Thanks for your help, Comments below ...
On 9/2/08, Jeff Victor <[EMAIL PROTECTED]> wrote: > > Hello Vincent, > > From your message, it appears that you do not need to use capped-cpu. > However, if you find that you have a need to use both, it will work, > although there is potential to confuse Solaris and/or yourself. For > example, what happens if you set cpu-shares so that a zone must get at > least 25% of 4 cores, but capped-cpu=0.5? Further, setting a CPU cap > can prevent a zone from using CPU cycles that are otherwise unused. > Why waste your expensive CPU? > > You do want to ensure that each zone gets enough processing cycles to > accomplish its tasks. This can be achieved with cpu-shares. You might > start by setting cpu-shares to 100 for the global zone, and 10 for > each of the non-global zones. If you find that the system is > frequently experiencing CPU contention, and one zone isn't getting > enough CPU time, just increase that zone's share quantity. > > You might want to give the VOIP zone 50 shares instead of 10 because > of the sensitivity to computational latency. Is the VOIP software > multi-threaded? If not, then it will never use more than 25-30% of the > CPU power of the system in any situation. How long does the system take to adjust when there is a contention? Is it noticeable ? However, I will follow your advice and experiment ... It is important that the global zone gets all it needs. Otherwise you > may interfere with proper operation of key infrastructure components > like the paging daemon. I have noticed that prctl show 2 types for the cpu-shares: privileged (the one we set) and system (always max value ie 65K). What's the difference ? Also, docs.sun.com says: > "The capped-cpu resource and the dedicated-cpu resource are > incompatible. The cpu-shares rctl and the dedicated-cpu resource are > incompatible." thanks again for your help, Vincent On Tue, Sep 2, 2008 at 1:38 PM, Vincent Boisard <[EMAIL PROTECTED]> wrote: > > hello, > > > > I am currently setting up a home server. It will be my main storage > server, > > but I will also be consolidating other applications on it (voip server, > > video streaming, app server, ...) > > I plan to use a Quad-core processor (namely the Q6600) with 8GB of RAM. > > > > I have been reading all the docs I can find about resource management but > > there are still some areas unclear to me: > > > > - Can capped-cpu and cpu-share be used at the same time: It there is no > > contention Z1 use only 3 cpu and Z2 3 cpus max, but if there is > contention > > have 75/25% sharing? > > > > - What is ZFS cpu usage ? (How much cpu should I reserve for the global > zone > > ?) > > > > More specifically, my setup would be something like: > > > > Global zone: ZFS storage, NFS and Samba servers > > VOIP Zone: SIP PBX : should always have enough processing > > power to handle a few calls (home setup) > > download zone: handles all downloads (torrent /http). Low > > priority. > > Video streaming zone : use VLC to stream videos on the network (maybe > later > > some VOD). > > Video encoding zone : should use all available cpus but low priority > > Database Zone: MySQl and/or Postgresql > > App Server Zone: SAMP stack and/or Glassfish > > > > I do not expect high load on these zones (this is not a business > production > > server, mainly a development environment and home application with few > > concurrent calls). > > > > I am a bit at a loss on how to implement this. > > Is FSS and cpu-shares enough ? > > Should I use resource pools ? dynamic resource pools ? > > > > Thanks for your help, > > > > Vincent > > > > > _______________________________________________ > > zones-discuss mailing list > > zones-discuss@opensolaris.org > > > > > > > -- > --JeffV >
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