Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-30 Thread Mark Post
>>> On 8/30/2016 at 10:57 AM, Marcy Cortes >>> wrote: > Does anyone else think that's a problem that its doing that by default? That rule was originally added to fix a problem in the Intel/AMD world. That doesn't mean it should be applied to all architectures. Hint. Mark Post

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-30 Thread Marcy Cortes
-Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Mark Post Sent: Tuesday, August 30, 2016 9:00 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Offline/STANDBY memory - Linux vs z/VM >>> On 8/30/2016 at 10:57 AM, Marcy Cortes >&g

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-30 Thread Marcy Cortes
n 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Mohammad Zachariah Sent: Tuesday, August 30, 2016 4:59 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Offline/STANDBY memory - Linux vs z/VM New systemd (I think starting from systemd-219-19) will online/consume standby memory duri

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-30 Thread Heiko Carstens
On Tue, Aug 30, 2016 at 01:59:29PM +0200, Mohammad Zachariah wrote: > > New systemd (I think starting from systemd-219-19) will online/consume > standby memory during startup. Commenting out udev memory hotadd rule is > not enough. These rules (cpu + memory) seem to be only available for distribut

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-30 Thread Mohammad Zachariah
Egypt From: Heiko Carstens To: LINUX-390@VM.MARIST.EDU Date: 08/30/2016 01:24 PM Subject:Re: Offline/STANDBY memory - Linux vs z/VM Sent by:Linux on 390 Port On

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-30 Thread Heiko Carstens
On Tue, Aug 30, 2016 at 06:23:50AM -0400, Michael MacIsaac wrote: > > Hmmm... a difference of exactly 512MB. > That's two chunks, since a chunk is 256 MB. > > I hard rebooted and this time Linux took three extra chunks: (just can't > keep his hands out of the cookie jar :)) > > # zruncommand linu

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-30 Thread Michael MacIsaac
> Hmmm... a difference of exactly 512MB. That's two chunks, since a chunk is 256 MB. I hard rebooted and this time Linux took three extra chunks: (just can't keep his hands out of the cookie jar :)) # zruncommand linux255 lsmem Address Range Size (MB) StateRemovabl

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-29 Thread Mark Post
>>> On 8/29/2016 at 05:53 PM, Michael MacIsaac wrote: > Maybe it could succeed by default, and I could add a '--anal-retentive' > flag if someone wants the exact amount of memory. (he he) And when the system administrator realizes [s]he didn't get as much memory as they asked for (with a good r

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-29 Thread Michael MacIsaac
Mark, Maybe it could succeed by default, and I could add a '--anal-retentive' flag if someone wants the exact amount of memory. (he he) -Mike On Mon, Aug 29, 2016 at 5:08 PM, Mark Post wrote: > >>> On 8/29/2016 at 05:03 PM, Michael MacIsaac > wrote: > > VM thinks there is 7G of STANDBY, b

Re: Offline/STANDBY memory - Linux vs z/VM

2016-08-29 Thread Mark Post
>>> On 8/29/2016 at 05:03 PM, Michael MacIsaac wrote: > VM thinks there is 7G of STANDBY, but Linux seems to have taken a bit more. > So if the user tries to add 7G, that can be done in the user directory, but > in Linux only 6.5G or so can be added. > > Would it be better to just add all that's

Offline/STANDBY memory - Linux vs z/VM

2016-08-29 Thread Michael MacIsaac
One more question under the Principle of Least Astonishment. You have a virtual machine with an initial of 1G and a STANDBY of 7G. So you can add another 7G, right? Well yes for VM, but sorry, no for Linux: # zqdirentry linux255 | grep STORAGE COMMAND DEFINE STORAGE 1G STANDBY 7G # zruncomman