Open System Services Management and Operations Guide (G06.25+, H06.03+)

Environment Limits
Open System Services Management and Operations Guide—527191-002
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
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
process,
using the
select()
function to
manage I/O
1,024
OSS file
opens per
processor
Approximately
12,000
Limiting resource is OSS
POSIX extended segment
(PXS) memory.
Prior to SPR T8620ABT, the
limit was approximately 7,750.
Usage can be checked
with Measure by looking
at the OSSCPU entity; at
a MEASCOM prompt:
ADD OSSCPU *
START MEASUREMENT
mymeas
STOP MEASUREMENT
mymeas
LIST OSSCPU *
Table E-1. OSS Environment Limits (page 2 of 4)
Description
Maximum
Value Comment
To Check Amount
Currently Used