Double the number of threadpool threads

Introduce this temporary workaround to reduce the impact of long-running
tasks in offload threads which can block the resolution of queries.

diff --git a/lib/isc/loop.c b/lib/isc/loop.c
index 8f2fcdf8e831342be620e312f87cba9a35fc3c01..2ca6f58014d301677a9670b495d87e9f2d88e768 100644 (file)
--- a/lib/isc/loop.c
+++ b/lib/isc/loop.c
@@ -308,7 +308,10 @@ threadpool_initialize(uint32_t workers) {
        int r = uv_os_getenv("UV_THREADPOOL_SIZE", buf,
                             &(size_t){ sizeof(buf) });
        if (r == UV_ENOENT) {
-               snprintf(buf, sizeof(buf), "%" PRIu32, workers);
+               /* FIXME The number of threadpool threads has been temporarily
+                * doubled to work around the issue [GL #4898] until a proper
+                * solution is implemented. */
+               snprintf(buf, sizeof(buf), "%" PRIu32, 2 * workers);
                uv_os_setenv("UV_THREADPOOL_SIZE", buf);
        }
 }