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Date: Thu, 7 Apr 2016 16:32:50 +0300
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Edward Tomasz Napierala <trasz@FreeBSD.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: Re: svn commit: r297633 - in head:
 sys/cddl/contrib/opensolaris/uts/common/fs/zfs sys/fs/ext2fs sys/kern
 sys/sys sys/ufs/ffs sys/ufs/ufs sys/vm usr.bin/rctl
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On Thu, Apr 07, 2016 at 04:23:25AM +0000, Edward Tomasz Napierala wrote:

> Author: trasz
> Date: Thu Apr  7 04:23:25 2016
> New Revision: 297633
> URL: https://svnweb.freebsd.org/changeset/base/297633
> 
> Log:
>   Add four new RCTL resources - readbps, readiops, writebps and writeiops,
>   for limiting disk (actually filesystem) IO.
>   
>   Note that in some cases these limits are not quite precise. It's ok,
>   as long as it's within some reasonable bounds.
>   
>   Testing - and review of the code, in particular the VFS and VM parts - is
>   very welcome.

How you calculate iops for sequential IOs? As distinc IOPS or merged?

I.e. readin 1 sector from offset 100 and immediately reading 1 sectro
from offset 101 accounting as 2IOPS or as 1IOPS?

>   MFC after:	1 month