Periodic freezes

[anta999]

Environment

• **OS:**Debian testing
• Scrcpy version: last from github
• Installation method: manual build
• Device model: XIAOMI POCO X3
• Android version: 13

Describe the bug

There are periodic freezes for a long time, and quite often. This is very annoying. It unfreezes in about 10-15 seconds or the connection drops

INFO: ADB device found:
INFO:     --> (tcpip)  192.168.0.76:5555               device  M2102J20SG
INFO: Device already connected via TCP/IP: 192.168.0.76:5555
/usr/local/share/scrcpy/scrcpy-server: 1 file pushed, 0 skipped. 174.7 MB/s (90224 bytes in 0.000s)
[server] INFO: Device: [Xiaomi] POCO M2102J20SG (Android 13)
INFO: Renderer: opengl
INFO: OpenGL version: 4.6.0 NVIDIA 560.35.03
INFO: Trilinear filtering enabled
INFO: Texture: 1080x2400
INFO: Device clipboard copied

[rom1v]

Does it happen over USB?

Probably the "expected" head-of-line blocking of TCP, when network packets are lost. Over TCP/IP, try to reduce the bit rate:

scrcpy -m1024 -b 4M

[anta999]

Does it happen over USB?

Probably the "expected" head-of-line blocking of TCP, when network packets are lost. Over TCP/IP, try to reduce the bit rate:

scrcpy -m1024 -b 4M

It has become better - thanks.

[anta999]

As soon as there is not enough bandwidth, it freezes and takes a very long time to recover. Is there such a problem?

[rom1v]

Over wifi, this is expected: https://en.wikipedia.org/wiki/Head-of-line_blocking

Scrcpy just transmits the whole stream over TCP over adb, it never attempts to drop network packets. It is designed to work locally over USB, the wireless mode is just a by-product of using adb, but scrcpy is not tailored for this use case. It assumes the connection is reliable.

[anta999]

Over wifi, this is expected: https://en.wikipedia.org/wiki/Head-of-line_blocking

Scrcpy just transmits the whole stream over TCP over adb, it never attempts to drop network packets. It is designed to work locally over USB, the wireless mode is just a by-product of using adb, but scrcpy is not tailored for this use case. It assumes the connection is reliable.

Got it.