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IDProjectCategoryView StatusLast Update
0013061CentOS-7kernelpublic2019-03-13 13:36
Reporterfulltower 
PriorityhighSeveritymajorReproducibilityalways
Status newResolutionopen 
Product Version7.3.1611 
Target VersionFixed in Version 
Summary0013061: On Xen, the VM memory is less than the actual
DescriptionOn xen, when my RHEL7.3 virtual machine memory configuration for the 8G, but when using the "free" command to view, can only see about 7G。
Steps To Reproduce1.boot a VM with 8G memory
2.After booting, we logged in the VM, and check the system memory that were 7.2G by "free" command, less than the configure.
Additional Informationwhen we install the following fix patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c275a57f5ec3056f732843b11659d892235faff7
the memory is similar as expected results
Tagsxen
abrt_hash
URL

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MartinEmrich

MartinEmrich

2019-03-13 13:34

reporter   ~0033995

Although this bug report is 2 years old, I can confirm it.

Kernel: 3.10.0-957.5.1.el7.x86_64
Hypervisor: Xen 4.7.6 (XCP-ng)

With dynamic memory enabled (dynamic 1GB, static max 4GB):
              total used free shared buff/cache available
Mem: 711876 172796 220148 5680 318932 402648
Swap: 1048572 0 1048572

With min_static = min_dynamic = max_dynamic = max_static = 1GB, effectively disabling Xen dynamic memory management:
              total used free shared buff/cache available
Mem: 991944 314684 63888 324056 613372 183232
Swap: 1048572 6656 1041916

Issue History

Date Modified Username Field Change
2017-03-30 04:19 fulltower New Issue
2017-03-30 04:19 fulltower Tag Attached: xen
2019-03-13 13:34 MartinEmrich Note Added: 0033995