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From: Or Gerlitz <ogerlitz-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
To: Vladislav Bolkhovitin <vst-d+Crzxg7Rs0@public.gmane.org>
Cc: Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>,
	Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>,
	linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Mike Christie <michaelc-hcNo3dDEHLuVc3sceRu5cw@public.gmane.org>,
	Yaron Haviv <yaronh-smomgflXvOZWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH 0/8] ib/iser: major face lift of the data path code
Date: Sun, 07 Feb 2010 16:51:14 +0200	[thread overview]
Message-ID: <4B6ED362.2060909@Voltaire.com> (raw)
In-Reply-To: <4B6C0C93.2090107-d+Crzxg7Rs0@public.gmane.org>

Vladislav Bolkhovitin wrote:
> Or Gerlitz wrote:

> From where did you get those latency numbers?

read iostat(8), you'll see that await is "The average time (in milliseconds) 
for I/O requests issued to the device to be served"

> what kind of test did you do?

I connected a Linux box through iser to a target exposing four "NULL luns", 
i.e luns which are not backed by real storage. I run four copies of disktest
each over a different lun, where each was reading 1k blocks, etc. 

Or.


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  parent reply	other threads:[~2010-02-07 14:51 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-03 15:30 [PATCH 0/8] ib/iser: major face lift of the data path code Or Gerlitz
     [not found] ` <Pine.LNX.4.64.1002031721280.11944-aDiYczhfhVLdX2U7gxhm1tBPR1lH4CV8@public.gmane.org>
2010-02-03 15:31   ` [PATCH 01/9] ib/iser: revert commit bba7ebb "avoid recv buffer exhaustion" Or Gerlitz
2010-02-03 15:33   ` [PATCH 02/9] ib/iser: new recv buffer posting logic Or Gerlitz
2010-02-03 15:35   ` [PATCH 03/9] ib/iser: remove atomic counter for posted recv buffers Or Gerlitz
2010-02-03 15:36   ` [PATCH 04/9] ib/iser: use different CQ for send completions Or Gerlitz
2010-02-03 15:37   ` [PATCH 05/9] ib/iser: simplify send flow/descriptors Or Gerlitz
     [not found]     ` <Pine.LNX.4.64.1002031737090.11944-aDiYczhfhVLdX2U7gxhm1tBPR1lH4CV8@public.gmane.org>
2010-02-04 11:23       ` Or Gerlitz
2010-02-03 15:39   ` [PATCH 06/9] ib/iser: use atomic allocations Or Gerlitz
2010-02-03 15:40   ` [PATCH 07/9] ib/iser: remove unnecessary connection checks Or Gerlitz
2010-02-03 15:41   ` [PATCH 08/9] ib/iser: move to use libiscsi passthrough mode Or Gerlitz
     [not found]     ` <Pine.LNX.4.64.1002031740540.11944-aDiYczhfhVLdX2U7gxhm1tBPR1lH4CV8@public.gmane.org>
2010-02-03 21:32       ` Mike Christie
     [not found]         ` <4B69EB5A.4050301-hcNo3dDEHLuVc3sceRu5cw@public.gmane.org>
2010-02-04 11:21           ` Or Gerlitz
     [not found]             ` <4B6AADD4.2050607-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-02-04 17:27               ` Mike Christie
2010-02-03 15:42   ` [PATCH 08/10] ib/iser: remove redundant locking from command response flow Or Gerlitz
2010-02-03 15:44   ` [PATCH 09/9] remove redundant locking from iser scsi " Or Gerlitz
2010-02-03 16:10   ` [PATCH 0/8] ib/iser: major face lift of the data path code Bart Van Assche
2010-02-03 16:11   ` Bart Van Assche
     [not found]     ` <e2e108261002030811r5c740d6fr4cc055702a88aa50-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-04 14:21       ` Or Gerlitz
     [not found]         ` <4B6AD7D5.7030204-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-02-05 12:18           ` Vladislav Bolkhovitin
     [not found]             ` <4B6C0C93.2090107-d+Crzxg7Rs0@public.gmane.org>
2010-02-07 14:51               ` Or Gerlitz [this message]
2010-02-05 12:29           ` Vladislav Bolkhovitin

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