Make it easier to benchmark file sync performance by ignoring the file
system.
Bug: https://issuetracker.google.com/150827486
Test: test_device.py
Change-Id: Icfa4b28eb5206f1914c0c163833d070a3748c3ea
Add support for LZ4 compression, which compresses and decompresses far
more quickly than brotli, at the cost of worse compression ratio.
`adb sync -d system` speeds (in MB/s) on aosp_blueline-eng:
none brotli lz4
USB 3.0 120 110 190
USB 2.0 38 75 63
Bug: https://issuetracker.google.com/150827486
Test: python3 -m unittest test_device.FileOperationsTest{Uncompressed,Brotli,LZ4}
Change-Id: Ibef6ac15a76b4e5dcd02d7fb9433cbb1c02b8382
More groundwork to support more compression algorithms.
Bug: https://issuetracker.google.com/150827486
Test: python3 -m unittest test_device.FileOperationsTest{Uncompressed,Brotli}
Change-Id: I638493083b83e3f6c6854b631471e9d6b50bd79f
This improves performance when syncing by up to 2x (remote cuttlefish
goes from 11.9 MB/s to 21.3 MB/s, blueline over USB 2.0 from 36 MB/s
to 70 MB/s).
This results in a slight drop in push speeds over USB 3.0 (125 -> 115
MB/s on blueline), presumably because we're compressing and extracting
on only a single thread, but the gains over lower bandwidth transports
make this worth it to submit this now and parallelize later.
Bug: https://issuetracker.google.com/150827486
Test: ADB_COMPRESSION={0, 1} test_device.py (with new/old adbd)
Change-Id: Ic2a0c974f1b6efecda115f87d336e3caac810035
Make it so that we can get the sizeof a member of syncmsg without having
an instance of syncmsg or doing something awful along the lines of
sizeof(reinterpret_cast<syncmsg*>(nullptr)->status).
Test: m adb adbd
Change-Id: I4830e7f90033c7706ff52cdd8d13e9cf40c73628
Josh Gao