<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">What does /proc/meminfo says ?<div class=""><br class=""></div><div class="">Memory usage is a complex thing.</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">Le 10 août 2017 à 23:23, Wesley Stewart <<a href="mailto:wstewart3@gmail.com" class="">wstewart3@gmail.com</a>> a écrit :</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I am a little confused on why my CentOS box is using so much RAM. I currently have a small test setup which only has <b class="">12GB</b> of ram total.<div class=""><br class="">When I log into the administrative interface it tells me:</div><div class=""><br class=""></div><div class=""><h3 style="box-sizing:border-box;font-family:"Open Sans",Helvetica,Arial,sans-serif;line-height:1.1;color:rgb(54,54,54);margin-top:7px;margin-bottom:10px;font-size:16px" class=""><u class="">Memory</u></h3><div class="gmail-current-values" style="box-sizing:border-box;border-bottom:1px solid rgb(209,209,209);float:left;padding:0px 5px 10px 0px;width:513.656px"><h1 class="gmail-available-count gmail-pull-left" style="color:inherit;font-family:inherit;font-size:24px;box-sizing:border-box;margin:3px 0px;font-weight:300;line-height:1.1;padding-left:0px;padding-right:5px;float:left">4.3</h1><div class="gmail-pull-left gmail-available-text" style="color:rgb(51,51,51);font-family:"Open Sans",Helvetica,Arial,sans-serif;font-size:12px;box-sizing:border-box;line-height:14px;margin:2px 0px;padding:0px 5px;float:left"><div style="box-sizing:border-box" class="">Available</div><div style="box-sizing:border-box" class="">of 15.5 GiB </div></div><div style="color:rgb(54,54,54);font-family:"Open Sans",Helvetica,Arial,sans-serif;font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class="">Over commit: 39% (allocated 45%)<br class=""><br class="">11.1 GB Used</div><div style="color:rgb(54,54,54);font-family:"Open Sans",Helvetica,Arial,sans-serif;font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><br class=""></div><div style="color:rgb(54,54,54);font-family:"Open Sans",Helvetica,Arial,sans-serif;font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class="">Currently I am only running 3 VMs with memory allocations as follows:</div><div style="color:rgb(54,54,54);font-family:"Open Sans",Helvetica,Arial,sans-serif;font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><br class=""></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">Defined Memory:</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">1024 MB</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">Physical Memory Guaranteed:</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">1024 MB</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class=""><br class=""></span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">Defined Memory:</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">3072 MB</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">Physical Memory Guaranteed:</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">3072 MB</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class=""><br class=""></span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">Defined Memory:</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">2048 MB</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">Physical Memory Guaranteed:</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">2048 MB</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class=""><b class="">Or 6144MB used by VM</b></span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class=""><br class=""></span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><span style="font-size:12px" class="">If I SSH into my ovirt host, and run TOP and sort by memory, the top usage items are:</span></font></div><div style="box-sizing:border-box;clear:left;padding-top:5px" class=""><font color="#363636" face="Open Sans, Helvetica, Arial, sans-serif" class=""><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class="">31896 qemu <b class="">21.5%</b> 727:21.44 qemu-kvm</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""> 6008 qemu <b class="">14.6%</b> 190:33.70 qemu-kvm</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""> 3019 ovirt <b class="">13.6%</b> 35:47.64 java</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""> 5800 qemu <b class="">8.5%</b> 784:26.88 qemu-kvm</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""> 2565 ovirt <b class="">3.9%</b> 62:58.00 java</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><br class=""></div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class="">Everything else is pretty small compared, but for the OVIRT/QEMU we roughly get<br class=""></div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><b class="">Total: 62% = 7.45GB<br class=""><br class=""></b></div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class="">So I am a bit confused as to the Ram being reported to me by the system (15.5GGB, but the system only has 12GB), and assuming OVIRT is using around 7-8GB, does a bare minimal install of CentOS really need 4-5GB of Ram to run?</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><br class=""></div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class="">This is a bare minimal install of CentOS7 running only Webmin and oVirt. I think there are several things I don't understand here, and I am quite new to oVirt and would like to learn, so please excuse my inexperience if this is a silly question!</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><br class=""></div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class="">Thanks either way, I am really happy I ditched my ESXi box :D</div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><b class=""><br class=""></b></div><div style="font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><b class=""><br class=""></b></div></font></div></div><div style="color:rgb(54,54,54);font-family:"Open Sans",Helvetica,Arial,sans-serif;font-size:12px;box-sizing:border-box;clear:left;padding-top:5px" class=""><br class=""></div></div></div></div>
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