Opened 10 years ago
Last modified 10 years ago
#34 closed defect
git: Support USE_CURL_MULTI — at Initial Version
| Reported by: | dmik | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | |
| Component: | Version: | ||
| Severity: | Keywords: | ||
| Cc: |
Description
After fixing #19 I found out that our git is very slow when cloning over HTTPS with USE_CURL_MULTI defined. This define is automatically enabled for all recent versions of CURL and causes git to use several HTTP streams for talking to the server (which in theory should improve the overall performance).
While working on #19 I disabled USE_CURL_MULTI to simplify debugging HTTP transfers. However, now, when I enabled it back, I noticed that the clone speed significantly decreased. For instance, cloning https://github.com/psmedley/gcc with *no* USE_CURL_MULTI gives us around 200 KiB/s second. When USE_CURL_MULTI is enabled, the speed drops to 25 KiB/s (i.e. almost 10 times slower). This is not acceptable.
I'm not 100% sure if it's a git or curl problem. At least, when I try to use CURL.EXE to directly download a ZIP from github it is as fast as it should be (around 200 KiB/s) but I'm not sure if CURL.EXE uses multiple streams internally or not (and there are no command line options to control this).
