A slow parallel HTTP transfer of a large tar file between two machines ubuntu 20.04 server

Javad

1/20/23, 7:40 AM

I have 2 servers Ubuntu 20.04 server, running a service to transfer large tar files via HTTP (5 parallel) between server A to server B. Transfer rates sometimes dropped from x GiB/s to x MiB/s and a reboot was necessary to restore normal operation.

The network bandwidth is 25 GiB/s.

Normal State after reboot :

root@syd-7h1208-036:~# iperf3 -c xxx.xxx.6.50 
Connecting to host xxx.xxx.6.50, port 5201 
[  5] local xxx.xxx.6.91 port 39958 connected to xxx.xxx.6.50 port 5201 
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd 
[  5]   0.00-1.00   sec  1.98 GBytes  17.0 Gbits/sec    0   2.76 MBytes       
[  5]   1.00-2.00   sec  1.98 GBytes  17.0 Gbits/sec    0   2.76 MBytes       
[  5]   2.00-3.00   sec  1.97 GBytes  16.9 Gbits/sec    0   2.76 MBytes       
[  5]   3.00-4.00   sec  1.98 GBytes  17.0 Gbits/sec    0   2.76 MBytes       
[  5]   4.00-5.00   sec  1.98 GBytes  17.0 Gbits/sec    0   2.76 MBytes

Slow State before reboot :

root@syd-7h1208-036:~# iperf3 -c xxx.xxx.6.50 
Connecting to host xxx.xxx.6.50, port 5201 
[  5] local xxx.xxx.6.91 port 39958 connected to xxx.xxx.6.50 port 5201 
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd 
[  5]   0.00-1.11   sec  20.2 MBytes   153 Mbits/sec    4    332 KBytes       
[  5]   1.11-2.02   sec  31.8 MBytes   291 Mbits/sec    0    516 KBytes       
[  5]   2.02-3.00   sec  11.8 MBytes   101 Mbits/sec    0    568 KBytes       
[  5]   3.00-4.14   sec  27.5 MBytes   203 Mbits/sec    0    717 KBytes

0 + 0

server

networking

20.04

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: A slow parallel HTTP transfer of a large tar file between two machines ubuntu 20.04 server

TH: การถ่ายโอน HTTP แบบขนานที่ช้าของไฟล์ tar ขนาดใหญ่ระหว่างสองเครื่องเซิร์ฟเวอร์ Ubuntu 20.04

RO: Un transfer HTTP paralel lent al unui fișier tar mare între două mașini server ubuntu 20.04

RU: Медленная параллельная HTTP-передача большого файла tar между двумя машинами сервер ubuntu 20.04

VI: Truyền HTTP song song chậm của một tệp tar lớn giữa hai máy trên máy chủ Ubuntu 20.04

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