On 4 July 2011 08:10, Linda Walsh
Per Jessen wrote:
Rob OpenSuSE wrote:
In old days, it would take ages for an array of disks to spin up,
Staggered spin-up is still the norm.
--- I have 24 external and 8 internal RAID disks (3 are 15K SAS, the rest are 2TB SATA), ...
My init-d start takes all of 20 seconds -- that's with all disks mounted and my disks are set for auto-spinup -- but that happens during BIOS initialization and adds no noticeable time over an empty controller.... So...it is only a 2.6MHz CPU (2x4core), so it's NOT because it's a fast CPU...
What benefit is systemd going to give me that will be worth _any_ hassles.
As https://features.opensuse.org/310327 says, "systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux cgroups, supports snapshotting and restoring of the system state, maintains mount and automount points and implements an elaborate transactional dependency-based service control logic." Apart from that, it means openSUSE project share code with other distro's rather than maintaining own parrelised Sys V Init. Upgrading a distro release, will always bring "hassles", it's a trade off on the benefits. Big Iron deployments do not have a hope in hell, of holding back a community distro, the on-demand demon starting helps many by saving memory on startup & avoiding need to disable unused daemons, lowering maintenance & support issues. FWIW Sys V init was new at one time, and WE hated it, as it was slow & over engineered, I remember it taking minutes to change run levels, when "simply using rc.local" was so much simpler & faster and what did we need all that start/stop crapola when we could just SIGHUP the daemon or kill it ourselves. Things change.. Rob -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-factory+help@opensuse.org