Platform LSF Administration Guide Version 6.2

Load Indices
Administering Platform LSF
210
CPU run queue lengths (r15s, r1m, r15m)
The r15s, r1m and r15m load indices are the 15-second, 1-minute and 15-minute
average CPU run queue lengths. This is the average number of processes ready to use
the CPU during the given interval.
On UNIX, run queue length indices are not necessarily the same as the load averages
printed by the
uptime(1) command; uptime load averages on some platforms also
include processes that are in short-term wait states (such as paging or disk I/O).
Effective run
queue length
On multiprocessor systems, more than one process can execute at a time. LSF scales the
run queue value on multiprocessor systems to make the CPU load of uniprocessors and
multiprocessors comparable. The scaled value is called the effective run queue length.
Use
lsload -E to view the effective run queue length.
Normalized run
queue length
LSF also adjusts the CPU run queue based on the relative speeds of the processors (the
CPU factor). The normalized run queue length is adjusted for both number of
processors and CPU speed. The host with the lowest normalized run queue length will
run a CPU-intensive job the fastest.
Use
lsload -N to view the normalized CPU run queue lengths.
CPU utilization (ut)
The ut index measures CPU utilization, which is the percentage of time spent running
system and user code. A host with no process running has a
ut value of 0 percent; a host
on which the CPU is completely loaded has a
ut of 100 percent.
Paging rate (pg)
The pg index gives the virtual memory paging rate in pages per second. This index is
closely tied to the amount of available RAM memory and the total size of the processes
running on a host; if there is not enough RAM to satisfy all processes, the paging rate
will be high. Paging rate is a good measure of how a machine will respond to interactive
use; a machine that is paging heavily feels very slow.
Login sessions (ls)
The ls index gives the number of users logged in. Each user is counted once, no matter
how many times they have logged into the host.
Interactive idle time (it)
On UNIX, the it index is the interactive idle time of the host, in minutes. Idle time is
measured from the last input or output on a directly attached terminal or a network
pseudo-terminal supporting a login session. This does not include activity directly
through the X server such as CAD applications or
emacs windows, except on Solaris
and HP-UX systems.
On Windows, the
it index is based on the time a screen saver has been active on a
particular host.
Temporary directories (tmp)
The tmp index is the space available in MB on the file system that contains the
temporary directory: