Hey Devs,
Not sure if this is the right place to post this; if not, my apologies.
I've been testing CentOS 7 and I've been having a problem with CPU usage.
I first set up a VM with 4 procs (2.66 GHz Xeons), loaded the Gnome desktop, and ran system monitor. I got ~50% CPU usage on all four procs, doing absolutely nothing but running system monitor.
I was suspicious of this result since it was in a VM. So I loaded 7 onto a real server (a Dell PowerEdge 1800) and tested again. The 1800 has 2 x 2.8GHz Xeons and system monitor maxed out both CPUs.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
Thanks all,
Leo
On 2014-11-11, Leo Brandewie lbrandewie@dslextreme.com wrote:
Not sure if this is the right place to post this; if not, my apologies.
You probably want the CentOS users list, which is at centos@lists.centos.org and http://lists.centos.org/mailman/listinfo/centos .
--keith
I've been testing CentOS 7 and I've been having a problem with CPU usage.
I first set up a VM with 4 procs (2.66 GHz Xeons), loaded the Gnome desktop, and ran system monitor. I got ~50% CPU usage on all four procs, doing absolutely nothing but running system monitor.
I was suspicious of this result since it was in a VM. So I loaded 7 onto a real server (a Dell PowerEdge 1800) and tested again. The 1800 has 2 x 2.8GHz Xeons and system monitor maxed out both CPUs.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
Thanks.
On 11/10/2014 4:33 PM, Keith Keller wrote:
On 2014-11-11, Leo Brandewie lbrandewie@dslextreme.com wrote:
Not sure if this is the right place to post this; if not, my apologies.
You probably want the CentOS users list, which is at centos@lists.centos.org and http://lists.centos.org/mailman/listinfo/centos .
--keith
I've been testing CentOS 7 and I've been having a problem with CPU usage.
I first set up a VM with 4 procs (2.66 GHz Xeons), loaded the Gnome desktop, and ran system monitor. I got ~50% CPU usage on all four procs, doing absolutely nothing but running system monitor.
I was suspicious of this result since it was in a VM. So I loaded 7 onto a real server (a Dell PowerEdge 1800) and tested again. The 1800 has 2 x 2.8GHz Xeons and system monitor maxed out both CPUs.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
Greetings,
----- Original Message -----
Not sure if this is the right place to post this; if not, my apologies.
I've been testing CentOS 7 and I've been having a problem with CPU usage.
I first set up a VM with 4 procs (2.66 GHz Xeons), loaded the Gnome desktop, and ran system monitor. I got ~50% CPU usage on all four procs, doing absolutely nothing but running system monitor.
I was suspicious of this result since it was in a VM. So I loaded 7 onto a real server (a Dell PowerEdge 1800) and tested again. The 1800 has 2 x 2.8GHz Xeons and system monitor maxed out both CPUs.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
That is basically GNOME 3, which requires 3D acceleration, either not performing well with your hardware or using software-based 3D. Use KDE instead... or use MATE or XFCE from EPEL... and you'll notice normal performance.
There is nothing atypical about your experience.
TYL,
I see. I guess for now I'll just stick with CentOS 6.5. Thanks for the reply.
On 11/10/2014 4:46 PM, Scott Dowdle wrote:
Greetings,
----- Original Message -----
Not sure if this is the right place to post this; if not, my apologies.
I've been testing CentOS 7 and I've been having a problem with CPU usage.
I first set up a VM with 4 procs (2.66 GHz Xeons), loaded the Gnome desktop, and ran system monitor. I got ~50% CPU usage on all four procs, doing absolutely nothing but running system monitor.
I was suspicious of this result since it was in a VM. So I loaded 7 onto a real server (a Dell PowerEdge 1800) and tested again. The 1800 has 2 x 2.8GHz Xeons and system monitor maxed out both CPUs.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
That is basically GNOME 3, which requires 3D acceleration, either not performing well with your hardware or using software-based 3D. Use KDE instead... or use MATE or XFCE from EPEL... and you'll notice normal performance.
There is nothing atypical about your experience.
TYL,
loaded the Gnome desktop
I think I see part of your problem right there. The Gnome3 desktop is amazing bloatware. If your RAM is not generously allocated for all the debris on a typical Gnome desktop, you'll start swapping as well as sucking CPU for pointless 3D acceleration, especially in a VM.
You also didn't mention which virtualization technology you used. A VM that supports paravirtualization, can be far more efficient than a VM for which a server must do full virtualization.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
Compare apples to apples. Try a much lighter window manager and see if you have the same performance issue with something like XFCE. If you'd like to be really retro, you can grab my vtwm building tools at https://github.com/nkadel/vtwm-5.5.x-srpm and use something older, more stable, and much lighterweight than any of those that compiles from the same codebase on either basic OS.
I see. Thanks for the response.
On 11/10/2014 8:32 PM, Nico Kadel-Garcia wrote:
loaded the Gnome desktop
I think I see part of your problem right there. The Gnome3 desktop is amazing bloatware. If your RAM is not generously allocated for all the debris on a typical Gnome desktop, you'll start swapping as well as sucking CPU for pointless 3D acceleration, especially in a VM.
You also didn't mention which virtualization technology you used. A VM that supports paravirtualization, can be far more efficient than a VM for which a server must do full virtualization.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
Compare apples to apples. Try a much lighter window manager and see if you have the same performance issue with something like XFCE. If you'd like to be really retro, you can grab my vtwm building tools at https://github.com/nkadel/vtwm-5.5.x-srpm and use something older, more stable, and much lighterweight than any of those that compiles from the same codebase on either basic OS. _______________________________________________ CentOS-devel mailing list CentOS-devel@centos.org http://lists.centos.org/mailman/listinfo/centos-devel
Recently I have run into the bug in GNOME3 that has after a period of time, created the same result. I have gone to MATE as a stopgap, and it works fine. Here is the RH bugzilla entry, and the centos listing:
https://bugzilla.redhat.com/show_bug.cgi?id=812624 https://bugs.centos.org/view.php?id=7188
On Tue, Nov 11, 2014 at 12:54 AM, Leo Brandewie lbrandewie@dslextreme.com wrote:
I see. Thanks for the response.
On 11/10/2014 8:32 PM, Nico Kadel-Garcia wrote:
loaded the Gnome desktop
I think I see part of your problem right there. The Gnome3 desktop is amazing bloatware. If your RAM is not generously allocated for all the debris on a typical Gnome desktop, you'll start swapping as well as sucking CPU for pointless 3D acceleration, especially in a VM.
You also didn't mention which virtualization technology you used. A VM that supports paravirtualization, can be far more efficient than a VM for which a server must do full virtualization.
I'm astounded. I have no way of knowing if the problem is also present in RHEL 7. I can say it's not at all present in CentOS 6.5. I have a fair amount of experience with that OS.
Compare apples to apples. Try a much lighter window manager and see if you have the same performance issue with something like XFCE. If you'd like to be really retro, you can grab my vtwm building tools at https://github.com/nkadel/vtwm-5.5.x-srpm and use something older, more stable, and much lighterweight than any of those that compiles from the same codebase on either basic OS. _______________________________________________ CentOS-devel mailing list CentOS-devel@centos.org http://lists.centos.org/mailman/listinfo/centos-devel
CentOS-devel mailing list CentOS-devel@centos.org http://lists.centos.org/mailman/listinfo/centos-devel
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