агент домена метрик производительности виртуализации Linux (PMDA) (Linux virtualization performance metrics domain agent (PMDA))
Имя (Name)
pmdakvm - Linux virtualization performance metrics domain agent
(PMDA)
Описание (Description)
pmdakvm is a Performance Metrics Domain Agent (PMDA) which
exports metric values from the Linux KVM (Kernel Virtual Machine)
virtualization subsystem.
Per-processor KVM trace metrics from the kernel events enumerated
below /sys/kernel/debug/tracing/events/kvm can be configured
statically using the pmdakvm configuration file,
/etc/pcp/kvm/kvm.conf.
Установка (Installation)
Optionally configure trace points in the configuration file, then
install the KVM PMDA by using the Install script as root:
# cd $PCP_PMDAS_DIR/kvm
# ./Install
To uninstall, do the following as root:
# cd $PCP_PMDAS_DIR/kvm
# ./Remove
pmdakvm is launched by pmcd(1) and should never be executed
directly. The Install and Remove scripts notify pmcd(1) when the
agent is installed or removed.
Предостережение (Caveat)
When pmdakvm is running, it holds references to kernel resources
within the KVM device driver. It is thus not possible to unload
or reload the device driver module while the PMDA is running.
The ideal procedure to follow in order to reload the kernel
module is the reverse of that described in the ``INSTALLATION''
section above - i.e. first run ./Remove, then reload the kernel
module, then run ./Install.
Файлы (Files)
$PCP_SYSCONF_DIR/kvm/kvm.conf
configuration file for the pmdakvm agent
$PCP_PMDAS_DIR/kvm/Install
installation script for the pmdakvm agent
$PCP_PMDAS_DIR/kvm/Remove
undo installation script for the pmdakvm agent
$PCP_LOG_DIR/pmcd/kvm.log
default log file for error messages from pmdakvm
Окружение PCP (PCP environment)
Environment variables with the prefix PCP_ are used to
parameterize the file and directory names used by PCP. On each
installation, the file /etc/pcp.conf contains the local values
for these variables. The $PCP_CONF variable may be used to
specify an alternative configuration file, as described in
pcp.conf(5).
Смотри также (See also)
PCPIntro(1), pmcd(1) and kvm(1).
