Hi,
I've been running lubuntu 16.04 with lxde for quite some time on a bunch of
desktops and been very happy with it. Yesterday we finally moved the
desktops to centralized homes/accounts and users began noticing a weird
behavior: logins would take up to 10 seconds during which the screen would
be completely black.
Eventually I put a strace on lxsession and confirmed that regardless of the
account being local or remote, lxsession makes some crazy number of
copy/renames of desktop.conf. I tried to look at the code, but couldn't
figure out where that was happening or why. On a local home that's not
really noticeable, but on NFS that amounts to almost 10 secs.
Here's a strace output sample tracking file syscalls:
07:05:20.000893
access("/home/administrator/.config/lxsession/Lubuntu/desktop.conf", F_OK)
= 0
07:05:20.000993
open("/home/administrator/.config/lxsession/Lubuntu/desktop.conf",
O_RDONLY) = 8
07:05:20.001355
open("/home/administrator/.config/lxsession/Lubuntu/desktop.conf.NSJ1NY",
O_RDWR|O_CREAT|O_EXCL, 0666) = 8
07:05:20.001494
lstat("/home/administrator/.config/lxsession/Lubuntu/desktop.conf",
{st_mode=S_IFREG|0664, st_size=2302, ...}) = 0
07:05:20.002867
rename("/home/administrator/.config/lxsession/Lubuntu/desktop.conf.NSJ1NY",
"/home/administrator/.config/lxsession/Lubuntu/desktop.conf") = 0
07:05:20.003075
open("/home/administrator/.config/lxsession/Lubuntu/desktop.conf.JVK1NY",
O_RDWR|O_CREAT|O_EXCL, 0666) = 8
07:05:20.003191
lstat("/home/administrator/.config/lxsession/Lubuntu/desktop.conf",
{st_mode=S_IFREG|0664, st_size=2302, ...}) = 0
07:05:20.003997
rename("/home/administrator/.config/lxsession/Lubuntu/desktop.conf.JVK1NY",
"/home/administrator/.config/lxsession/Lubuntu/desktop.conf") = 0
grep desktop.conf lxsession.trace.6624 | wc -l
260
Yes, 260. That's how crazy it is. The pattern is always the same, there's
an lstat for .config/lxsession/Lubuntu/desktop.conf followed by a rename to
finish with an open.
I can't imagine this being the desired behavior and would appreciate some
help resolving it. I've tried to remove and prepopulate the file myself and
it makes no difference, it goes through that dance regardless.
any thoughts?
thank you in advance,
Spike
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