Cray User Group Directory of User-submitted Software

Title Sc
Revision
Purpose Swap Count - Real time swapping monitor
Package type program
Application area operating system
Abstract The Swap Count utility program reads from the proc table information about processes running on the system. Included is their size, whether connected to a tty, process id, whether in core or swapped, the number of times the processes has swapped during its lifetime, CPU seconds used, and the processes current itime - the number of seconds since the last interactive input. Sc is useful in detecting whether swapping is the source of poor interactive response.
Submittor Bob Ciotti
Contact Bob Ciotti
Phone (415)604-4408
Email ciotti@nas.nasa.gov
Company/
Institution
Numerical Aerodynamic Simulation - NASA Ames Research Ctr
CUG Site Code
Distribution method Documentation Librarian
M/S N258-6
NASA Ames Research Center
Moffett Field, CA, 95035-1000
Email: doc-center@nas.nasa.gov
Phone: (415)604-4632
URL
Distribution restrictions US sites only
Copyright NASA Development Software - not for export from US
License required no
License fee n.a.
Hardware Y-MP
Operating System UNICOS 6.0
Compiler(s) scc
Program support when schedule permits
Documentation man pages
Portability to other UNIX systems Not Portable
Additional comments Sc is useful for determining whether swapping is the cause of poor interactive response. The itime/smallproc scheduler mod (information listed in CUGDUS) was written as a result of what this utility told us about how our system was behaving - that being the scheduler prejudicially swapping out small interactive processes. There is a problem in tracking down the socket daemon for which your process is associated, which may be the source of your interactive response problems. The rlogind/telnetd pid is going to be very close to your login shell pid though.

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Last update: July 7, 1999