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<p>just execute => dladm create-etherstub Backend_Switch0</p>
<p><br>
</p>
<p>and having => Backend_Switch0 etherstub 9000 up<br>
</p>
<br>
<div class="moz-cite-prefix">On 14-09-17 18:26, Ian Kaufman wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPJtH1iYYZiJjptT3G_LWpR63P480YwObAdO+ZVyMSc=8n+L7g@mail.gmail.com">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<div dir="ltr">Networking has always used *bps - that's been the
standard for many years. Megabits, Gigabits ...
<div><br>
</div>
<div>Disk tools have always measured in bytes since that is how
the capacity is defined.</div>
<div><br>
</div>
<div>How did you create your etherstub? I know you can set a
maxbw (maximum bandiwdth), but I don't know what the default
behavior is.</div>
<div><br>
</div>
<div>Ian<br>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Sep 14, 2017 at 9:13 AM, Dirk
Willems <span dir="ltr"><<a
href="mailto:dirk.willems@exitas.be" target="_blank"
moz-do-not-send="true">dirk.willems@exitas.be</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>Thank you all, the water is already clearing up :)</p>
<p><br>
</p>
<p>So infiniband is 40 Gbps an not 40GB/s, very confusing
GB/s Gbps why they not take a standaard and set
everything in GB/s or MB/s ?</p>
<p>A lot of people make a lot of mistakes between them, me
too ... <br>
</p>
<p> If it is 40 Gbps a factor of 8 then we theoretical
have max 5 GB/s throughput.<br>
</p>
<p>Little difference 40 or 5 :) </p>
<p>So Ian you have the full blow with 36Gbps very cool
looks more like it :)</p>
<p>Did I play with the frame size, not really sure what
you mean by that sorry but I think its default on 9000</p>
<p>Backend_Switch0 etherstub 9000 up <br>
</p>
<p><br>
</p>
<p>Do understand that if we use UDP streams from process
to process it will be much quicker over the etherstub
gonna need more test to do.</p>
<p>We used for a customer Mbuffer with zfs send over Lan
that is also very quick sometimes I also use it at my
home very good prog.</p>
<p>But still do not understand how it is that I copy from
1 NGZ with 100MB/s, I receive on the other NGZ 250MB/s
very strange ?</p>
<p><br>
</p>
<p>the command dlstat difference between OmniOSce and
Solaris ?<br>
</p>
<p>RBYTES => receiving</p>
<p>OBYTES => sending<br>
</p>
<span class="">
<p>root@test2:~# dlstat -i 2<br>
><br>
> LINK IPKTS RBYTES OPKTS OBYTES<br>
> net1 25.76K 185.14M 10.08K 2.62M<br>
> net1 27.04K 187.16M 11.23K
3.22M</p>
<p><br>
</p>
<p><br>
</p>
</span>
<p>BYTES => receiving and sending ?</p>
<p>But then still if the copy is not running I have 0 so
doesn't explain why I see 216 MB where come the rest of
the 116 MB from is it compression ?<br>
</p>
<span class="">
<p>root@NGINX:/root# dlstat show-link NGINX1 -i 2<br>
><br>
> LINK TYPE ID INDEX PKTS BYTES<br>
> NGINX1 rx bcast -- 0
0<br>
> NGINX1 rx sw -- 0
0<br>
> NGINX1 tx bcast -- 0
0<br>
> NGINX1 tx sw -- 9.26K
692.00K<br>
> NGINX1 rx local -- 26.00K
216.32M</p>
<p><br>
</p>
</span>
<p>Thank you all for your feedback much appreciations !<br>
</p>
<p><br>
</p>
<p>Kind Regards,</p>
<p><br>
</p>
<p>Dirk<br>
</p>
<div>
<div class="h5">
<p><br>
</p>
<br>
<div class="m_-348233399284751032moz-cite-prefix">On
14-09-17 17:07, Ian Kaufman wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Some other things you need to take
into account:
<div><br>
</div>
<div>QDR Infiniband is 40Gbps, not 40GB/s. That is
a factor of 8 difference. That is also a
theoretical maximum throughput, there is some
