--Apple-Mail=_8EBE51A3-CB56-467D-AE07-099AC81F579F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8
On 14 Apr 2017, at 18:56, Joseph Chapman <chapman.joseph@gmail.com> = wrote: =20 Hello all,=20 =20 I have a RHEV 4.1 host running Windows 10 VMs. I have installed the = balloon driver on the VMs (RHEV guest tools), and enabled memory = ballooning on the cluster using RHEV-M. On the VMs, I have set the = system memory to Memory Size: 4GB, Maximum Memory: 16GB.=20
Hi Joseph, ballooning is unrelated to the memory hot plug. You need ballooning for = memory overcommit to reclaim the guest=E2=80=99s memory back to = host/other VMs. If that is what you want to do the just enable = ballooning and use 16GB memory size
=20 While I can manually hot plug memory, I am not seeing additional = memory being automatically allocated to the VMs during a SQL workload. = The documentation for RHEV 4.1 is not clear on whether or not this = automatic ballooning is functional (earlier documentation suggests that = it is functional only by use of an API).
=20 I am new to RHEV and would appreciate some help troubleshooting this. = Please let me know if there's any additional information I should =
hotplugging is user action, on demand. If you want to have complete = control over the guest memory size you can use hotplugging without = balloon. It=E2=80=99s somewhat overlapping, ballooning is more flexible(can = inflate and deflate based on host memory pressure), on the other hand = requires guest cooperation and some time to settle on the right value. Thanks, michal provide. I messaged this mailing list on suggestion from someone in the = IRC. I hope this is in-bounds.=20
=20 Thanks for your time!=20 =20 --=20 Joseph Chapman http://fjchapman.tumblr.com <http://fjchapman.tumblr.com/> +1 828 777 0751=20 _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail=_8EBE51A3-CB56-467D-AE07-099AC81F579F Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" = class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div = class=3D"">On 14 Apr 2017, at 18:56, Joseph Chapman <<a = href=3D"mailto:chapman.joseph@gmail.com" = class=3D"">chapman.joseph@gmail.com</a>> wrote:</div><br = class=3D"Apple-interchange-newline"><div class=3D""><div dir=3D"ltr" = class=3D"">Hello all, <div class=3D""><br class=3D""></div><div = class=3D"">I have a RHEV 4.1 host running Windows 10 VMs. I have = installed the balloon driver on the VMs (RHEV guest tools), and enabled = memory ballooning on the cluster using RHEV-M. On the VMs, I have set = the system memory to Memory Size: 4GB, Maximum Memory: = 16GB. </div></div></div></blockquote><div><br class=3D""></div>Hi = Joseph,</div><div>ballooning is unrelated to the memory hot plug. You = need ballooning for memory overcommit to reclaim the guest=E2=80=99s = memory back to host/other VMs. If that is what you want to do the just = enable ballooning and use 16GB memory size</div><div><br = class=3D""><blockquote type=3D"cite" class=3D""><div class=3D""><div = dir=3D"ltr" class=3D""><div class=3D""><br class=3D""></div><div = class=3D"">While I can manually hot plug memory, I am not seeing = additional memory being automatically allocated to the VMs during a SQL = workload. The documentation for RHEV 4.1 is not clear on whether or not = this automatic ballooning is functional (earlier documentation suggests = that it is functional only by use of an = API).</div></div></div></blockquote><div><br = class=3D""></div><div>hotplugging is user action, on demand. If you want = to have complete control over the guest memory size you can use = hotplugging without balloon.</div><div>It=E2=80=99s somewhat = overlapping, ballooning is more flexible(can inflate and deflate based = on host memory pressure), on the other hand requires guest cooperation = and some time to settle on the right value.</div><div><br = class=3D""></div><div>Thanks,</div><div>michal</div><br = class=3D""><blockquote type=3D"cite" class=3D""><div class=3D""><div = dir=3D"ltr" class=3D""><div class=3D""><br class=3D"">I am new to RHEV = and would appreciate some help troubleshooting this. Please let me know = if there's any additional information I should provide. I messaged this = mailing list on suggestion from someone in the IRC. I hope this is = in-bounds. </div><div class=3D""><br class=3D""></div><div = class=3D"">Thanks for your time! <br clear=3D"all" class=3D""><div = class=3D""><br class=3D""></div>-- <br class=3D""><div = class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div = dir=3D"ltr" class=3D"">Joseph Chapman<br class=3D""><a = href=3D"http://fjchapman.tumblr.com/" target=3D"_blank" = class=3D"">http://fjchapman.tumblr.com</a><br class=3D"">+1 828 777 = 0751 </div></div> </div></div> _______________________________________________<br class=3D"">Users = mailing list<br class=3D""><a href=3D"mailto:Users@ovirt.org" = class=3D"">Users@ovirt.org</a><br = class=3D"">http://lists.ovirt.org/mailman/listinfo/users<br = class=3D""></div></blockquote></div><br class=3D""></body></html>= --Apple-Mail=_8EBE51A3-CB56-467D-AE07-099AC81F579F--