Re: Performance issue of 'git branch'

[Reece Dunn <msclrhd@googlemail.com>]

2009/7/25 Timo Hirvonen <tihirvon@gmail.com>:
> Linus Torvalds <torvalds@linux-foundation.org> wrote:
>
>> So curl really must die. It may not matter for the expensive operations,
>> but a lot of scripting is about running all those "cheap" things that just
>> add up over time.
>
> SELinux is the problem, not curl.
>
> On my Arch Linux machine:
>
>   $ ldd bin/git
>        linux-vdso.so.1 =>  (0x00007fff42306000)
>        libcurl.so.4 => /usr/lib/libcurl.so.4 (0x00007f8714532000)
>        libz.so.1 => /usr/lib/libz.so.1 (0x00007f871431d000)
>        libcrypto.so.0.9.8 => /usr/lib/libcrypto.so.0.9.8 (0x00007f8713f8f000)
>        libpthread.so.0 => /lib/libpthread.so.0 (0x00007f8713d74000)
>        libc.so.6 => /lib/libc.so.6 (0x00007f8713a21000)
>        librt.so.1 => /lib/librt.so.1 (0x00007f8713819000)
>        libssl.so.0.9.8 => /usr/lib/libssl.so.0.9.8 (0x00007f87135ca000)
>        libdl.so.2 => /lib/libdl.so.2 (0x00007f87133c6000)
>        /lib/ld-linux-x86-64.so.2 (0x00007f8714778000)

It will depend on the dependencies of curl that are applied. BLFS
(http://www.linuxfromscratch.org/blfs/view/stable/basicnet/curl.html)
list the following dependencies:

    pkg-config-0.22
    OpenSSL-0.9.8g  or GnuTLS-1.6.3
    OpenLDAP-2.3.39
    libidn-0.6.14
    MIT Kerberos V5-1.6 or Heimdal-1.1
    krb4
    SPNEGO
    c-ares

and the dependencies of those packages and so forth.

On Ubuntu 9.04, I get:

$ ldd /usr/bin/git
	linux-gate.so.1 =>  (0xb80ae000)
	libcurl-gnutls.so.4 => /usr/lib/libcurl-gnutls.so.4 (0xb805b000)
	libz.so.1 => /lib/libz.so.1 (0xb8045000)
	libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb802b000)
	libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7ec8000)
	libidn.so.11 => /usr/lib/libidn.so.11 (0xb7e95000)
	liblber-2.4.so.2 => /usr/lib/liblber-2.4.so.2 (0xb7e87000)
	libldap_r-2.4.so.2 => /usr/lib/libldap_r-2.4.so.2 (0xb7e43000)
	librt.so.1 => /lib/tls/i686/cmov/librt.so.1 (0xb7e39000)
	libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0xb7e0e000)
	libgnutls.so.26 => /usr/lib/libgnutls.so.26 (0xb7d71000)
	libtasn1.so.3 => /usr/lib/libtasn1.so.3 (0xb7d5f000)
	libgcrypt.so.11 => /lib/libgcrypt.so.11 (0xb7cf6000)
	/lib/ld-linux.so.2 (0xb80af000)
	libresolv.so.2 => /lib/tls/i686/cmov/libresolv.so.2 (0xb7ce0000)
	libsasl2.so.2 => /usr/lib/libsasl2.so.2 (0xb7cc7000)
	libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb7cc3000)
	libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0xb7c31000)
	libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0xb7c0d000)
	libcom_err.so.2 => /lib/libcom_err.so.2 (0xb7c09000)
	libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0xb7bff000)
	libkeyutils.so.1 => /lib/libkeyutils.so.1 (0xb7bfb000)
	libgpg-error.so.0 => /lib/libgpg-error.so.0 (0xb7bf7000)

- Reece