overhead. In reality, you will never see
40Gbps. </div>
<div><br>
</div>
<div>My system tested out at 6Gbps - 8Gbps using
NFS over IPoIB, with DDR (20Gbps) nodes and a
QDR (40Gbps) storage server. IPoIB drops the
theoretical max rates to 18Gbps and 36Gbps
respectively. </div>
<div><br>
</div>
<div>If you are getting 185MB/s, you are seeing
1.48Gbps. </div>
<div><br>
</div>
<div>Keep your B's and b's straight. Did you play
with your frame size at all?</div>
<div><br>
</div>
<div>Ian</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Sep 14, 2017 at
7:10 AM, Jim Klimov <span dir="ltr"><<a
href="mailto:jimklimov@cos.ru"
target="_blank" moz-do-not-send="true">jimklimov@cos.ru</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div class="m_-348233399284751032HOEnZb">
<div class="m_-348233399284751032h5">On
September 14, 2017 2:26:13 PM GMT+02:00,
Dirk Willems <<a
href="mailto:dirk.willems@exitas.be"
target="_blank" moz-do-not-send="true">dirk.willems@exitas.be</a>>
wrote:<br>
>Hello,<br>
><br>
><br>
>I'm trying to understand something let
me explain.<br>
><br>
><br>
>Oracle always told to me that if you
create a etherstub switch it has<br>
>infiniband speed 40GB/s.<br>
><br>
>But I have a customer running on
Solaris (Yeah I know but let me<br>
>explain) who is copy from 1 NGZ to
another NGZ on the same GZ over Lan<br>
>(I know told him to to use etherstub).<br>
><br>
>The copy witch is performed for a
Oracle database with sql command, the<br>
><br>
>DBA witch have 5 streams say it's
waiting on the disk, the disk are 50<br>
>-<br>
>60 % busy the speed is 30 mb/s.<br>
><br>
><br>
>So I did some test just to see and
understand if it's the database or<br>
>the system, but with doing my tests I
get very confused ???<br>
><br>
><br>
>On another Solaris at my work copy
over etherstub switch => copy speed<br>
>is 185MB/s expected much more of
infiniband speed ???<br>
><br>
><br>
>root@test1:/export/home/Admin<wbr>#
scp test10G<br>
><a
class="m_-348233399284751032moz-txt-link-abbreviated"
href="mailto:Admin@192.168.1.2:/export/"
target="_blank" moz-do-not-send="true">Admin@192.168.1.2:/export/</a>hom<wbr>e/Admin/<br>
>Password:<br>
>test10G 100%<br>
>|****************************<wbr>******************************<wbr>******|<br>
>10240<br>
>MB 00:59<br>
><br>
><br>
>root@test2:~# dlstat -i 2<br>
><br>
> LINK IPKTS RBYTES OPKTS
OBYTES<br>
> net1 25.76K 185.14M
10.08K 2.62M<br>
> net1 27.04K 187.16M
11.23K 3.22M<br>
> net1 26.97K 186.37M
11.24K 3.23M<br>
> net1 26.63K 187.67M
10.82K 2.99M<br>
> net1 27.94K 186.65M
12.17K 3.75M<br>
> net1 27.45K 187.46M
11.70K 3.47M<br>
> net1 26.01K 181.95M
10.63K 2.99M<br>
> net1 27.95K 188.19M
12.14K 3.69M<br>
> net1 27.91K 188.36M
12.08K 3.64M<br>
><br>
>The disks are all separate luns with
all separated pools => disk are 20<br>
><br>
>- 30% busy<br>
><br>
><br>
>On my OmniOSce at my lab over
etherstub<br>
><br>
><br>
>root@GNUHealth:~# scp test10G <a
class="m_-348233399284751032moz-txt-link-abbreviated"
href="mailto:witte@192.168.20.3:/export/" target="_blank"
moz-do-not-send="true">witte@192.168.20.3:/export/</a>hom<wbr>e/witte/<br>
>Password:<br>
>test10G 76% 7853MB 116.4MB/s<br>
><br>
><br>
>=> copy is 116.4 MB/s =>
expected much more from infiniband speed
is<br>
>just the same as Lan ???<br>
><br>
><br>
>Is not that my disk can not follow 17%
busy there sleeping ...<br>
><br>
> extended device statistics<br>
> r/s w/s Mr/s Mw/s wait
actv wsvc_t asvc_t %w %b device<br>
> 0,0 248,4 0,0 2,1 0,0
1,3 0,0 5,3 0 102 c1<br>
