From: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Date: Fri, 03 Nov 2017 09:32:52 GMT
Subject: Re: "Cannot fetch git.git" (worktrees at fault? or origin/HEAD) ?
Message-ID: <0f1f8317-9d82-5e61-5332-f877ca886056@gmail.com>
In-Reply-To: <CAGZ79kYAn0Hi0qaG8P5zvVOFTsfXYrtvrR7oiT0KwwWeKLqZgw@mail.gmail.com>

On Monday 23 October 2017 11:07 PM, Stefan Beller wrote:
> Exactly. By memory I mean volatile RAM (as opposed to
> memory on a spinning disk).
> 
> Using GIT_TEST_OPTS has had some issues (I remember vaguely
> there was an inconsistency between the output of `make test` and prove),
> so I put my entire working tree on a tmpfs, I run roughly this script
> after booting my computer:
> 
>    sudo mount -t tmpfs -o size=16g tmpfs /u
>    mkdir /u/git
>    echo "gitdir:
> /usr/local/google/home/sbeller/OSS/git/.git/worktrees/git"
>> /u/git/.git
>    git -C /u/git checkout -f HEAD
> 
>    cat <<EOF >/u/config.mak
>    DEVELOPER=1
>    DEVELOPERS=1
>    CFLAGS += -g -O2
>    CFLAGS += -DFLEX_ARRAY=2048
>    #CFLAGS += -Wno-unused-value
>    EOF

Did I thank you for a good explanation? If not, thanks that was 
interesting and enlightening.

> The test suite (excluding t9*) runs in less than 50 seconds on the ram
> disk.
> 

BTW, this is what I call _way way_ faster. Unfortunately due to the 
limited configuration of my system, the test suite has following timing

     real    3m14.482s
     user    2m10.556s
     sys     1m12.328s

Anyways it's better than the timing I get for running it on a spinning 
disk which takes

     real    4m37.585s
     user    2m17.244s
     sys     1m37.136s

Thanks,
Kaartic