vsock is a socket address family for communicating into and out of
virtual machines. Addresses have a port and CID. The CID is unique to
each virtual machine on the computer. The VM host always has CID 2.
http://man7.org/linux/man-pages/man7/vsock.7.html
Inside the android guest, the adb daemon hosts a vsock server with
VMADDR_CID_ANY, automatically using the guest CID. The adb server
can now connect to addresses of the form vsock:cid:port, where the CID
must be specified and the port defaults to 5555.
This is a significant speed improvement for ADB connections in
Cuttlefish, with 150-200 MB/s for `adb push` and 100-150 MB/s for
`adb pull`. It also allows removing some proxying steps from Cuttlefish,
simplifying the full connection path, and removes a dependency on the
unstable ivshmem protocol.
Commands tested against a Cuttlefish VM with CID 3:
adb connect vsock:3:5555
adb -s vsock:3:5555 shell
adb disconnect vsock:3:5555
Supporting "adb disconnect" and "adb -s" required modifying some of the
parts that parse addresses / serials.
push/pull trials with native adb vsock support in cuttlefish:
100m: 1 file pushed. 297.6 MB/s (104857600 bytes in 0.336s)
100m: 1 file pushed. 270.3 MB/s (104857600 bytes in 0.370s)
100m: 1 file pushed. 271.7 MB/s (104857600 bytes in 0.368s)
100m: 1 file pushed. 250.5 MB/s (104857600 bytes in 0.399s)
100m: 1 file pushed. 277.1 MB/s (104857600 bytes in 0.361s)
100m: 1 file pushed. 263.5 MB/s (104857600 bytes in 0.379s)
100m: 1 file pushed. 242.6 MB/s (104857600 bytes in 0.412s)
100m: 1 file pushed. 271.8 MB/s (104857600 bytes in 0.368s)
100m: 1 file pushed. 267.1 MB/s (104857600 bytes in 0.374s)
/data/local/tmp/100m: 1 file pulled. 212.8 MB/s (104857600 bytes in 0.470s)
/data/local/tmp/100m: 1 file pulled. 236.7 MB/s (104857600 bytes in 0.423s)
/data/local/tmp/100m: 1 file pulled. 201.2 MB/s (104857600 bytes in 0.497s)
/data/local/tmp/100m: 1 file pulled. 255.6 MB/s (104857600 bytes in 0.391s)
/data/local/tmp/100m: 1 file pulled. 199.6 MB/s (104857600 bytes in 0.501s)
/data/local/tmp/100m: 1 file pulled. 214.6 MB/s (104857600 bytes in 0.466s)
/data/local/tmp/100m: 1 file pulled. 254.2 MB/s (104857600 bytes in 0.393s)
/data/local/tmp/100m: 1 file pulled. 212.5 MB/s (104857600 bytes in 0.471s)
/data/local/tmp/100m: 1 file pulled. 218.9 MB/s (104857600 bytes in 0.457s)
/data/local/tmp/100m: 1 file pulled. 223.6 MB/s (104857600 bytes in 0.447s)
Bug: 121166534
Change-Id: I50f21fb5c9acafb8daa789df4e28c9e1bbbbf2ef
Test: adb connect/shell/disconnect
Since we are moving the fstab from DT into the ramdisk fstab, the
logging from ReadFstabFromDt when reading the default fstab is
turning into logging noise.
Test: compile
Bug: 122602260
Change-Id: Icba0962c13d701afce2dc7c4f23712dd47ea0100
* changes:
DO NOT MERGE: Revert "Revert "Add dependencies on libprocessgroup for sched_policy users""
DO NOT MERGE: Revert "Revert "libcutils: Move sched_policy functions into libprocessgroup""
DO NOT MERGE: Revert "Revert "Add libprocessgroup into VNDK""
This reverts commit 1bef8c550c.
Reason for revert: AOSP is fixed with new vendor image
Change-Id: Ib341ac80e2f88c13a7815a490ea2d9422ebdf55f
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
This reverts commit b5394db682.
Reason for revert: AOSP is fixed with new vendor image
Change-Id: Ie1a2e0200600214a65f4fe2250c903c8e8ce0a29
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
This reverts commit c4a02d25a9.
Reason for revert: AOSP is fixed with new vendor image
Change-Id: Ifc1c4d51aa1b168ef62cf58275b908d98b9a04bf
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
