12:52 p.m.
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On 14 Apr 2017, at 18:56, Joseph Chapman
<chapman.joseph(a)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).
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
=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 =
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(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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<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(a)gmail.com</a>&gt;
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(a)ovirt.org</a><br =
class=3D"">http://lists.ovirt.org/mailman/listinfo/users<br =
class=3D""></div></blockquote></div><br
class=3D""></body></html>=
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