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Operating Systems Solaris Do I need to reboot Solaris 10 server for changes in /etc/systems ? Post 302174724 by jlliagre on Tuesday 11th of March 2008 10:34:02 PM
Old 03-11-2008
Quote:
Originally Posted by neel.gurjar
I asked this because in Linux we can change kernel parameters without rebooting servers. So I thought there may be some way to resolve this in Solaris 10.
Actually, you certainly can dynamically change kernel parameters under Solaris like you can do it with the Linux kernel. mdb is one of the tools used to do it.
Of course, some of the changes won't have any effect in these cases where the parameter is used only at boot time while changing some others will badly panic the machine.

As syncho already wrote, resource controls (projects) are a better way to tune the system.
 

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reboot(3C)																reboot(3C)

NAME
reboot - reboot system or halt processor SYNOPSIS
#include <sys/reboot.h> int reboot(int howto, char *bootargs); The reboot() function reboots the system. The howto argument specifies the behavior of the system while rebooting and is a mask con- structed by a bitwise-inclusive-OR of flags from the following list: RB_AUTOBOOT The machine is rebooted from the root filesystem on the default boot device. This is the default behavior. See boot(1M) and kernel(1M). RB_HALT The processor is simply halted; no reboot takes place. This option should be used with caution. RB_ASKNAME Interpreted by the bootstrap program and kernel, causing the user to be asked for pathnames during the bootstrap. RB_DUMP The system is forced to panic immediately without any further processing and a crash dump is written to the dump device (see dumpadm(1M)) before rebooting. Any other howto argument causes the kernel file to boot. The interpretation of the bootargs argument is platform-dependent. Upon successful completion, reboot() never returns. Otherwise, -1 is returned and errno is set to indicate the error. The reboot() function will fail if: EPERM The {PRIV_SYS_CONFIG} privilege is not asserted in the effective set of the calling process. intro(1M), boot(1M), dumpadm(1M), halt(1M), init(1M), kernel(1M), reboot(1M), uadmin(2) 22 Mar 2004 reboot(3C)
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