48e6d48cb9
Read ahead size should also be set as a configurable for low mem devices Test: th Change-Id: I4618249cb80021510a29cbc1b88bc27ff282c72c
66 lines
2.9 KiB
Makefile
66 lines
2.9 KiB
Makefile
#
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# Copyright (C) 2022 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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# This file enables baseline features, such as io_uring,
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# userspace merge, etc. But sets compression method to none.
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# This .mk file also removes snapuserd from vendor ramdisk,
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# as T launching devices will have init_boot which has snapuserd
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# in generic ramdisk.
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#
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# T and U launching devices should include this .mk file, and configure
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# compression algorithm by setting
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# PRODUCT_VIRTUAL_AB_COMPRESSION_METHOD to lz4, gz or brotli. Complete
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# set of supported algorithms can be found in
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# system/core/fs_mgr/libsnapshot/cow_writer.cpp
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PRODUCT_VIRTUAL_AB_OTA := true
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PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.enabled=true
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PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.compression.enabled=true
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PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.userspace.snapshots.enabled=true
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PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.io_uring.enabled=true
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PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.compression.xor.enabled=true
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PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.batch_writes=true
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# Low memory device configurations. If memory usage and cpu utilization is
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# a bottleneck during OTA, the below configurations can be added to a
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# device's .mk file improve performance for low mem devices. Disabling
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# ro.virtual_ab.compression.xor.enabled and ro.virtual_ab.io_uring.enabled
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# is also recommended
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#
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.read_ahead_size=16
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.o_direct.enabled=true
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.merge_thread_priority=19
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.worker_thread_priority=0
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.num_worker_threads=3
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.num_merge_threads=1
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.num_verify_threads=1
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.cow_op_merge_size=16
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.verify_threshold_size=1073741824
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.verify_block_size=1048576
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# Enabling this property, will improve OTA install time
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# but will use an additional CPU core
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# PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.compression.threads=true
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ifndef PRODUCT_VIRTUAL_AB_COMPRESSION_FACTOR
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PRODUCT_VIRTUAL_AB_COMPRESSION_FACTOR := 65536
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endif
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PRODUCT_VIRTUAL_AB_COMPRESSION := true
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PRODUCT_VIRTUAL_AB_COMPRESSION_METHOD ?= none
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PRODUCT_PACKAGES += \
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snapuserd \
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