4865dd673d
Invoking the XML parser every time is quite expensive. Since we have a deep copy function for 'virQEMUCapsPtr' object, we can cache the parsed results lazily. This brings significant speedup to qemuxml2argvtest: real 0m2.234s user 0m2.140s sys 0m0.089s vs. real 0m1.161s user 0m1.087s sys 0m0.072s qemuxml2xmltest benefits too: real 0m0.879s user 0m0.801s sys 0m0.071s vs. real 0m0.466s user 0m0.424s sys 0m0.040s Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
Libvirt API for virtualization
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the website:
License
The libvirt C API is distributed under the terms of GNU Lesser
General Public License, version 2.1 (or later). Some parts of the code
that are not part of the C library may have the more restrictive GNU
General Public License, version 2.0 (or later). See the files
COPYING.LESSER and COPYING for full license
terms & conditions.
Installation
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
The libvirt project has two primary mailing lists:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: