RE: ms_crc_data false

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> -----Original Message-----
> From: Sage Weil [mailto:sage@xxxxxxxxxxxx]
> Sent: Wednesday, April 08, 2015 5:40 PM
> To: Deneau, Tom
> Cc: ceph-devel
> Subject: Re: ms_crc_data false
> 
> On Wed, 8 Apr 2015, Deneau, Tom wrote:
> > With 0.93, I tried
> >     ceph tell 'osd.*' injectargs '--ms_crc_data=false' '--
> ms_crc_header=false'
> >
> > and saw the changes reflected in ceph admin-daemon
> >
> > But having done that, perf top still shows time being spent in crc32
> routines.
> > Is there some other parameter that needs changing?
> 
> The osd still does a CRC for the purposes of write journaling.  This can't be
> disabled currently.  You shouldn't see this come up on reads...
> 
> sage

Hmm, I am doing rados bench seq so only reads.

Is this in 0.93 or do I need 0.94?

-- Tom
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