1a9cad816d
Make the queue depth of loop devices identical to that of the underlying storage device. This patch reduces latency by lowering the queue depth. With this patch applied I see the following: # cat /sys/block/loop30/queue/nr_requests 32 Bug: 194450129 Test: Built Android images, installed these and verified that the queue depth of loop devices is 32 instead of 256. Merged-In: Ifa16084c7df3a54d9559c2388abc4a8392ff88c6 Change-Id: Icc89e1f88d2f0ade2805999afef556b15b7ff8eb Ignore-AOSP-First: Already in AOSP. Signed-off-by: Bart Van Assche <bvanassche@google.com>
21 lines
837 B
C++
21 lines
837 B
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <android-base/result.h>
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#include <string>
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android::base::Result<void> ConfigureQueueDepth(const std::string& loop_device_path,
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const std::string& file_path);
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