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From: John Hubbard <jhubbard@nvidia.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Shuah Khan" <shuah@kernel.org>,
	"Mike Rapoport" <rppt@linux.vnet.ibm.com>,
	"Ralph Campbell" <rcampbell@nvidia.com>,
	"Jérôme Glisse" <jglisse@redhat.com>,
	"Jonathan Corbet" <corbet@lwn.net>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
	"John Hubbard" <jhubbard@nvidia.com>
Subject: [PATCH v3 9/9] selftests/vm: 2x speedup for run_vmtests.sh
Date: Sun, 25 Oct 2020 23:40:21 -0700	[thread overview]
Message-ID: <20201026064021.3545418-10-jhubbard@nvidia.com> (raw)
In-Reply-To: <20201026064021.3545418-1-jhubbard@nvidia.com>

Each invocation of userfaultfd for "anon" and "shmem" was taking about
6.5 sec to run, contributing to an overall run time of about 22 sec for
run_vmtests.sh.

Reduce the size and bounce input values to the userfaultfd invocation
within run_vmtests.sh, enough to get each invocation down to about 1.0
sec. This should still provide a reasonable smoke test, while staying
within a nominal time budget of around 1 second or so per test. And this
brings the overall running time of run_vmtests.sh down to 11 second.

Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 tools/testing/selftests/vm/run_vmtests.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/vm/run_vmtests.sh b/tools/testing/selftests/vm/run_vmtests.sh
index 4ac84b350d9f..9e8837768ee2 100755
--- a/tools/testing/selftests/vm/run_vmtests.sh
+++ b/tools/testing/selftests/vm/run_vmtests.sh
@@ -160,7 +160,7 @@ fi
 echo "-------------------"
 echo "running userfaultfd"
 echo "-------------------"
-./userfaultfd anon 128 32
+./userfaultfd anon 20 16
 if [ $? -ne 0 ]; then
 	echo "[FAIL]"
 	exitcode=1
@@ -185,7 +185,7 @@ rm -f $mnt/ufd_test_file
 echo "-------------------------"
 echo "running userfaultfd_shmem"
 echo "-------------------------"
-./userfaultfd shmem 128 32
+./userfaultfd shmem 20 16
 if [ $? -ne 0 ]; then
 	echo "[FAIL]"
 	exitcode=1
-- 
2.29.0


      parent reply	other threads:[~2020-10-26  6:41 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-26  6:40 [PATCH v3 0/9] selftests/vm: gup_test, hmm-tests, assorted improvements John Hubbard
2020-10-26  6:40 ` [PATCH v3 1/9] mm/gup_benchmark: rename to mm/gup_test John Hubbard
2020-10-26  6:40 ` [PATCH v3 2/9] selftests/vm: use a common gup_test.h John Hubbard
2020-10-26  6:40 ` [PATCH v3 3/9] selftests/vm: rename run_vmtests --> run_vmtests.sh John Hubbard
2020-10-26  6:40 ` [PATCH v3 4/9] selftests/vm: minor cleanup: Makefile and gup_test.c John Hubbard
2020-10-26  6:40 ` [PATCH v3 5/9] selftests/vm: only some gup_test items are really benchmarks John Hubbard
2020-10-26  6:40 ` [PATCH v3 6/9] selftests/vm: gup_test: introduce the dump_pages() sub-test John Hubbard
2020-10-26  6:40 ` [PATCH v3 7/9] selftests/vm: run_vmtests.sh: update and clean up gup_test invocation John Hubbard
2020-10-26  6:40 ` [PATCH v3 8/9] selftests/vm: hmm-tests: remove the libhugetlbfs dependency John Hubbard
2020-10-26  6:40 ` John Hubbard [this message]

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