Actually I'm getting some lag occasionally to anywhere right now so it may just be my Comcrap cable internet acting up. I'll check the video later tonight when traffic is lighter.
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On Fri, 3 Apr 2015, Robert Dinse wrote:
Date: Fri, 3 Apr 2015 16:53:53 -0700 (PDT) From: Robert Dinse <nanook@eskimo.com> To: Mihai Moldovan <ionic@ionic.de> Cc: "x2go-user@lists.x2go.org" <x2go-user@lists.x2go.org> Subject: Re: [X2Go-User] Centos 7
Thank you. Duh I don't know how I could stare at that directory and notnotice the missing extension. Ugh.
Thank you for your help. The 3.19.3 kernel I built is not onlypreemptive but also stripped of most of the stuff I don't use. I also turn off most of the kernel hacking and profiling stuff since it adds a tiny bit of overhead.
It helped considerably over either the stock kernel or the one off ofel repo (the el repo 3.19.3-ml kernel), however the video isn't 100% fluid.
With the el repo kernel I got around maybe 10 frames per second, withmy custom kernel I get around 30 frames per second most of the time but there are occasional glitches where the video will freeze for maybe a third of a second.
Under Ubuntu, a kernel built the same way, the video is fluid. Theremust be something in CentOS eating more resources.
Still the performance with preemptive enabled is significantly betterthan without (server side).
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On Fri, 3 Apr 2015, Robert Dinse wrote:
Date: Fri, 3 Apr 2015 16:36:34 -0700 (PDT) From: Robert Dinse <nanook@eskimo.com> To: Mihai Moldovan <ionic@ionic.de> Cc: "x2go-user@lists.x2go.org" <x2go-user@lists.x2go.org> Subject: Re: [X2Go-User] Centos 7
Something still isn't right, missing the step to create initramfs,so I added:
mkinitrd initramfs-3.19.3-kg-1 3.19.3-kg-1
It creates it but when I run:grub2-mkconfig -o /boot/grub2/grub.cfg
It doesn't see it:Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.19.3-kg-1 Found linux image: /boot/vmlinuz-3.19.3-1.el7.elrepo.x86_64 Found initrd image: /boot/initramfs-3.19.3-1.el7.elrepo.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-10a4840ccefb6d2f7accde9f4562308f Found initrd image: /boot/initramfs-0-rescue-10a4840ccefb6d2f7accde9f4562308f.im
It finds the vmlinuz but not the initramfs. Is there some conf file Ihave to add that to? Sorry not much experience with grub2 by hand, just the old grub, and the make file does the right thing on the Debian based machines.
The kernel I'm trying to add is vmlinuz-3.19.3-kg-1-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.
On Sat, 4 Apr 2015, Mihai Moldovan wrote:
Date: Sat, 04 Apr 2015 00:54:26 +0200 From: Mihai Moldovan <ionic@ionic.de> To: Robert Dinse <nanook@eskimo.com>, "x2go-user@lists.x2go.org" <x2go-user@lists.x2go.org> Subject: Re: [X2Go-User] Centos 7
On 03.04.2015 09:38 PM, Robert Dinse wrote:
Under CentOS 7 I've updated to the latest kernel provided in the El Reporepository,
kernel-ml.x86_64 3.19.3-1.el7.elrepo @elrepo-kernel They have no version configured with pre-emption and this versionwithout does not provide smooth video over x2go, very jerky and laggy like the stock kernel.
If I build a kernel from source from kernel.org, even using the sameconf, and install it:
make clean; make; make modules_install installI wouldn't use "make install".
cp arch/x86_64/boot/bzImage /boot/vmlinuz-3.19.3 cp System.map /boot/System.map-3.19.3
(or whatever the "real" version is, maybe even with the "localversion" string appended. You'll figure it out. The actual path may differ based on your architecture and the naming conventions of in /boot/.) / /Afterwards,
grub2-mkconfig -o /boot/grub2/grub.cfg
And you're all set.
Try rebooting and it should work just fine.
Do not try to update grub.
Mihai
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