On Sat, 2007-04-07 at 18:53 +0100, Dave Ewart wrote: > On Saturday, 07.04.2007 at 12:08 -0400, Greg Folkert wrote: > > > On Sat, 2007-04-07 at 16:06 +0100, Dave Ewart wrote: > > > On Friday, 06.04.2007 at 15:39 -0700, Francesco Pietra wrote: > > > > > > > 1) How to set shmmax in debian? > > > > > > For the running kernel, echo a value to /proc/sys/kernel/shmmax - to > > > make it a permanent setting (i.e. set automatically at subsequent > > > reboots), include the setting in /etc/sysctl.conf: > > > > > > kernel.shmmax=whatever > > > > Umm, shmmax is auto-adjusted now in the 2.6 kernel. This is not the > > real reason he is having difficulty. > > Hmm, since which kernel version, out of interest? > > The reason I ask is that I found it necessary to set SHMMAX for an AMD64 > Sarge machine with 16GB RAM running as a PostgreSQL database server and > improved performance significantly as a result. For compatability > reasons with the hardware, I couldn't use the most recent kernel: it's > running 2.6.12.
See my other reply to Francesco, I went through the Kernel Docs and the code... discovered it is auto-set at boot, but changeable. There was some serious work being dome on these parameters being auto-adjusting, but I see that it is not in any of the VM or semaphore controls, using the defaults engines. -- greg, [EMAIL PROTECTED] Novell's Directory Services is a competitive product to Microsoft's Active Directory in much the same way that the Saturn V is a competitive product to those dinky little model rockets that kids light off down at the playfield. -- Thane Walkup -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
