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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
commit | 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch) | |
tree | e5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /qa/tasks/cephfs/test_readahead.py | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'qa/tasks/cephfs/test_readahead.py')
-rw-r--r-- | qa/tasks/cephfs/test_readahead.py | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/qa/tasks/cephfs/test_readahead.py b/qa/tasks/cephfs/test_readahead.py new file mode 100644 index 00000000..31e7bf18 --- /dev/null +++ b/qa/tasks/cephfs/test_readahead.py @@ -0,0 +1,31 @@ +import logging +from tasks.cephfs.fuse_mount import FuseMount +from tasks.cephfs.cephfs_test_case import CephFSTestCase + +log = logging.getLogger(__name__) + + +class TestReadahead(CephFSTestCase): + def test_flush(self): + if not isinstance(self.mount_a, FuseMount): + self.skipTest("FUSE needed for measuring op counts") + + # Create 32MB file + self.mount_a.run_shell(["dd", "if=/dev/urandom", "of=foo", "bs=1M", "count=32"]) + + # Unmount and remount the client to flush cache + self.mount_a.umount_wait() + self.mount_a.mount() + self.mount_a.wait_until_mounted() + + initial_op_r = self.mount_a.admin_socket(['perf', 'dump', 'objecter'])['objecter']['op_r'] + self.mount_a.run_shell(["dd", "if=foo", "of=/dev/null", "bs=128k", "count=32"]) + op_r = self.mount_a.admin_socket(['perf', 'dump', 'objecter'])['objecter']['op_r'] + assert op_r >= initial_op_r + op_r -= initial_op_r + log.info("read operations: {0}".format(op_r)) + + # with exponentially increasing readahead, we should see fewer than 10 operations + # but this test simply checks if the client is doing a remote read for each local read + if op_r >= 32: + raise RuntimeError("readahead not working") |