Re: Reality check? compat.ia32.maxdsiz in jailed "32-bit" environment
Tom Evans <[email protected]> Mon, 4 Nov 2013 16:23:34 +0000
| Newsgroups | gmane.os.freebsd.performance |
|---|---|
| Message-ID | <CAFHbX1+TSrPJBkaHTdi7QbB-vKQqwU3W_cYwD2PCuc+OrN-+3g@mail.gmail.com> |
On Mon, Nov 4, 2013 at 3:49 PM, David Wolfskill <[email protected]> wrote: > I am supporting a performance-sensitive software development > environment that: > … > I have (also) started experimenting with increasing compat.ia32.maxdsiz > beyond its default of 512MB: Initially, I kicked it to 2GB; more > recently, I tried setting it to 3GB. > > While I have not noticed any negative issues from either of the above > non-default settings, I have done but limited testing with concurrent > software builds in my test environment. IIRC, when running on pure i386, setting kern.maxdsiz limits the amount of kernel address space (or rather, dsize+KVA = 4 GB), and so you had to be careful when increasing kern.maxdsiz. This probably has no effect on a i386 on amd64 jail though. Cheers Tom _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[email protected]"