git credential-manager is very slow

[patryksuchowierski]

I'm experiencing delays when performing git operations. Any idea what is going on? I spent a lot of time on this, played with antivirus, firewall and so on - with no success.

19:19:41.362598 http.c:724              == Info: Connection #0 to host xxxx.visualstudio.com left intact
19:19:41.363597 run-command.c:637       trace: run_command: 'git credential-manager get'
19:20:08.287401 exec-cmd.c:236          trace: resolved executable dir: C:/Program Files/Git/mingw64/bin

19:21:01.117519 http.c:724              == Info: Connection #1 to host xxxx.visualstudio.com left intact
19:21:01.118506 run-command.c:637       trace: run_command: 'git credential-manager store'
19:22:12.622660 exec-cmd.c:236          trace: resolved executable dir: C:/Program Files/Git/mingw64/libexec/git-core

[jeschu1]

@patryksuchowierski can you confirm what version of GCM you are on?

[patryksuchowierski]

@patryksuchowierski can you confirm what version of GCM you are on?

1.18.1

[PaulDotNet]

Try nslookup xxxx.visualstudio.com command to see if you have a mix of IPv4 and IPv6 addresses.

If you do then you could have a usual case of bad routing.

[jeschu1]

@patryksuchowierski please try

Run fiddler and

1. set GCM_TRACE=1
2. rerun your command
   Then let us know where the slowdown appears to be. The fiddler trace will show you the network calls and capture the time spent there. If you don't see the full trace in fiddler you may need to run the command with (-c http.sslyVerify=false), but be aware what that flag does before running.

[jeschu1]

@patryksuchowierski please try the pre-release https://github.com/Microsoft/Git-Credential-Manager-for-Windows/releases/tag/v1.18.2 and let me know if it improves performance.

[patryksuchowierski]

@jeschu1 The problem does not seem to be occurring anymore (1.18.1). I have performed entire PC scan with my AV (McAffe) and then the delay was gone. Perhaps, it was the the cause? Maybe GCMW binaries were marked 'unscanned' by AV and each time GIT called them, it caused delays? Just guessing...

[jeschu1]

@patryksuchowierski thank you for the response! Yes, virus scanners will definitely cause delays. We have seen that before.

Note there was a speed regression in the last few versions of GCM, but only for non visualstudio.com users. I released 1.18.2 to address that on Friday,