Re: why we use two ObjectStore::Transaction in ReplicatedBackend::submit_transaction?

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On Sun, 1 Nov 2015, Sage Weil wrote:
> On Sun, 1 Nov 2015, ??? wrote:
> > Yes, I think so.
> > keeping them separate and pass them to
> > ObjectStore::queue_transactions() would increase the time on
> > transaction encode process and exhaust more cpu.
> > 
> > The transaction::append holds 0.8% cpu on my environment.
> > The transaction encoding is also really a bottleneck which process
> > holds 1.8% cpu on my environment.
> 
> Where is the append() caller you're looking at?  I'm not seeing it.

Oh, I see:  https://github.com/ceph/ceph/pull/6439

This makes sense to me.
sage

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