On Jan 23, 2010, at 12:09 PM, Bruno Damour wrote: > On 01/23/10 07:03 PM, Thomas Burgess wrote: >> I'm new to opensolaris, and i'm really loving it so far. >> >> naturally, i'd like to try running XEN on my box. This box is mainly a NAS, >> but i can't get rtorrent installed, so i'm hoping XEN will be the answer. >> I'm reading some of the documentation of it and it's saying i need to lower >> my arc, i'm wondering how much? >> >> I only plan on running a single domU and i only plan on running a small >> webserver in that with rtorrent. >> >> I have an intel q9550 cpu with VT-d enabled, and 8 gb of ddr2 ECC ram >> >> I don't see any guidelines for how much to limit arc, just this: >> set zfs:zfs_arc_max = 0x10000000 >> >> >> That seems quite low.....does it really need to be this low? >> > It depends on how much ram you have and how many VMs with how many mem ! > Anyway I'm not quite sure this is still necessary since the default now > limits dom0_mem to 2048K or 1/2 the system mem and I understood, > arc_cache_mem to 3/4 of this value... > Bruno > > PS I keep it at 0x20000000 for my system with 8192M mem, dom0 6144M and 1 VM > 2048M > _______________________________________________ > xen-discuss mailing list > [email protected]
Here are the steps I followed on my systems.. with 64GB of ram. http://wikis.sun.com/display/OpenIT/Prepare+physical+machines+to+be+xVM+dom0 ... but I just noticed I missed that step on my documentation, d'oh! .. here is the lines from /etc/system * ZFS Tuning for XEN (1.5G) set zfs:zfs_arc_max = 0x60000000 _______________________________________________ xen-discuss mailing list [email protected]
