On 08/04/17 11:26, Patrick O'Callaghan wrote:
On Sat, 2017-04-08 at 08:06 +0100, Terry Barnaby wrote:
On a laptop I have, a Thinkpad T410, i5 4 core 2.6GHz, 4G RAM, Spinning
1 TByte 7200rpm disk (110 MBytes/s sequential reed speed) I get the
following rough figures:
Windows7 to login screen: 24s
Windows7 from login screen to desktop: 10s
Windows7 overall: 34s
Fedora25/KDE to login screen: 50s (1:46 when updatedb runs)
Fedora25/KDE from login screen to desktop: 50s
Fedora25/KDE overall: 1:40 (-> 2:36 when updatedb is running)
I get similar but slightly faster speeds on desktop i5 systems, again
with spinning disks. SSD systems I have are faster (It does seem to be
disk bound) but still not that quick.
It is starting to get noticeable/an issue these days and getting
embarrassing when going to meetings with a Linux Laptop !
On my i7 desktop (booting from SSD) it's typically under 10 seconds
from BIOS to login screen.
Maybe try "systemd-analyze --blame".
poc
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With a 50s boot to login screen that gives:
Startup finished in 2.069s (kernel) + 3.395s (initrd) + 25.451s
(userspace) = 30.915s
12.391s systemd-journal-flush.service
8.049s lvm2-monitor.service
7.862s systemd-udev-settle.service
7.502s dev-sda5.device
6.231s packagekit.service
5.528s abrtd.service
5.030s accounts-daemon.service
4.937s boapns.service
4.245s NetworkManager.service
2.751s systemd-logind.service
...
I don't think there are any issues with this particular laptop. All of
my other 10+ Fedora25 KDE/Plasma5 systems are basically the same, slow
to get to a logged in condition these days.
It just appears that Fedora Linux and particularly the KDE/Plasma
software is getting grossly inefficient and requires more and more
random disk accesses than before. I guess SSD's are covering this up to
a fair extent, but with rotating disk file systems and network files
systems this doesn't seem good to me.
I just wonder if this is inherent with the KDE/Plasma5 architecture
(such as a lot of use of QtQuick with small interpreted files being used
etc.) or something that could get better as KDE/Plasma is developed.
Terry
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