For stability reasons, I'm running CentOS 4 for VMware (it's the devil I know).
Are there any compelling reasons to upgrade to CentOS 5 for it? I'm relatively new to the whole virtualisation scene and perhaps there are some updated packages that might be good for VMware?
On Fri, Aug 03, 2007 at 10:24:44AM -0700, Rogelio Bastardo wrote:
For stability reasons, I'm running CentOS 4 for VMware (it's the devil I know).
Are there any compelling reasons to upgrade to CentOS 5 for it? I'm relatively new to the whole virtualisation scene and perhaps there are some updated packages that might be good for VMware?
Seems to run fine on CentOS 5 as well.
CentOS 5 kernel lets you exclude some processes from consideration for "death" by the OOM killer which is kinda nice. :)
Of course there are plenty of other settings in the 4 kernel that help keep VMware safe from being accidentally killed.
Ray
On Fri, 2007-08-03 at 10:27 -0700, Ray Van Dolson wrote:
On Fri, Aug 03, 2007 at 10:24:44AM -0700, Rogelio Bastardo wrote:
For stability reasons, I'm running CentOS 4 for VMware (it's the devil I know).
Are there any compelling reasons to upgrade to CentOS 5 for it? I'm relatively new to the whole virtualisation scene and perhaps there are some updated packages that might be good for VMware?
Seems to run fine on CentOS 5 as well.
CentOS 5 kernel lets you exclude some processes from consideration for "death" by the OOM killer which is kinda nice. :)
Of course there are plenty of other settings in the 4 kernel that help keep VMware safe from being accidentally killed.
Ray _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
I've run GSX on both 4 and 5, nothing really of note to say other than that VMWare does not yet "support" GSX on RHEL5 as of version 1.0.3. Really that only means that there aren't pre-compiled versions of the kernel modules and you will need to re-run vmware-config.pl each time the kernel is updated
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you noticed tangible differences when running stock vs the kernels mentioned there?
Ray
On 8/3/07, Ray Van Dolson rvandolson@esri.com wrote:
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you noticed tangible differences when running stock vs the kernels mentioned there?
Ray
In my case, the default kernel (1000Hz) produces "many lost ticks" messages. So far this has not been seen on VM guests running the 100Hz kernel (both i686 and x86_64). There seems to be performance improvement also.
Akemi
I compiled my own kernels for c4 and c5 that dropped the HZ down to 100. For me, it's a big improvement, especially when it comes to keeping the clock correct in the vm. And yes, performance is slightly better, because the vms aren't killing the hardware with unnecessary cpu usage trying to process all those ticks.
Thanks for the kernels. Hopefully they will be eventually added to the centosplus repos. ________________________________________ From: centos-bounces@centos.org [centos-bounces@centos.org] On Behalf Of Ray Van Dolson [rvandolson@esri.com] Sent: Friday, August 03, 2007 1:35 PM To: centos@centos.org Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you noticed tangible differences when running stock vs the kernels mentioned there?
Ray _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Donald Maner wrote:
I compiled my own kernels for c4 and c5 that dropped the HZ down to 100. For me, it's a big improvement, especially when it comes to keeping the clock correct in the vm. And yes, performance is slightly better, because the vms aren't killing the hardware with unnecessary cpu usage trying to process all those ticks.
Thanks for the kernels. Hopefully they will be eventually added to the centosplus repos. ________________________________________ From: centos-bounces@centos.org [centos-bounces@centos.org] On Behalf Of Ray Van Dolson [rvandolson@esri.com] Sent: Friday, August 03, 2007 1:35 PM To: centos@centos.org Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you noticed tangible differences when running stock vs the kernels mentioned there?
The kernels are available in testing form here:
Donald Maner wrote:
I compiled my own kernels for c4 and c5 that dropped the HZ down to 100. For me, it's a big improvement, especially when it comes to keeping the clock correct in the vm. And yes, performance is slightly better, because the vms aren't killing the hardware with unnecessary cpu usage trying to process all those ticks.
Thanks for the kernels. Hopefully they will be eventually added to the centosplus repos. ________________________________________ From: centos-bounces@centos.org [centos-bounces@centos.org] On Behalf Of Ray Van Dolson [rvandolson@esri.com] Sent: Friday, August 03, 2007 1:35 PM To: centos@centos.org Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you noticed tangible differences when running stock vs the kernels mentioned there?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
redhat@mckerrs.net wrote:
Donald Maner wrote:
I compiled my own kernels for c4 and c5 that dropped the HZ down to 100. For me, it's a big improvement, especially when it comes to keeping the clock correct in the vm. And yes, performance is slightly better, because the vms aren't killing the hardware with unnecessary cpu usage trying to process all those ticks.
Thanks for the kernels. Hopefully they will be eventually added to the centosplus repos. ________________________________________ From: centos-bounces@centos.org [centos-bounces@centos.org] On Behalf Of Ray Van Dolson [rvandolson@esri.com] Sent: Friday, August 03, 2007 1:35 PM To: centos@centos.org Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you noticed tangible differences when running stock vs the kernels mentioned there?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
Maybe ... we are trying to work out a way to prevent conflict. Users seem to have a problem with more than 1 item of the same type in a specific repo. We will put out instructions on how to use "exclude=whatever" in yum, but they don't and then we get a hundred bug reports / e-mails that the plus kernel replaces the vmware kernel or the other way around.
