On Fri, 22 Jan 2010 20:28:09 -0500 jhell <jh...@dataix.net> wrote:
> > On Wed, 20 Jan 2010 05:14, Alexander@ wrote: > > Quoting jhell <jh...@dataix.net> (from Tue, 19 Jan 2010 09:45:58 > > -0500): > > > >> On 1/19/2010 5:16 AM, Sherin George wrote: > >>> Thanks Ivan :) > >>> > >>> I found It. add following in /boot/loader.conf > >>> > >>> =================== > >>> vfs.zfs.arc_max="10244M" > >>> =================== > > > >> I just thought I would give a shout at this for stable/7 as of last > >> week. I am not sure if this is just me but I had tried to adjust > >> zfs_arc_max and found out that it was unadjusted to my value after > >> the system came back up. > >> > >> Anyone know if it is adjustable on a system with 1024MB of ram ? > >> Is this just being auto calculated by some other value ? > > > > Can you confirm that you made the modification > > in /boot/loader.conf, and that you used the double-quotes around > > the value as shown above? > > > > The code in 7-stable regarding this is the same as in 8-stable and > > 9-current, so if it is done correctly, it has to change accordingly. > Yes, > > The sysctl in question on my machine is/was put in loader.conf with > the double quotes. > > Every time I have set this before I was trying to set it to a value > >= 512M which with the values below must have not been excepted and > >fell back > to 320M. > > If I set this to a value of <= 511M it works fine which leads me to > believe this is limited by some other value listed below ? It can not be bigger than kmem_max. While I do not know if this is checked, it sounds from your description that it is. > dmesg: > real memory = 1072107520 (1022 MB) > avail memory = 1035038720 (987 MB) > > loader.conf: > kern.maxusers="512" << Not sure if this has anything to do It should influence the kmem_max... if you would not change it yourself. > with it. vfs.zfs.arc_min="80M" > vfs.zfs.arc_max="512M" << This fails. stays at 335544320. It needs to be a lot less than kmem_max (the arc is allocated from the kmem, as such it can not exceed kmem_max, and as other parts of the kernel also need kmem, you need to limit the arc size). On a 32bit system with 1 GB RAM I have kmem_size_max set to 512M and arc_max set to 160M. > vm.kmem_size="512M" > vm.kmem_size_max="512M" << Maybe this one. > kern.ipc.semmni="40" > kern.ipc.semmns="300" > kern.maxdsiz="536870912" > kern.maxfiles="16384" Bye, Alexander. _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
