02-09-2002
Well there's not much to say. maxssiz is the maximum size of the stack (which is a separate segment). maxdsiz is the maximum size of the data seqment. And even though you didn't ask, maxtsiz is the maximum size of the text segment.
I would strongly suggest that you sam to increase them. sam->kernel configuation->configurable parameters will get you there. It is possible to do this from the command line, but it's a tedious. poorly automated process with lots of opportunities to make fatal mistakes.
On HP-UX, swapon is the command to add a swap area. And swapinfo is the command to see how much swap is being used.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi all
How to change the system parameter (kernel Parameter)
in sun solaris..i wan't to increase the maximum no of user processs.i found it frm sysdef command that it has a value of 3048
i wan't to increase it as smtime while forking a new proceess it,s giving error max limit of user process... (1 Reply)
Discussion started by: Prafulla
1 Replies
2. UNIX for Dummies Questions & Answers
Hello All,
can someone clarify finally what are the kernel parameter settings
for ORACLE9i on SOLARIS9 ?
the following first part is copy paste from the sun's web... (2 Replies)
Discussion started by: grep
2 Replies
3. UNIX for Dummies Questions & Answers
Hello and thank you everyone that has helped guide me in the past.
I need to change the max_thread_proc parameter in order for certain Oracle utilities to function correctly. It is currently set at 64.
I am a dba not an sa so please excuse my lack of knowledge on something that is probably... (7 Replies)
Discussion started by: soestx
7 Replies
4. UNIX for Dummies Questions & Answers
Hello everbody:
I have Sol9, and I need to check its kernekl parameters, do you know how to list them or in which file they can be found.
Thanks in Advance (3 Replies)
Discussion started by: aladdin
3 Replies
5. UNIX for Advanced & Expert Users
Can anyone reference me where I can find info
or if someone knows the mapping of Solaris kernel parameters to HP-UX 11i v2 O/S on Integrity server?
Your response would be greatly appreciated.
Thanks.
-Lou :) (1 Reply)
Discussion started by: nylou97
1 Replies
6. HP-UX
Hi,
May I pls. know what would be the equivalent kernel parameter in HP-UX for the below Linux kernel parameter.
sysctl kern.ps_showallprocs - This setting in Linux would let users see their own processes in "ps".
Thanks,
Narasimha (1 Reply)
Discussion started by: vnarsim
1 Replies
7. UNIX for Dummies Questions & Answers
Hi All
Need to find kernel parameter values of our UNIX box.
/filesys1/tmp>uname -a
HP-UX hps1_dc B.11.11 U 9000/800 1681349356 unlimited-user license
/filesys1/CDBLprodrun/tmp>
Can anyone help me with the cmd to find kernel parameter values?
Thanks in advance. (1 Reply)
Discussion started by: mhbd
1 Replies
8. HP-UX
Hi.
I wanted to know, that if an issue is coming, where ,on running a load test, the memory of the APP server(unix) increases, but does not come down once the test is over, in that case, does tuning the nk thread paramter help in teleasing of the memory..???
plz answer soon (2 Replies)
Discussion started by: TC123
2 Replies
9. Solaris
Hi,
How can I change the Kernel parameter MAXDSIZE??:confused::confused:
Thanks in Advance ... (1 Reply)
Discussion started by: smartgupta
1 Replies
10. Solaris
Hi gurus
Could anybody tell me that what are the kernal parameter of network interface in solaris
Regards (3 Replies)
Discussion started by: girish.batra
3 Replies
RAM(4) Kernel Interfaces Manual RAM(4)
NAME
ram - ram disk driver
SYNOPSIS
/sys/conf/SYSTEM:
NRAM ram_size # RAM disk size (512-byte blocks)
major device number(s):
block: 3
minor device encoding:
must be zero (0)
DESCRIPTION
The ram pseudo-device provides a very fast extended memory store. It's use is intended for file systems like /tmp and applications which
need to access a reasonably large amount of data quickly.
The amount of memory dedicated to the ram device is controlled by the NRAM definition in units of 512-byte blocks. This is also patchable
in the system binary through the variable ram_size (though a patched system would have to be rebooted before any change took effect; see
adb(1)). This makes it easy to test the effects of different ram disk sizes on system performance. It's important to note that any space
given to the ram device is permanently allocated at system boot time. Dedicating too much memory can adversely affect system performance
by forcing the system to swap heavily as in a memory poor environment.
The block file accesses the ram disk via the system's buffering mechanism through a buffer sharing arrangement with the buffer cache. It
may be read and written without regard to physical disk records. There is no `raw' interface since no speed advantage is gained by such an
interface with the ram disk.
DISK SUPPORT
The ram driver does not support pseudo-disks (partitions). The special files refer to the entire `drive' as a single sequentially
addressed file.
A typical use for the ram disk would be to mount /tmp on it. Note that if this arrangement is recorded in /etc/fstab then /etc/rc will
have to be modified slightly to do a mkfs(8) on the ram disk before the standard file system checks are done.
FILES
/dev/ram block file
/dev/MAKEDEV script to create special files
/dev/MAKEDEV.local script to localize special files
SEE ALSO
hk(4), ra(4), rl(4), rk(4), rp(4), rx(4), si(4), xp(4) dtab(5), autoconfig(8)
DIAGNOSTICS
ram: no space. There is not enough memory to allocate the space needed by the ram disk. The ram disk is disabled. Any attempts to access
it will return an error.
ram: not allocated. No memory was allocated to the ram disk and an attempt was made to open it. Either not enough memory was available at
boot time or the kernel variable ram_size was set to zero.
BUGS
The ram driver is only available under 2.11BSD.
3rd Berkeley Distribution Januray 27, 1996 RAM(4)