Hi Leonard, > We're running LDM 6.10.1 on a mix of Linux CentOS 5 and 6 systems. All > are 64-bit. Builds were done on the systems the software runs on. The > product queues are 5GB. > > Upstream has started sending data products (files) that are 2.4GB each. > Some come through, some do not. > > I've seen mention of a 2GB limit in a couple of support tickets. Since > it is working for some products which are larger than than, I'd like to > ask what the maximum product size is. The metadata that accompanies a data-product has a size parameter that's interpreted as a 32-bit unsigned integer, so the maximum size of a data-product is (2^32)-1 bytes. The approximately 2GB limit stems from the type of an "off_t" in the C runtime library. "off_t"s are used to randomly access the product-queue. On many 32-bit systems, they are a 32-bit signed integer, in which case the maximum size of the product-queue is limited to (2^31)-1 bytes. Because you have a 64-bit system, this doesn't apply and you shouldn't have any problems sending (2^32)-1 byte products. > Thanks! > > -- > ==Leonard E. Sitongia > High Altitude Observatory > National Center for Atmospheric Research > P.O. Box 3000 Boulder CO 80307 USA > address@hidden voice: (303)497-2454 fax: (303)497-1589 Regards, Steve Emmerson Ticket Details =================== Ticket ID: SXI-868914 Department: Support LDM Priority: Normal Status: Closed
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