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

[Peter Jones]

Have you tried running 2.10.5 on a RHEL6 client?

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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