Re: RGW configuration parameters

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On 7/30/19 3:03 PM, Thomas Bennett wrote:
Hi Casey,

Thanks for your reply.

Just to make sure I understand correctly-  would that only be if the S3 object size for the put/get is multiples of your rgw_max_chunk_size?

whenever the object size is larger than a single chunk



Kind regards,
Tom

On Tue, 30 Jul 2019 at 16:57, Casey Bodley <cbodley@xxxxxxxxxx <mailto:cbodley@xxxxxxxxxx>> wrote:

    Hi Thomas,

    I see that you're familiar with rgw_max_chunk_size, which is the most
    object data that radosgw will write in a single osd request. Each
    PutObj
    and GetObj request will issue multiple osd requests in parallel,
    up to
    these configured window sizes. Raising these values can potentially
    improve throughput at the cost of increased memory usage.

    On 7/30/19 10:36 AM, Thomas Bennett wrote:
    > Does anyone know what these parameters are for. I'm not 100% sure I
    > understand what a window is in context of rgw objects:
    >
    >   * rgw_get_obj_window_size
    >   * rgw_put_obj_min_window_size
    >
    > The code points to throttling I/O. But some more info would be
    useful.
    >
    > Kind regards,
    > Tom
    >
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--
Thomas Bennett

Storage Engineer at SARAO
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