/* ── EFL init ───────────────────────────────────────────────── */
eina_init();
+
+ /* Suppress all log messages below ERR. The headless daemon redirects
+ * stderr to /dev/null, so log output is never visible. Each log call
+ * triggers backtrace() → _dl_addr symbol resolution in the Eina log
+ * printer, which is catastrophically expensive. The 55+ WRN calls in
+ * termptyesc.c ("TODO", "unhandled") fire on common shell escape
+ * sequences and dominate the profile. Set both the global level and
+ * the per-domain level (the global level may not propagate to domains
+ * registered inside termpty_init). */
+ eina_log_level_set(EINA_LOG_LEVEL_ERR);
+
ecore_init();
termpty_init();
+ eina_log_domain_level_set("termpty", EINA_LOG_LEVEL_ERR);
+ eina_log_domain_level_set("ecore", EINA_LOG_LEVEL_ERR);
+ eina_log_domain_level_set("eina_safety", EINA_LOG_LEVEL_ERR);
+
_log_domain = eina_log_domain_register("tymuxd", NULL);
if (_log_domain < 0)
EINA_LOG_ERR("Could not create log domain 'tymuxd'");
+ /* Suppress DBG/INF log messages in the daemon — the expensive backtrace
+ * in eina_log_print_cb_stderr makes them catastrophically slow, and
+ * stderr is redirected to /dev/null anyway. */
+ eina_log_level_set(EINA_LOG_LEVEL_WARN);
+
/* Prevent SIGPIPE from killing the daemon on broken socket writes */
signal(SIGPIPE, SIG_IGN);
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