If we can have them easily coexist in the same repo and make it EASY for the users and provide the content, then we will put them there, otherwise (or until then) people will need to look for it here.
Thanks, Johnny Hughes
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 9:55:10 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
redhat@mckerrs.net wrote:
Donald Maner wrote:
I compiled my own kernels for c4 and c5 that dropped the HZ down to 100. For me, it's a big improvement, especially when it comes to keeping the clock correct in the vm. And yes, performance is slightly better, because the vms aren't killing the hardware with unnecessary cpu usage trying to process all those ticks.
Thanks for the kernels. Hopefully they will be eventually added to the centosplus repos. ________________________________________ From: centos-bounces@centos.org [centos-bounces@centos.org] On Behalf Of Ray Van Dolson [rvandolson@esri.com] Sent: Friday, August 03, 2007 1:35 PM To: centos@centos.org Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
Also, there is a special kernel that helps out on running VMWare that changes the default speed of the system timer, reducing the LA on the host system especially if your guests are mostly idle. The kernel is available for both 4 and 5. Please look at http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you noticed tangible differences when running stock vs the kernels mentioned there?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
Maybe ... we are trying to work out a way to prevent conflict. Users seem to have a problem with more than 1 item of the same type in a specific repo. We will put out instructions on how to use "exclude=whatever" in yum, but they don't and then we get a hundred bug reports / e-mails that the plus kernel replaces the vmware kernel or the other way around.
If we can have them easily coexist in the same repo and make it EASY for the users and provide the content, then we will put them there, otherwise (or until then) people will need to look for it here.
Thanks, Johnny Hughes
Cool,
would you say they are ready for primetime even although they are in 'testing' ?
Cheers,
Brian.
On 8/6/07, redhat@mckerrs.net redhat@mckerrs.net wrote:
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 9:55:10 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
Maybe ... we are trying to work out a way to prevent conflict. Users seem to have a problem with more than 1 item of the same type in a specific repo. We will put out instructions on how to use "exclude=whatever" in yum, but they don't and then we get a hundred bug reports / e-mails that the plus kernel replaces the vmware kernel or the other way around.
If we can have them easily coexist in the same repo and make it EASY for the users and provide the content, then we will put them there, otherwise (or until then) people will need to look for it here.
Thanks, Johnny Hughes
Cool,
would you say they are ready for primetime even although they are in 'testing' ?
Cheers,
Brian.
The i686 version has been tested / used for a while now and I'm sure Johnny can tell you his experience. As for x86_64, it is not as extensively tried. I have been running it in a test VM and all seems good so far.
Akemi
----- Original Message ----- From: "Akemi Yagi" amyagi@gmail.com To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 10:49:26 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
On 8/6/07, redhat@mckerrs.net redhat@mckerrs.net wrote:
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 9:55:10 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
Maybe ... we are trying to work out a way to prevent conflict. Users seem to have a problem with more than 1 item of the same type in a specific repo. We will put out instructions on how to use "exclude=whatever" in yum, but they don't and then we get a hundred bug reports / e-mails that the plus kernel replaces the vmware kernel or the other way around.
If we can have them easily coexist in the same repo and make it EASY for the users and provide the content, then we will put them there, otherwise (or until then) people will need to look for it here.
Thanks, Johnny Hughes
Cool,
would you say they are ready for primetime even although they are in 'testing' ?
Cheers,
Brian.
The i686 version has been tested / used for a while now and I'm sure Johnny can tell you his experience. As for x86_64, it is not as extensively tried. I have been running it in a test VM and all seems good so far.
Akemi _______________________________________________
Does anyone know if the i686 version is PAE enabled ?
Cheers.
On 8/7/07, redhat@mckerrs.net redhat@mckerrs.net wrote:
----- Original Message ----- From: "Akemi Yagi" amyagi@gmail.com To: "CentOS mailing list" centos@centos.org
The i686 version has been tested / used for a while now and I'm sure Johnny can tell you his experience. As for x86_64, it is not as extensively tried. I have been running it in a test VM and all seems good so far.
Akemi _______________________________________________
Does anyone know if the i686 version is PAE enabled ?
Cheers.
No, it is just the standard kernel.
Akemi
redhat@mckerrs.net wrote:
----- Original Message ----- From: "Akemi Yagi" amyagi@gmail.com To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 10:49:26 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
On 8/6/07, redhat@mckerrs.net redhat@mckerrs.net wrote:
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 9:55:10 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
Maybe ... we are trying to work out a way to prevent conflict. Users seem to have a problem with more than 1 item of the same type in a specific repo. We will put out instructions on how to use "exclude=whatever" in yum, but they don't and then we get a hundred bug reports / e-mails that the plus kernel replaces the vmware kernel or the other way around.
If we can have them easily coexist in the same repo and make it EASY for the users and provide the content, then we will put them there, otherwise (or until then) people will need to look for it here.
