External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-08-06 08:53:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

Adding memtunables to qemuSetupCgroup

Browse Source 
QEmu startup will pick up the memory tunables specified in the domain
configuration file
This commit is contained in:
Nikunj A. Dadhania 2010-10-12 18:12:31 +02:00 committed by Daniel Veillard
parent 013fe4b848
commit 261ad74e52
3 changed files with 38 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/qemu/qemu.conf
View File

@ -111,13 +111,13 @@
# the adminsitrator has mounted cgroups. eg
#
# mkdir /dev/cgroup
# mount -t cgroup -o devices,cpu none /dev/cgroup
# mount -t cgroup -o devices,cpu,memory none /dev/cgroup
#
# They can be mounted anywhere, and different controlers
# can be mounted in different locations. libvirt will detect
# where they are located.
#
# cgroup_controllers = [ "cpu", "devices" ]
# cgroup_controllers = [ "cpu", "devices", "memory" ]
# This is the basic set of devices allowed / required by
# all virtual machines.

3
src/qemu/qemu_conf.c
View File

@ -275,7 +275,8 @@ int qemudLoadDriverConfig(struct qemud_driver *driver,
} else {
driver->cgroupControllers =
(1 << VIR_CGROUP_CONTROLLER_CPU) |
(1 << VIR_CGROUP_CONTROLLER_DEVICES);
(1 << VIR_CGROUP_CONTROLLER_DEVICES) |
(1 << VIR_CGROUP_CONTROLLER_MEMORY);
}
for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) {
if (driver->cgroupControllers & (1 << i)) {

34
src/qemu/qemu_driver.c
View File

@ -3497,6 +3497,40 @@ static int qemuSetupCgroup(struct qemud_driver *driver,
goto cleanup;
}
if ((rc = qemuCgroupControllerActive(driver, VIR_CGROUP_CONTROLLER_MEMORY))) {
if (vm->def->mem.hard_limit != 0) {
rc = virCgroupSetMemoryHardLimit(cgroup, vm->def->mem.hard_limit);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set memory hard limit for domain %s"),
vm->def->name);
goto cleanup;
}
}
if (vm->def->mem.soft_limit != 0) {
rc = virCgroupSetMemorySoftLimit(cgroup, vm->def->mem.soft_limit);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set memory soft limit for domain %s"),
vm->def->name);
goto cleanup;
}
}
if (vm->def->mem.swap_hard_limit != 0) {
rc = virCgroupSetSwapHardLimit(cgroup, vm->def->mem.swap_hard_limit);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set swap hard limit for domain %s"),
vm->def->name);
goto cleanup;
}
}
} else {
VIR_WARN("Memory cgroup is disabled in qemu configuration file: %s",
vm->def->name);
}
done:
virCgroupFree(&cgroup);
return 0;