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From: John Baldwin <jhb@freebsd.org>
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
Subject: Re: svn commit: r270759 - in head/sys: cddl/compat/opensolaris/kern
 cddl/compat/opensolaris/sys cddl/contrib/opensolaris/uts/common/fs/zfs vm
Date: Mon, 08 Sep 2014 11:17:51 -0400
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On Sunday, September 07, 2014 04:56:49 PM Slawa Olhovchenkov wrote:
> PS: very bad that 'data limit' don't anymore reflect application
> memory consumer. and very small application can adapt to 'no memory'
> from system.

You can use RLIMIT_AS instead of RLIMIT_DATA.  jemalloc can also be configured 
to use sbrk(), though I think there's no way to prevent it from falling back 
to mmap(MAP_ANON) if sbrk() fails.

-- 
John Baldwin