[lustre-discuss] slow write performance from client to server

[Riccardo Veraldi]

On 10/16/18 5:54 AM, Peter Jones wrote:
> Have you tried running 2.10.5 on a RHEL6 client?

hello, sorry I did not do that but I think it is my next option.


> On 2018-10-16, 2:13 AM, "lustre-discuss on behalf of Riccardo Veraldi" <lustre-discuss-bounces at lists.lustre.org on behalf of Riccardo.Veraldi at cnaf.infn.it> wrote:
>
>      On 10/16/18 2:08 AM, George Melikov wrote:
>      > Please post your benchmark method.
>      
>      my benchmark method is by using bbcp.
>      
>      lustre clients 2.10.5 on RHEL7  are fast (1.1GB/s) while RHEL6 clients
>      using 2.8.0 perform very poorly (2MB/s)
>      
>      
>      >
>      > ____________________________________
>      > Sincerely,
>      > George Melikov,
>      > Tel. 7-915-278-39-36
>      > Skype: georgemelikov
>      >
>      >
>      > 16.10.2018, 12:03, "Riccardo Veraldi" <riccardo.veraldi at cnaf.infn.it>:
>      >> On 10/15/18 4:59 PM, Alexander I Kulyavtsev wrote:
>      >>>   You can do a quick check with 2.10.5 client by mounting lustre on MDS if you do not have free node to install 2.10.5 client.
>      >>>
>      >>>   Do you have lnet configured with IB or 10GE? LNet defaults to tcp if not set. Can it be you are connected through slow management network?
>      >>>
>      >>>   Alex.
>      >> hi, my lnet is configured with both IB and 10GE. it is using IB I
>      >> verified it and anyway performance is very slow even if it where just
>      >> using tcp on 10GE
>      >>
>      >> since I only get 2MB/s
>      >>
>      >> thanks
>      >>
>      >>>   On 10/15/18, 6:41 PM, "lustre-discuss on behalf of Riccardo Veraldi" <lustre-discuss-bounces at lists.lustre.org on behalf of Riccardo.Veraldi at cnaf.infn.it> wrote:
>      >>>
>      >>>        Hello,
>      >>>
>      >>>        I have a new Lustre FS version 2.10.5. 18 OSTs 18TB each on 3 OSSes.
>      >>>
>      >>>        I noticed very slow performances couple of MB/sec when RHEL6 Lustre
>      >>>        clients 2.8.0 are writing to the fielsystem.
>      >>>
>      >>>        Could it be a Lustre version problem server vs client ?
>      >>>
>      >>>        I have no errors either on server or client side that can debug it
>      >>>        further...
>      >>>
>      >>>        thanks
>      >>>
>      >>>        Rick
>      >>>
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