Re: [zones-discuss] Will exclusive IP allow for TCP /etc/system settings?
Jim Nissen wrote: > James, > No, asking simply because the Solaris tunables guide list both those TCP > settings that are changed via ndd and other that are /etc/system. > Customer's asking me if exclusive IP will allow for a NGZ to have its > own /etc/system TCP tunables, or if they are global. > > I think Steffen addressed this. I was going to include this reference in my previous response... http://docs.sun.com/app/docs/doc/817-0404/chapter1-1?a=view A lot of things that used to be in /etc/system are no longer there since 1. it does no syntax checking 2. it applies to the whole system 3. it requires a reboot to take effect So I think the answer is still that you do general IP stack tuning on the zone that "owns" the stack--the global zone for share IP Instances, and the individual non-global zone(s) for exclusive IP Instances. Things you still may tune in /etc/system affect drivers, and some things such as ip_squeue_fanout. I suspect the list of non-driver, non-NFS tunables via /etc/system is small. Steffen > > Thanks to all, > Jim > > James Carlson wrote: >> Jim Nissen writes: >> >>> Will Solaris 10 Zones, with exclusive IP, allow one to set NGZ TCP >>> tunables, like tcp_conn_req_max_q? >>> >> >> Yes, every zone configured as exclusive has its own TCP/IP stack >> instance. >> >> Are you asking because you've encountered some problem with this? >> >> > > > > ___ > zones-discuss mailing list > zones-discuss@opensolaris.org ___ zones-discuss mailing list zones-discuss@opensolaris.org
Re: [zones-discuss] Will exclusive IP allow for TCP /etc/system settings?
Jim Nissen writes: > No, asking simply because the Solaris tunables guide list both those TCP > settings that are changed via ndd and other that are /etc/system. > Customer's asking me if exclusive IP will allow for a NGZ to have its > own /etc/system TCP tunables, or if they are global. /etc/system is still global because there's still only one system kernel. That's the essence of zones. /etc/system and ndd are unrelated, which is what confused me here. Except for a few cases where there are "mirrored" bits (and likely things that are actually bugs), you can't set ndd variables in /etc/system, and you can't set /etc/system variables via ndd, and this is by design. /etc/system works by scribbling on top of kernel storage named by symbols in the object files. It's essentially equivalent to "/W" in mdb during the boot process -- you're writing directly to a variable, and perhaps even one that's declared "static" by the original author. ndd is more programmatic. It opens the named device node (e.g, /dev/tcp) and issues an undocumented ioctl. The driver (and any STREAMS modules in between) then gets the ioctl and can decide to do anything it wants with it. Sometimes, it sets a variable somewhere, or perhaps modifies multiple variables. Other ndd ioctls cause other functions to be called, locks to be taken, and other work done. Unlike /etc/system, the possibilities are endless. -- James Carlson, Solaris Networking <[EMAIL PROTECTED]> Sun Microsystems / 35 Network Drive71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677 ___ zones-discuss mailing list zones-discuss@opensolaris.org
Re: [zones-discuss] Will exclusive IP allow for TCP /etc/system settings?
James, No, asking simply because the Solaris tunables guide list both those TCP settings that are changed via ndd and other that are /etc/system. Customer's asking me if exclusive IP will allow for a NGZ to have its own /etc/system TCP tunables, or if they are global. I think Steffen addressed this. Thanks to all, Jim James Carlson wrote: Jim Nissen writes: Will Solaris 10 Zones, with exclusive IP, allow one to set NGZ TCP tunables, like tcp_conn_req_max_q? Yes, every zone configured as exclusive has its own TCP/IP stack instance. Are you asking because you've encountered some problem with this? ___ zones-discuss mailing list zones-discuss@opensolaris.org
Re: [zones-discuss] Will exclusive IP allow for TCP /etc/system settings?
Jim Nissen wrote: > Will Solaris 10 Zones, with exclusive IP, allow one to set NGZ TCP > tunables, like tcp_conn_req_max_q? ndd settings can be done in an exclusive IP Instance zone. while ndd is not a service, http://www.opensolaris.org/os/project/crossbow/faq/#ipinst_services /etc/system applies to the whole system (per your subject line) > ___ > zones-discuss mailing list > zones-discuss@opensolaris.org ___ zones-discuss mailing list zones-discuss@opensolaris.org
Re: [zones-discuss] Will exclusive IP allow for TCP /etc/system settings?
Jim Nissen writes: > Will Solaris 10 Zones, with exclusive IP, allow one to set NGZ TCP > tunables, like tcp_conn_req_max_q? Yes, every zone configured as exclusive has its own TCP/IP stack instance. Are you asking because you've encountered some problem with this? -- James Carlson, Solaris Networking <[EMAIL PROTECTED]> Sun Microsystems / 35 Network Drive71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677 ___ zones-discuss mailing list zones-discuss@opensolaris.org
[zones-discuss] Will exclusive IP allow for TCP /etc/system settings?
Will Solaris 10 Zones, with exclusive IP, allow one to set NGZ TCP tunables, like tcp_conn_req_max_q? ___ zones-discuss mailing list zones-discuss@opensolaris.org
