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Administering Platform LSF - SAS

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Load Indices<br />

Interactive idle time (it)<br />

Temporary directories (tmp)<br />

Swap space (swp)<br />

Memory (mem)<br />

I/O rate (io)<br />

On UNIX, the it index is the interactive idle time of the host, in minutes. Idle<br />

time is measured from the last input or output on a directly attached terminal<br />

or a network pseudo-terminal supporting a login session. This does not include<br />

activity directly through the X server such as CAD applications or emacs<br />

windows, except on Solaris and HP-UX systems.<br />

On Windows NT, the it index is based on the time a screen saver has been<br />

active on a particular host.<br />

The tmp index is the space available in MB on the file system that contains the<br />

temporary directory:<br />

◆ /tmp on UNIX<br />

◆ C:\temp on Windows NT<br />

The swp index gives the currently available virtual memory (swap space) in<br />

MB. This represents the largest process that can be started on the host.<br />

The mem index is an estimate of the real memory currently available to user<br />

processes. This represents the approximate size of the largest process that<br />

could be started on a host without causing the host to start paging.<br />

LIM reports the amount of free memory available. <strong>LSF</strong> calculates free memory<br />

as a sum of physical free memory, cached memory, buffered memory and an<br />

adjustment value. The command vmstat also reports free memory but displays<br />

these values separately. There may be a difference between the free memory<br />

reported by LIM and the free memory reported by vmstat because of virtual<br />

memory behavior variations among operating systems. You can write an ELIM<br />

that overrides the free memory values returned by LIM.<br />

The io index measures I/O throughput to disks attached directly to this host,<br />

in KB per second. It does not include I/O to disks that are mounted from other<br />

hosts.<br />

146<br />

<strong>Administering</strong> <strong>Platform</strong> <strong>LSF</strong>

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