'Re: [driver-discuss] [networking-discuss] NICDRV test 15 - max'

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List:       opensolaris-driver-discuss
Subject:    Re: [driver-discuss] [networking-discuss] NICDRV test 15 - max
From:       Somnath kotur <somjk () yahoo ! com>
Date:       2009-12-24 7:29:54
Message-ID: 979575.1965.qm () web50506 ! mail ! re2 ! yahoo ! com
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Robin,
        I have attached the log file for the test fail below, from the netperf log \
dumps of the 2 systems, it seems that 20 sessions from both sides were running fine \
,so i am not sure why the MAXQ concluded that only 37 out of 40 sessions passed.Could \
you pls tell me what exactly is the error here?

Thanks
Somnath

--- On Thu, 12/24/09, Somnath kotur <somjk@yahoo.com> wrote:

From: Somnath kotur <somjk@yahoo.com>
Subject: Re: [networking-discuss] NICDRV test 15 - max sessions test
To: "tian robin luo" <Robin.Luo@Sun.COM>
Cc: networking-discuss@opensolaris.org, driver-discuss@opensolaris.org
Date: Thursday, December 24, 2009, 5:07 AM

Robin ,
          I just was rerunning the entire test suite again on the same system that \
passed the netstress ,only this time i am seeing similiar errors in test01 itself, as \
in for TCP traffic with 65000/1460 , only 36/38 sessions manage to connect while it \
works just fine for the rest of the suite ....? Can this be attributed to the same \
cause as below or is this something i need to worry about?

Thanks
Somnath

--- On Tue, 12/22/09, tian robin luo <Robin.Luo@Sun.COM> wrote:

From: tian robin luo <Robin.Luo@Sun.COM>
Subject: Re: NICDRV test 15 - max sessions test
To: "Somnath kotur" <somjk@yahoo.com>
Cc: dngireesh@gmail.com,
 networking-discuss@opensolaris.org, driver-discuss@opensolaris.org
Date: Tuesday, December 22, 2009, 7:51 AM

Somnath kotur:

  Hi Robin,

           I am trying out the 'netstress' test while testing my 10G
NIC Driver , while the 12 hr stress test passes and then moves on to
the 'max sessions test' it invariably ends up in a situtation where an
odd session fails to connect initially ... like the MAX results are
always 2997/29998 out of 3000 sessions:Failed ...

There have been instances where i have seen the same pass as well... .

I tried recreating the same testcase by hand, i.e start netservers on
both SUT and client , run start_netperf.sh with appropriate paramenters
(1500 sessions) from client  ,waited for a little while and then did
the other way around, ran start_netperf.sh from SUT ...

I got the following error msg 4 times :

netperf: data send error: Transport endpoint is not connected

i typed 'ps -A | grep netperf/netserve | wc -l ' on both the systems
and confirmed that the SUT was 4 netperf sessions short, I immediately
created 4 netperf sessions by hand with the same parameters as expected
in the test case and sure enough there were a total of 3K sessions
running and they all ran fine... Usually that's what seems to be
happening , there seems to some glitch while setting up the sessions
initially , but on trying it again ,they all seem to work just fine..

Is this really a bug in the driver that i need to look at or is this
something not too serious?

Thanks

Somnath

Hi, Somnath

    Yes, we've also encountered this small problem when testing 3000
sessions on 10G NIC, though everything is OK in 1G NIC driver. It seems
be a problem in netperf when creating multiple sessions. I suggest you
to use uperf to test it, it works well on a huge number of sessions, it
can be got from http://www.uperf.org/

    We are also working on change our test suite nicdrv from  based on
netperf to uperf.

    An workaround is to configure the DRIVER_SPEED variable to 10G in
the config.vars file. (The default value is 1G)

Thanks,

Robin

-----Inline Attachment Follows-----

_______________________________________________
networking-discuss mailing list
networking-discuss@opensolaris.org

[Attachment #5 (text/html)]

