From: Frank Ch. Eigler <fche@redhat.com>
Date: Fri, 13 Nov 2020 17:36:07 +0000 (-0500)
Subject: RHBZ1892179: double default UTRACE_TASK_WORKPOOL
X-Git-Tag: release-4.5~151
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=83cb271b390a1b36abd4c3aa69f89c466e99e253;p=systemtap.git

RHBZ1892179: double default UTRACE_TASK_WORKPOOL

Some workloads were observed to exhaust the previous limit of 288.
---

diff --git a/runtime/stp_utrace.c b/runtime/stp_utrace.c
index 46ba48923..6022267fa 100644
--- a/runtime/stp_utrace.c
+++ b/runtime/stp_utrace.c
@@ -141,7 +141,7 @@ struct __stp_utrace_task_work { /* NB: about 216 bytes, 18 per page: */
    TODO: UTRACE_TASK_WORK_POOL_SIZE can be specified on the Systemtap
    command line. Experiment to find the best default value. */
 #ifndef UTRACE_TASK_WORK_POOL_SIZE
-#define UTRACE_TASK_WORK_POOL_SIZE 288
+#define UTRACE_TASK_WORK_POOL_SIZE 576
 #endif
 static DECLARE_BITMAP(__stp_utrace_task_work_pool_bitmap, UTRACE_TASK_WORK_POOL_SIZE);
 static struct __stp_utrace_task_work __stp_utrace_task_work_pool[UTRACE_TASK_WORK_POOL_SIZE];