Thanks, Johnny Hughes
Cool,
would you say they are ready for primetime even although they are in
'testing' ?
Cheers,
Brian.
The i686 version has been tested / used for a while now and I'm sure Johnny can tell you his experience. As for x86_64, it is not as extensively tried. I have been running it in a test VM and all seems good so far.
Akemi _______________________________________________
Does anyone know if the i686 version is PAE enabled ?
I PAE kernel is really not something I think I would run inside VMware ... or am I missing something here?
http://www.vmware.com/pdf/GuestOS_guide.pdf
That says you will not be happy with PAE inside the VM.
Thanks, Johnny Hughes
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Tuesday, August 7, 2007 9:28:50 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
redhat@mckerrs.net wrote:
----- Original Message ----- From: "Akemi Yagi" amyagi@gmail.com To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 10:49:26 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
On 8/6/07, redhat@mckerrs.net redhat@mckerrs.net wrote:
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 9:55:10 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
Maybe ... we are trying to work out a way to prevent conflict. Users seem to have a problem with more than 1 item of the same type in a specific repo. We will put out instructions on how to use "exclude=whatever" in yum, but they don't and then we get a hundred bug reports / e-mails that the plus kernel replaces the vmware kernel or the other way around.
If we can have them easily coexist in the same repo and make it EASY for the users and provide the content, then we will put them there, otherwise (or until then) people will need to look for it here.
Thanks, Johnny Hughes
Cool,
would you say they are ready for primetime even although they are in
'testing' ?
Cheers,
Brian.
The i686 version has been tested / used for a while now and I'm sure Johnny can tell you his experience. As for x86_64, it is not as extensively tried. I have been running it in a test VM and all seems good so far.
Akemi _______________________________________________
Does anyone know if the i686 version is PAE enabled ?
I PAE kernel is really not something I think I would run inside VMware ... or am I missing something here?
http://www.vmware.com/pdf/GuestOS_guide.pdf
That says you will not be happy with PAE inside the VM.
Thanks, Johnny Hughes
I was more wondering about using this as a host kernel and whether it would support > 4gb RAM ?
Cheers
redhat@mckerrs.net wrote:
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Tuesday, August 7, 2007 9:28:50 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
redhat@mckerrs.net wrote:
----- Original Message ----- From: "Akemi Yagi" amyagi@gmail.com To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 10:49:26 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
On 8/6/07, redhat@mckerrs.net redhat@mckerrs.net wrote:
----- Original Message ----- From: "Johnny Hughes" johnny@centos.org To: "CentOS mailing list" centos@centos.org Sent: Monday, August 6, 2007 9:55:10 PM (GMT+1000) Australia/Brisbane Subject: Re: [CentOS] CentOS 4 vs 5 for VMware?
The kernels are available in testing form here:
http://people.centos.org/~hughesjr/vmware-kernels/
Johnny, will these kernels eventually be pushed into centosplus ?
Maybe ... we are trying to work out a way to prevent conflict. Users seem to have a problem with more than 1 item of the same type in a specific repo. We will put out instructions on how to use "exclude=whatever" in yum, but they don't and then we get a hundred bug reports / e-mails that the plus kernel replaces the vmware kernel or the other way around.
If we can have them easily coexist in the same repo and make it EASY for the users and provide the content, then we will put them there, otherwise (or until then) people will need to look for it here.
Thanks, Johnny Hughes
Cool,
would you say they are ready for primetime even although they are in
'testing' ?
Cheers,
Brian.
The i686 version has been tested / used for a while now and I'm sure Johnny can tell you his experience. As for x86_64, it is not as extensively tried. I have been running it in a test VM and all seems good so far.
Akemi _______________________________________________
Does anyone know if the i686 version is PAE enabled ?
I PAE kernel is really not something I think I would run inside VMware ... or am I missing something here?
http://www.vmware.com/pdf/GuestOS_guide.pdf
That says you will not be happy with PAE inside the VM.
Thanks, Johnny Hughes
I was more wondering about using this as a host kernel and whether it would support > 4gb RAM ?
This kernel is designed for use in a vmware client only ... it is not for using on the host.
The purpose of this kernel is to solve issues with the kernel timer by setting the the timer from 1000HZ or 250HZ to 100HZ. You would not want to do this on the host ... only on the client. It is to fix this problem:
http://bugs.centos.org/view.php?id=2189
Using a standard kernel on the host is much better than using this kernel ... and the standard kernels have PAE support for the host.
Thanks, Johnny Hughes
On Fri, 2007-08-03 at 10:24 -0700, Rogelio Bastardo wrote:
For stability reasons, I'm running CentOS 4 for VMware (it's the devil I know).
Are there any compelling reasons to upgrade to CentOS 5 for it? I'm relatively new to the whole virtualisation scene and perhaps there are some updated packages that might be good for VMware?
VMware works fine under either 4 or 5, and both 4 and 5 run under VMware on a Linux host, but is your question about CentOS as a host or guest OS?
Phil
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Akemi Yagi -
Donald Maner -
Johnny Hughes -
Phil Schaffner -
Ray Van Dolson -
redhat＠mckerrs.net -
Rogelio Bastardo -
Timothy Selivanow