On 9 Aug 2016, at 15:31, Stefan wrote:
Dear List,
with
SmartOS Live Image v0.147+ build: 20160428T170316Z
image: 2f56d126-20d0-11e5-9e5b-5f3ef6688aba (Debian 8)
That's debian-8 version 20150702, a KVM image.
the installation (particularly the unpacking) of gitlab
# curl
https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh
| bash
# apt-get install gitlab-ce
takes literally hours whereas installing under
d8d81aee-20cf-11e5-8503-2bc101a1d577 (Debian 7)
debian-7 version 20150702, also a KVM image
runs as fast as expected (< 5 minutes). We figured out that if the
software is installed on an ext4 fs without extents
# umount /data
# mkfs.ext4 -O^extents /dev/vdb1
# mount /data
# mkdir /data/opt
# mount --bind /data/opt /opt
(then continue as stated above)
the installation is as fast as under Debian 7. Any sugestions what
can be done about that issue?
There were quite a few changes from Debian 7 to Debian 8 (e.g the kernel
moving from 3.2 to 3.16)
See
http://arstechnica.com/information-technology/2015/05/debian-8-linuxs-most-reliable-distro-makes-its-biggest-change-since-1993/2/
where in the "Kernel" section it says:
"There's also been a ton of work put into filesystem improvements with
ext4 support getting a lot of attention "
Did any ext4 defaults change from Debian-7 to Debian-8?
If you have the resources, it may be worth checking to see if a similar
problem exists with Debian 8 on a standalone system (no SmartOS
involved) and also with the native SmartOS version e.g. SmartOS image
3da6330e-388d-11e6-b41b-d766707c6c3d - debian-8 version 20160622
Also see this thread "Debian 8.1 ext4 directory sizes", which reports
performance problems:
https://groups.google.com/forum/?_escaped_fragment_=topic/linux.debian.user/BxEKSHaCfQc#!topic/linux.debian.user/BxEKSHaCfQc
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