Re: [lmi] Migration to git

[Greg Chicares]

On 2016-05-22 20:45, Vadim Zeitlin wrote:
> On Sun, 22 May 2016 18:10:58 +0000 Greg Chicares <address@hidden> wrote:
[...]
> GC> I guess Kim, who doesn't commit anything, should do this:
> GC>   git clone git://git.savannah.nongnu.org/lmi.git
> GC> while you and I would use this instead:
> GC>   git clone <membername>@git.sv.gnu.org:/srv/git/lmi.git
> 
>  FWIW I tried cloning both and using git:// was noticeably (~20%) than
> using ssh:// protocol.

I tried each in its own freshly-created subdirectory, and saw
little difference. With fast hardware constrained by a slow
connection, I guess ssh consumes idle cycles rather than time.

Both protocols, GNU/Linux, two percent clock-time difference...

$time git clone git://git.savannah.nongnu.org/lmi.git
Cloning into 'lmi'...
remote: Counting objects: 32422, done.
remote: Compressing objects: 100% (6325/6325), done.
remote: Total 32422 (delta 26058), reused 32422 (delta 26058)
Receiving objects: 100% (32422/32422), 7.30 MiB | 620 KiB/s, done.
Resolving deltas: 100% (26058/26058), done.
git clone git://git.savannah.nongnu.org/lmi.git  4.04s user 0.25s system 25% 
cpu 17.062 total

$time git clone address@hidden:/srv/git/lmi.git
Cloning into 'lmi'...
remote: Counting objects: 32422, done.
remote: Compressing objects: 100% (6325/6325), done.
remote: Total 32422 (delta 26058), reused 32422 (delta 26058)
Receiving objects: 100% (32422/32422), 7.30 MiB | 620 KiB/s, done.
Resolving deltas: 100% (26058/26058), done.
git clone address@hidden:/srv/git/lmi.git  4.20s user 0.31s system 25% cpu 
17.417 total

Same, msw (cygwin), four-tenths of a percent clock-time difference...

/opt/lmi/src[0]$time git clone git://git.savannah.nongnu.org/lmi.git

Cloning into 'lmi'...

remote: Counting objects: 32422, done.

remote: Compressing objects: 100% (6325/6325), done.

remote: Total 32422 (delta 26058), reused 32422 (delta 26058)

Receiving objects: 100% (32422/32422), 7.30 MiB | 625.00 KiB/s, done.

Resolving deltas: 100% (26058/26058), done.

Checking connectivity... done.

git clone git://git.savannah.nongnu.org/lmi.git  10.34s user 34.40s system 99% 
cpu 44.984 total


$time git clone address@hidden:/srv/git/lmi.git

Cloning into 'lmi'...

remote: Counting objects: 32422, done.

remote: Compressing objects: 100% (6325/6325), done.

remote: Total 32422 (delta 26058), reused 32422 (delta 26058)

Receiving objects: 100% (32422/32422), 7.30 MiB | 624.00 KiB/s, done.

Resolving deltas: 100% (26058/26058), done.

Checking connectivity... done.

git clone address@hidden:/srv/git/lmi.git  10.23s user 32.89s system 96% cpu 
44.828 total