53-ec2-read-ahead-kb.rules

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the MIT License. See the LICENSE accompanying this file
# for the specific language governing permissions and limitations under
# the License.


# increase read_ahead_kb when a nfs/efs export is mounted to improve throughput 
SUBSYSTEM=="bdi", ACTION=="add", PROGRAM="/bin/awk -v bdi=$kernel 'BEGIN{ret=1} {if ($$4 == bdi) {ret=0}} END{exit ret}' /proc/fs/nfsfs/volumes", ATTR{read_ahead_kb}="15360"