[OmniOS-discuss] questions

Ludovic Orban lorban at bitronix.be
Thu Sep 14 13:27:36 UTC 2017


Here's a quick thought: if you are copying your files with scp, you might
be CPU bound because of all the crypto work. You should try to copy with a
much more CPU-lightweight tool. I personally usually use netcat for this
kind of stuff.

Just my 2 cents.

--
Ludovic

On Thu, Sep 14, 2017 at 2:26 PM, Dirk Willems <dirk.willems at exitas.be>
wrote:

> Hello,
>
>
> I'm trying to understand something let me explain.
>
>
> Oracle always told to me that if you create a etherstub switch it has
> infiniband speed 40GB/s.
>
> But I have a customer running on Solaris (Yeah I know but let me explain)
> who is copy from 1 NGZ to another NGZ on the same GZ over Lan (I know told
> him to to use etherstub).
>
> The copy witch is performed for a Oracle database with sql command, the
> DBA witch have 5 streams say it's waiting on the disk, the disk are 50 - 60
> % busy the speed is 30 mb/s.
>
>
> So I did some test just to see and understand if it's the database or the
> system, but with doing my tests I get very confused ???
>
>
> On another Solaris at my work copy over etherstub switch => copy speed is
> 185MB/s expected much more of infiniband speed ???
>
>
> root at test1:/export/home/Admin# scp test10G Admin at 192.168.1.2:/export/
> home/Admin/
> Password:
> test10G              100% |*****************************
> ***********************************| 10240 MB    00:59
>
>
> root at test2:~# dlstat -i 2
>
>  LINK    IPKTS   RBYTES    OPKTS   OBYTES
>            net1   25.76K  185.14M   10.08K    2.62M
>            net1   27.04K  187.16M   11.23K    3.22M
>            net1   26.97K  186.37M   11.24K    3.23M
>            net1   26.63K  187.67M   10.82K    2.99M
>            net1   27.94K  186.65M   12.17K    3.75M
>            net1   27.45K  187.46M   11.70K    3.47M
>            net1   26.01K  181.95M   10.63K    2.99M
>            net1   27.95K  188.19M   12.14K    3.69M
>            net1   27.91K  188.36M   12.08K    3.64M
>
> The disks are all separate luns with all separated pools => disk are 20 -
> 30% busy
>
>
> On my OmniOSce at my lab over etherstub
>
>
> root at GNUHealth:~# scp test10G witte at 192.168.20.3:/export/home/witte/
> Password:
> test10G
> 76% 7853MB 116.4MB/s
>
>
> => copy is 116.4 MB/s => expected much more from infiniband speed is just
> the same as Lan ???
>
>
> Is not that my disk can not follow 17% busy there sleeping ...
>
>    extended device statistics
>     r/s    w/s   Mr/s   Mw/s wait actv wsvc_t asvc_t  %w  %b device
>     0,0  248,4    0,0    2,1  0,0  1,3    0,0    5,3   0 102 c1
>     0,0   37,5    0,0    0,7  0,0  0,2    0,0    4,7   0  17 c1t0d0 =>
> rpool
>     0,0   38,5    0,0    0,7  0,0  0,2    0,0    4,9   0  17 c1t1d0 =>
> rpool
>     0,0   40,5    0,0    0,1  0,0  0,2    0,0    5,6   0  17 c1t2d0 =>
> data pool
>     0,0   43,5    0,0    0,2  0,0  0,2    0,0    5,4   0  17 c1t3d0 =>
> data pool
>     0,0   44,5    0,0    0,2  0,0  0,2    0,0    5,5   0  18 c1t4d0 =>
> data pool
>     0,0   44,0    0,0    0,2  0,0  0,2    0,0    5,4   0  17 c1t5d0 =>
> data pool
>     0,0   76,0    0,0    1,5  7,4  0,4   97,2    4,9  14  18 rpool
>     0,0  172,4    0,0    0,6  2,0  0,9   11,4    5,5  12  20 DATA
>
>
>
> root at NGINX:/root# dlstat show-link NGINX1 -i 2
>
>  LINK  TYPE      ID  INDEX     PKTS    BYTES
>          NGINX1    rx   bcast     --        0        0
>          NGINX1    rx      sw     --        0        0
>          NGINX1    tx   bcast     --        0        0
>          NGINX1    tx      sw     --    9.26K  692.00K
>          NGINX1    rx   local     --   26.00K  216.32M
>          NGINX1    rx   bcast     --        0        0
>          NGINX1    rx      sw     --        0        0
>          NGINX1    tx   bcast     --        0        0
>          NGINX1    tx      sw     --    7.01K  531.38K
>          NGINX1    rx   local     --   30.65K  253.73M
>          NGINX1    rx   bcast     --        0        0
>          NGINX1    rx      sw     --        0        0
>          NGINX1    tx   bcast     --        0        0
>          NGINX1    tx      sw     --    8.95K  669.32K
>          NGINX1    rx   local     --   29.10K  241.15M
>
>
> On the other NGZ I receive 250MB/s ????
>
>
> - So my question is how comes that the speed is equal to Lan 100MB/s on
> OmniOSce but i receive 250MB/s ?
>
> - Why is etherstub so slow if infiniband speed is 40GB/s ???
>
>
> I'm very confused right now ...
>
>
> And want to know for sure how to understand and see this in the right way,
> because this customer will be the first customer from my who gonna switch
> complety over to OmniOSce on production and because this customer is one or
> the biggest company's in Belgium I really don't want to mess up !!!
>
>
> So any help and clarification will be highly appreciate !!!
>
>
> Thank you very much.
>
>
> Kind Regards,
>
>
> Dirk
>
>
> --
> Dirk Willems
> System Engineer
>
>
> +32 (0)3 443 12 38 <03%20443%2012%2038>
> Dirk.Willems at exitas.be
>
> Quality. Passion. Personality
>
> www.exitas.be | Veldkant 31 | 2550 Kontich
>
> Illumos OmniOS Installation and Configuration Implementation Specialist.
> Oracle Solaris 11 Installation and Configuration Certified Implementation
> Specialist.
>
> _______________________________________________
> OmniOS-discuss mailing list
> OmniOS-discuss at lists.omniti.com
> http://lists.omniti.com/mailman/listinfo/omnios-discuss
>
>
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