> 0,0 37,5 0,0 0,7 0,0
0,2 0,0 4,7 0 17 c1t0d0 =><br>
>rpool<br>
> 0,0 38,5 0,0 0,7 0,0
0,2 0,0 4,9 0 17 c1t1d0 =><br>
>rpool<br>
> 0,0 40,5 0,0 0,1 0,0
0,2 0,0 5,6 0 17 c1t2d0 =><br>
>data pool<br>
> 0,0 43,5 0,0 0,2 0,0
0,2 0,0 5,4 0 17 c1t3d0 =><br>
>data pool<br>
> 0,0 44,5 0,0 0,2 0,0
0,2 0,0 5,5 0 18 c1t4d0 =><br>
>data pool<br>
> 0,0 44,0 0,0 0,2 0,0
0,2 0,0 5,4 0 17 c1t5d0 =><br>
>data pool<br>
> 0,0 76,0 0,0 1,5 7,4
0,4 97,2 4,9 14 18 rpool<br>
> 0,0 172,4 0,0 0,6 2,0
0,9 11,4 5,5 12 20 DATA<br>
><br>
><br>
><br>
>root@NGINX:/root# dlstat show-link
NGINX1 -i 2<br>
><br>
> LINK TYPE ID INDEX PKTS
BYTES<br>
> NGINX1 rx bcast --
0 0<br>
> NGINX1 rx sw --
0 0<br>
> NGINX1 tx bcast --
0 0<br>
> NGINX1 tx sw --
9.26K 692.00K<br>
> NGINX1 rx local --
26.00K 216.32M<br>
> NGINX1 rx bcast --
0 0<br>
> NGINX1 rx sw --
0 0<br>
> NGINX1 tx bcast --
0 0<br>
> NGINX1 tx sw --
7.01K 531.38K<br>
> NGINX1 rx local --
30.65K 253.73M<br>
> NGINX1 rx bcast --
0 0<br>
> NGINX1 rx sw --
0 0<br>
> NGINX1 tx bcast --
0 0<br>
> NGINX1 tx sw --
8.95K 669.32K<br>
> NGINX1 rx local --
29.10K 241.15M<br>
><br>
><br>
>On the other NGZ I receive 250MB/s
????<br>
><br>
><br>
>- So my question is how comes that the
speed is equal to Lan 100MB/s on<br>
><br>
>OmniOSce but i receive 250MB/s ?<br>
><br>
>- Why is etherstub so slow if
infiniband speed is 40GB/s ???<br>
><br>
><br>
>I'm very confused right now ...<br>
><br>
><br>
>And want to know for sure how to
understand and see this in the right<br>
>way, because this customer will be the
first customer from my who gonna<br>
><br>
>switch complety over to OmniOSce on
production and because this<br>
>customer<br>
>is one or the biggest company's in
Belgium I really don't want to mess<br>
>up !!!<br>
><br>
><br>
>So any help and clarification will be
highly appreciate !!!<br>
><br>
><br>
>Thank you very much.<br>
><br>
><br>
>Kind Regards,<br>
><br>
><br>
>Dirk<br>
<br>
</div>
</div>
I am not sure where the infiniband claim comes
from, but copying data disk to disk, you
involve the slow layers like disk, skewed by
faster layers like cache of already-read data
and delayed writes :)<br>
<br>
If you have a wide pipe that you may fill, it
doesn't mean you do have the means to fill it
with a few disks.<br>
<br>
To estimate the speeds, try pure UDP streams
from process to process (no disk),
large-packet floodping, etc.<br>
<br>
I believe etherstub is not constrained
artificially, and defaults to jumbo frames.
Going to LAN and back can in fact use external
hardware (IIRC there may be a system option to
disable that, not sure) and so is constrained
by that.<br>
<br>
Jim<br>
--<br>
Typos courtesy of K-9 Mail on my Android<br>
<div class="m_-348233399284751032HOEnZb">
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</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="m_-348233399284751032gmail_signature"
data-smartmail="gmail_signature">Ian Kaufman<br>
Research Systems Administrator<br>
UC San Diego, Jacobs School of Engineering
ikaufman AT ucsd DOT edu <br>
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System Engineer </span><br>
<br>
<br>
<a href="tel:+32%203%20443%2012%2038"
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<br>
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-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">Ian
Kaufman<br>
Research Systems Administrator<br>
UC San Diego, Jacobs School of Engineering ikaufman AT ucsd
DOT edu <br>
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