2011/7/6 Άλκης Γεωργόπουλος <[email protected]>:
> Ubuntu/LTSP disables a lot of needed services by default for
> both thin and fat clients, I've filed a bug about this in
> https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/694066
> Apart from the governor, that probably includes the CUPS service
> as well, see if that's what's causing your printer-related issues.
I'm not sure I understand what that file is doing, but I edited the
file /usr/share/ltsp/plugins/ltsp-build-client/Ubuntu/000-basic-configuration
and commented out the lines:
#RCS_WHITELIST=${RCS_WHITELIST:-"mountkernfs.sh mountdevsubfs.sh
hostname.sh loopback udev module-init-tools procps.sh e$
#RC2_WHITELIST=${RC2_WHITELIST:-"klogd sysklogd
ltsp-client-core usplash rmnologin dbus"}
and rebuilt, but the governor is still Performance and the Printing
app still points to the LTSP server. Did I do it wrong?
> Disable nbd-proxy to lower CPU usage
> (see comment #13 in https://bugs.launchpad.net/ltsp/+bug/589034)
> and re-enable compression in /etc/ltsp/ltsp-update-image.conf to allow
> about 2.5 times more data to be sent with the same bandwidth.
Yikes, big change here:
root@ren:/home/david# dd if=/dev/nbd0 of=/dev/null
2224264+0 records in
2224264+0 records out
1138823168 bytes (1.1 GB) copied, 11.5044 s, 99.0 MB/s
Much better, and not CPU bound this time. Incidentally changing the
CPU governor and accessing /dev/nbd0 both require root access,
although in a well-tuned system neither of these would be necessary.
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