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Re: Mac OS X Jails
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Re: Mac OS X Jails


  • Subject: Re: Mac OS X Jails
  • From: Andrew Gallatin <email@hidden>
  • Date: Fri, 31 Jul 2009 10:26:52 -0400

Mo McRoberts wrote:
On Fri, Jul 31, 2009 at 15:05, Andrew Gallatin<email@hidden> wrote:
Mo McRoberts wrote:

jails are one of the relatively few features of FreeBSD that Darwin lacks.
Few!?!?  Just off the top of my head:

- TSO (Tcp Segmentation Offload)
- efficient (no copy) TCP sendfile support
- Multiple MSI-X interrupt vectors (enabling RSS)
- Multiple Transmit Queues per NIC
- 64-bit kernel
- Usable ZFS support
- Dtrace works on loadable kernel modules
- usable support for non-x86 / ppc arches
- Local Crashdumps & "mini-dumps"
- Linux binary compatibility
- User controllable CPU affinity for processes and IRQ vectors

That's not exactly a huge list. Out of curiosity… how many of those

It represents a huge amount of missing functionality that Darwin is missing, and most of other *nixes have.

were added to FreeBSD after 10.5 was released, and how many are likely

You seem to be under the (common) misconception that FreeBSD and Darwin share kernel code. For the most part, they do not. Implementing MSI-X support in Darwin would be totally different than in FreeBSD, for example.

> to appear in 10.6 (we know “64-bit kernel” definitely will, for a
> start)?

If I knew (which I do, since I'm an ADC member, and have been running
the 10.6 seeds) I could not tell you due to NDA.

Drew
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  • Follow-Ups:
    • Re: Mac OS X Jails
      • From: Mo McRoberts <email@hidden>
References: 
 >Re: Mac OS X Jails (From: Bill Northcott <email@hidden>)
 >Re: Mac OS X Jails (From: Mo McRoberts <email@hidden>)
 >Re: Mac OS X Jails (From: Andrew Gallatin <email@hidden>)
 >Re: Mac OS X Jails (From: Mo McRoberts <email@hidden>)

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