43 lines
1.4 KiB
Diff
43 lines
1.4 KiB
Diff
From 104dc2e092058489a4be17d5b15902e58ca56804 Mon Sep 17 00:00:00 2001
|
|
From: d032747 <michael.trapp@sap.com>
|
|
Date: Fri, 22 Apr 2022 10:07:46 +0200
|
|
Subject: [PATCH 2/4] libuuid: improve cache handling
|
|
|
|
Short running applications with a few UUID request don't need
|
|
a large cache. Therefore increment the cache size over runtime.
|
|
---
|
|
libuuid/src/gen_uuid.c | 11 ++++++++++-
|
|
1 file changed, 10 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/libuuid/src/gen_uuid.c b/libuuid/src/gen_uuid.c
|
|
index 76d5371ea..805b40d90 100644
|
|
--- a/libuuid/src/gen_uuid.c
|
|
+++ b/libuuid/src/gen_uuid.c
|
|
@@ -443,6 +443,7 @@ int __uuid_generate_time(uuid_t out, int *num)
|
|
static int uuid_generate_time_generic(uuid_t out) {
|
|
#ifdef HAVE_TLS
|
|
THREAD_LOCAL int num = 0;
|
|
+ THREAD_LOCAL int cache_size = 1;
|
|
THREAD_LOCAL struct uuid uu;
|
|
THREAD_LOCAL time_t last_time = 0;
|
|
time_t now;
|
|
@@ -453,7 +454,15 @@ static int uuid_generate_time_generic(uuid_t out) {
|
|
num = 0;
|
|
}
|
|
if (num <= 0) {
|
|
- num = 1000000;
|
|
+ /*
|
|
+ * num + OP_BULK provides a local cache in each application.
|
|
+ * Start with a small cache size to cover short running applications
|
|
+ * and increment the cache size over the runntime.
|
|
+ */
|
|
+ if (cache_size < 1000000)
|
|
+ cache_size *= 10;
|
|
+ num = cache_size;
|
|
+
|
|
if (get_uuid_via_daemon(UUIDD_OP_BULK_TIME_UUID,
|
|
out, &num) == 0) {
|
|
last_time = time(NULL);
|
|
--
|
|
2.37.1
|
|
|