I have a server running Debian 11 with two 1Gbps and 10Gbps uplinks respectively. When running any network related commands, I observe a very high latency at the beginning of the command execution.
For example, if I run the command
curl -I google.com, it hangs for a couple of seconds and then outputs the result:
$ curl -I google.com *** hangs for about 5 seconds *** HTTP/1.1 301 Moved Permanently Location: http://www.google.com/ Content-Type: text/html; charset=UTF-8 Date: Wed, 13 Apr 2022 16:20:09 GMT Expires: Fri, 13 May 2022 16:20:09 GMT Cache-Control: public, max-age=2592000 Server: gws Content-Length: 219 X-XSS-Protection: 0 X-Frame-Options: SAMEORIGIN
There is a similar problem for
$ sudo apt update 0% [Working] # <--- hangs for 2-3 seconds Hit:1 https://mirror.yandex.ru/debian bullseye InRelease ...
At the same time, the speed of the Internet connection is acceptable:
$ wget http://tb.ip4market.ru/file1gb.bin --2022-04-13 19:11:28-- http://tb.ip4market.ru/file1gb.bin Resolving tb.ip4market.ru (tb.ip4market.ru)... 126.96.36.199 Connecting to tb.ip4market.ru (tb.ip4market.ru)|188.8.131.52|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 1073741824 (1.0G) [application/octet-stream] Saving to: ‘file1gb.bin’ file1gb.bin 100%[==================================>] 1.00G 17.0MB/s in 49s 2022-04-13 19:12:22 (21.1 MB/s) - ‘file1gb.bin’ saved [1073741824/1073741824]
On other servers connected to the same switch, there is no such problem.
How can this be fixed, or at least how to determine the cause of this strange behavior?
Thanks in advance.