Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!ucbvax!PAN.SSEC.HONEYWELL.COM!thompson From: thompson@PAN.SSEC.HONEYWELL.COM (John Thompson) Newsgroups: comp.sys.apollo Subject: re: How to modify the "kernel'? Message-ID: <9009061916.AA08595@pan.ssec.honeywell.com> Date: 6 Sep 90 19:16:06 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 60 > <> > This is driving crazy..... how does one configure the "kernel" on an > Apollo? I need to raise the max number of processes on a machine. As has been noted -- you don't. Instead, wait for sr10.3. This is from the beta3 release notes for sr10.3 -- | 1.8.1 Increased Number of User Processes | | We have enhanced the operating system to include an increased number | of user processes. The new maximum number depends on the type of node | and the available physical memory. Note, however, that older systems | with 68010-based processors are still limited to 64 processes. The | following table indicates the maximum number of processes for the | various node types: | | Software Release 10.3 | | Node Type Maximum Processes | | Next Generation Workstations 64 | DN300/320/330 64 | DN550/560/570/580 64 | DSP80/80A/90 64 | DN460/660 256 | DN570T/580T/590T 256 | DN3000 (with DMMU) 128 | DN3010 (with PMMU) 256 | DN2500/3500/4000/4500 1024 | DN10000 1024 | | On most node types, available resources (disk space and physical | memory) limit the number of processes that can be used effectively. | | .... | | Nodes that have 4 MB or less of physical memory are limited to 64 | processes. Motorola nodes that have more than 4 MB of memory (and sup- | port more than 64 processes) have a maximum number of processes | equivalent to 32 times the MB size. DN10000 nodes have a maximum | number of processes equivalent to 16 times the MB size. For example, | a DN4000 with 32 MB of memory can have 1024 processes (32 x 32). How- | ever, there are still limitations.... A small number of processes is | capable of saturating either the CPU or disk. The number of processes | is no longer the limiting resource on a node. I have been assured privately that the "Next Generation Workstations" (the 9000 series 400) limit is erroneous, and should be just like the DN2500 et. al. If that is not the case, we're going to take our machines and shove them in a very uncomfortable location. :-) note that the old clunker machines will still be limited to 64 processes, however. John Thompson (jt) Honeywell, SSEC Plymouth, MN 55441 thompson@pan.ssec.honeywell.com As ever, my opinions do not necessarily agree with Honeywell's or reality's. (Honeywell's do not necessarily agree with mine or reality's, either)