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Operating Systems Solaris Questions regarding CPU cores vs rctl limit Post 303034890 by Peasant on Thursday 9th of May 2019 01:25:48 AM
Old 05-09-2019
No. You will need to create a pset with wanted cpu cores and alocate that to specific zone or zones to compliant as far as i recall.

Lets say for simplicity you have 10 zones, 1 global zone and 9 zones
9 zones have 1 vcpu share (including global), while 1 zone has 2 vcpu share.

This means that in only in the case of cpu pressure, say 100%, kernel will guarantee each zone 10% of resources (1 cpu share) and one zone (2 cpu shares) will get 20% of cpu resources.
Not cores per se, but compute power using FSS scheduler.

For instance, all zones are mostly idle using total of 10% cpu, any zone will able to use rest of cpu time, as long there is no competition for cpu time.
Only under cpu pressure the scheduler will kick in to alocate time per ratio (1:1:1:1:1:1:1:1:1:2 = 100) to ensure quality of service per shares configuration.

When using psets allocated to zones, a zone will have dedicated cores defined in pset and no other zone will able to use those cores.
And you will be compliant as oracle hard partition, if that didn't change in the meantime...

Hope that helps.
Regards
Peasant.
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brands(5)						Standards, Environments, and Macros						 brands(5)

NAME
brands - alternate operating environments for non-global zones DESCRIPTION
The branded zone (BrandZ) framework extends the Solaris Zones infrastructure described in zones(5) to include the creation of brands, which provide non-global zones that contain non-native operating environments. The term "brand" can refer to a wide range of operating environments. All brand management is performed as extensions to the current zones structure. Every zone is configured with an associated brand. The brand type is used to determine which scripts are executed when a zone is installed and booted. In addition, a zone's brand is used to properly identify the correct application type at application launch time. The default is the native brand. A branded zone will support exactly one brand of non-native binary, which means that a branded zone provides a single operating environ- ment. Once a zone has been assigned a brand, that brand cannot be changed or removed. BrandZ extends the zones tools in the following ways: o A brand is an attribute of a zone, set at zone create time. o The zonecfg tool (see zonecfg(1M)) is used to set a zone's brand type and configure the zone. o The zoneadm tool (see zoneadm(1M)) is used to report a zone's brand type and administer the zone. Device Support The devices supported by each zone are documented in the man pages and other documentation for that brand. The zones infrastructure detects any attempt to add an unsupported device and issues a warning to the administrator. If the administrator chooses to add an unsupported device despite that warning, that device might or might not work as expected. The configuration will be untested and unsupported. ATTRIBUTES
See attributes(5) for a description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWzoneu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
mdb(1), zlogin(1), zonename(1), dtrace(1M), in.rlogind(1M), sshd(1M), zoneadm(1M), zonecfg(1M), kill(2), priocntl(2), getzoneid(3C), ucred_get(3C), getzoneid(3C), proc(4), attributes(5), lx(5), native(5), privileges(5), zones(5), lx_systrace(7D), crgetzoneid(9F) SunOS 5.11 13 Feb 2009 brands(5)
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