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From: Sagi Grimberg <sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
To: Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Or Gerlitz <gerlitz.or-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Bart Van Assche
	<bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>,
	"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: RFC: Immediate data support for SRP
Date: Tue, 21 Jul 2015 12:25:02 +0300	[thread overview]
Message-ID: <55AE0FEE.7060500@dev.mellanox.co.il> (raw)
In-Reply-To: <55AD133D.2040204-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>


>
> So you have 140% better IOPS with immediate-data vs. non immediate
> data?! numberz?

No, the improvement was to avoid memory copy from the pre-posted recieve
buffer (with immediate-data) to an allocated buffer. Instead the receive
buffer is handed to the backend to do IO.

This shows up to 40% improvement (vs. immediate data with copy on the
target side).

I'll post numbers with the patches.

Sagi.
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  parent reply	other threads:[~2015-07-21  9:25 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-16 15:25 RFC: Immediate data support for SRP Bart Van Assche
     [not found] ` <55A7CCF1.3080201-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2015-07-19 16:07   ` Sagi Grimberg
     [not found]     ` <CACaajQu9QBo7robmrFF7hev-xS=c3VD9qQTn5DKuuObk5aU_Kg@mail.gmail.com>
     [not found]       ` <CACaajQu9QBo7robmrFF7hev-xS=c3VD9qQTn5DKuuObk5aU_Kg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-07-20 23:49         ` Bart Van Assche
     [not found]     ` <55ABCB34.1000506-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-19 21:43       ` Or Gerlitz
     [not found]         ` <CAJ3xEMiz=n_uP9TQ6YsGN+omzsN3Zrz5skDEq00+fE188z0erA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-07-20  9:44           ` Sagi Grimberg
     [not found]             ` <55ACC2FA.8030202-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-20 15:26               ` Or Gerlitz
     [not found]                 ` <55AD133D.2040204-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-07-21  9:25                   ` Sagi Grimberg [this message]
2015-07-21  0:03       ` Bart Van Assche
     [not found]         ` <55AD8C3A.9070403-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2015-07-21  9:17           ` Sagi Grimberg
     [not found]             ` <55AE0E30.40404-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-21 15:35               ` Bart Van Assche

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