<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: \
inherit;">Robin, &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I have attached the \
log file for the test fail below, from the netperf log dumps of the 2 systems, it \
seems that 20 sessions from both sides were running fine ,so i am not sure why the \
MAXQ concluded that only 37 out of 40 sessions passed.Could you pls tell me what \
exactly is the error here? Thanks Somnath --- On Thu, 12/24/09, \
Somnath kotur &lt;somjk@yahoo.com&gt; wrote: <blockquote \
style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: \
5px;"> From: Somnath kotur &lt;somjk@yahoo.com&gt; Subject: Re: \
[networking-discuss] NICDRV test 15 - max sessions test To: "tian robin luo" \
&lt;Robin.Luo@Sun.COM&gt; Cc: networking-discuss@opensolaris.org, \
driver-discuss@opensolaris.org Date: Thursday, December 24, 2009, 5:07 \
AM <div id="yiv2083011862"><table border="0" cellpadding="0" \
cellspacing="0"><tbody><tr><td style="font-family: inherit; font-style: inherit; \
font-variant: inherit; font-weight: inherit; font-size: inherit; line-height: \
inherit; font-size-adjust: inherit; font-stretch: inherit;" valign="top">Robin \
, &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I just was rerunning the \
entire test suite again on the same system that passed the netstress ,only this time \
i am seeing similiar errors in test01 itself, as in for TCP traffic with 65000/1460 , \
only 36/38 sessions manage to connect while it works just fine for the rest of the \
suite ....? Can this be attributed to the same cause as below or is this something i \
need to worry about? Thanks Somnath --- On Tue, 12/22/09, tian \
robin luo &lt;Robin.Luo@Sun.COM&gt; wrote: <blockquote \
style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: \
5px;"> From: tian robin luo &lt;Robin.Luo@Sun.COM&gt; Subject: Re: NICDRV test \
15 - max sessions test To: "Somnath kotur" &lt;somjk@yahoo.com&gt; Cc: \
dngireesh@gmail.com, networking-discuss@opensolaris.org, \
driver-discuss@opensolaris.org Date: Tuesday, December 22, 2009, 7:51 \
AM <div id="yiv1434524999">

Somnath kotur:
<blockquote type="cite">
 <style type="text/css"></style> <div style="font-family: times new roman,new \
york,times,serif; font-size: 12pt;"> <div>Hi Robin, 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I am trying out the \
'netstress' test while testing my 10G NIC Driver , while the 12 hr stress test passes \
and then moves on to the 'max sessions test' it invariably ends up in a situtation \
where an odd session fails to connect initially ... like the MAX results are
always 2997/29998 out of 3000 sessions:Failed ... 
There have been instances where i have seen the same pass as well... . 
 
I tried recreating the same testcase by hand, i.e start netservers on
both SUT and client , run start_netperf.sh with appropriate paramenters
(1500 sessions) from client&nbsp; ,waited for a little while and then did
the other way around, ran start_netperf.sh from SUT ... 
I got the following error msg 4 times : 
 
netperf: data send error: Transport endpoint is not connected 
 
i typed 'ps -A | grep netperf/netserve | wc -l ' on both the systems
and confirmed that the SUT was 4 netperf sessions short, I immediately
created 4 netperf sessions by hand with the same parameters as expected
in the test case and sure enough there were a total of 3K sessions
running and they all ran fine... Usually that's what seems to be
happening , there seems to some glitch while setting up the sessions
initially , but on trying it again ,they all seem to work just fine.. 
 
Is this really a bug in the driver that i need to look at or is this
something not too serious? 
 
Thanks 
Somnath 
 </div>

</div>
 
</blockquote>
Hi, Somnath 
&nbsp;&nbsp;&nbsp; Yes, we've also encountered this small problem when testing 3000
sessions on 10G NIC, though everything is OK in 1G NIC driver. It seems
be a problem in netperf when creating multiple sessions. I suggest you
to use uperf to test it, it works well on a huge number of sessions, it
can be got from <a rel="nofollow" class="moz-txt-link-freetext" target="_blank" \
href="http://www.uperf.org/">http://www.uperf.org/</a> &nbsp;&nbsp;&nbsp; We are \
also working on change our test suite nicdrv from&nbsp; based on netperf to \
uperf. &nbsp;&nbsp;&nbsp; An workaround is to configure the DRIVER_SPEED variable \
to 10G in the config.vars file. (The default value is 1G) 
 
Thanks, 
Robin

</div></blockquote></td></tr></tbody></table><br>

      </div><br>-----Inline Attachment Follows-----<br><br><div \
class="plainMail">_______________________________________________<br>networking-discuss \
mailing list<br><a ymailto="mailto:networking-discuss@opensolaris.org" \
href="/mc/compose?to=networking-discuss@opensolaris.org">networking-discuss@opensolaris.org</a></div></blockquote></td></tr></table><br>

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