Adb transfers file with a very slow speed

Question

I'm having a problem with adb on my machine, it runs on OSX Yosemite. I was trying to adb install a 44mb apk and it took 5 minutes for the apk to be installed. I try to narrow the problem, and it seems that the adb push has something to do with this.

I tested with adb push -p src dest to see the transfer progress. The transfer works fine for small files, leaving about 1300KB/s transfer rate. It slows down a lot when transferring large files, about 120KB/s transfer rate. The transfer always slows down at byte 8388608/total.

I've tested adb push with the same device and same USB cable at my coworker's Mac using OSX Yosemite and it works fine. I don't know what causes the problem, could somebody help me?

same here. In my case, it went fast, then stalled. I cancelled the transfer and restarted it and stated at slow speed from the very start. — netskink, Apr 25 '15 at 15:50

score 13 · Accepted Answer · answered Sep 03 '15 at 14:35

13

According to Performance Tuning the Network Stack on Mac OS X Part 2,
edit your /etc/sysctl.conf file as follows and reboot your machine.

kern.ipc.somaxconn=2048
net.inet.tcp.rfc1323=1
net.inet.tcp.win_scale_factor=4
net.inet.tcp.sendspace=1042560
net.inet.tcp.recvspace=1042560
net.inet.tcp.mssdflt=1448
net.inet.tcp.v6mssdflt=1412
net.inet.tcp.msl=15000
net.inet.tcp.always_keepalive=0
net.inet.tcp.delayed_ack=3
net.inet.tcp.slowstart_flightsize=20
net.inet.tcp.local_slowstart_flightsize=9
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.icmp.icmplim=50

I was faced with the same problem and solved it by the above settings.

answered Sep 03 '15 at 14:35

sumio

394
3
11

1

Thanks, pushing a 40mb file now takes only 30 seconds instead of 5 minutes. – esam091 Sep 07 '15 at 03:36
too bad this doesn't do anything on 10.12 – oarfish Nov 11 '17 at 20:14
1

Edit my `/etc/sysctl.conf` file of which device? The file does not exist both in my Mac and Android device. MacOS10.13.6 (17G65) / Android 6.0.1 – pea3nut Oct 26 '18 at 03:03
@pea3nut You can create the file in your Mac if it doesn't exist. Please see `man sysctl.conf`. – sumio Oct 30 '18 at 15:27

score 6 · Answer 2 · answered Dec 12 '16 at 04:31

I was struggling with this, then saw a suggestion to just start a webserver on the host machine and let your android device/emulator just download the apk.

cd build/outputs/apk/
python -m SimpleHTTPServer 8000

Then, in the android device I just open a browser to http://<host_ip>:8000/ - it downloads in seconds.

score 0 · Answer 3 · edited Dec 13 '19 at 07:28

0

Try use Wi-Fi. Probably, your USB cable is slow or your phone doesn't support fast high-speed file transfer. Look: How can I connect to Android with ADB over TCP?. I had 30-35 mbps, when I sent 2 GB of GTA SA.

If you don't have Wi-Fi, you can use Tethering from Android in computer.

edited Dec 13 '19 at 07:28

Harshvardhan Joshi

2,855
2
18
31

answered Jul 14 '15 at 13:35

barwnikk

950
8
14

I don't think the cable is the problem, because the same cables have been tested on another computer and they work just fine. Tried installing via Wi-Fi but it's awfully slow last time I tried, maybe I'll try using a different Wi-Fi network sometime. – esam091 Jul 14 '15 at 16:03

Adb transfers file with a very slow speed

3 Answers3

Linked