test: reduce number of threads to 32 in LibCephFS.ShutdownRace

We're still occasionally hitting file descriptor limits when running
this test. Reduce the thread count to 32 for now, since it was possible
to reproduce the original problem with 10 or so threads.

Fixes: https://tracker.ceph.com/issues/49559
Signed-off-by: Jeff Layton <jlayton@redhat.com>
(cherry picked from commit 5aec283a1c33b6c21f877a27f57a1bc03b4894a0)

diff --git a/src/test/libcephfs/test.cc b/src/test/libcephfs/test.cc
index e74e99740979423051760268f1641f8a6cfc1e61..8d37754bc7d8e9355fda2c1313f21d36d7ee1e0a 100644 (file)
--- a/src/test/libcephfs/test.cc
+++ b/src/test/libcephfs/test.cc
@@ -2028,7 +2028,7 @@ static void shutdown_racer_func()
 // See tracker #20988
 TEST(LibCephFS, ShutdownRace)
 {
-  const int nthreads = 128;
+  const int nthreads = 32;
   std::thread threads[nthreads];
 
   // Need a bunch of fd's for this test