Open System Services Management and Operations Guide (G06.27+, H06.04+)

Environment Limits
Open System Services Management and Operations Guide—527191-003
E-2
OSS
processes
per node
Approximately
29,000
Prior to RVU G06.19 (prior to
SPR T9050AOU), the limit was
approximately 16,000.
At an OSS shell prompt:
ps -lA
lists active and zombie
processes.
OSS
processes
per
processor
Approximately
4,000 for
S-series
servers
Approximately
8,000 for
NS-series
servers
The limiting factor is the
number of possible process
control blocks (PCBs) per
processor:
For RVUs G06.00 through
G06.07, the limit was
approximately 1,800.
For RVUs G06.08 through
G06.18 (prior to SPR
T9050AOU), the limit was
approximately 2,200.
At a TACL prompt, use
PEEK.
OSS file
opens per
process,
without
using the
select()
function to
manage I/O
4,500
OSS file
opens per
application
process,
using the
select()
function to
manage I/O
1,024
4,096
Prior to RVU G06.26 (prior to
NPV T9055 G12), the limit was
1,024.
OSS file
opens per
terminal
process,
when using
the
select()
function and
nonblocking
terminal I/O
1 The OSS terminal helper
process only accepts one open
per terminal process
Table E-1. OSS Environment Limits (page 2 of 4)
Description
Maximum
Value Comment
To Check Amount
Currently Used