I've only got a handful of dynamic files but of course they're huge and have a big impact on our daily and monthly processing. I'd REALLY like to understand the tuning mechanisms for these files, specifically SPLIT/MERGE.
The formulas that I got on previous responses just don't seem to make sense on one particular file. So here's a FILE.STAT and ANALYZE.FILE of a file that I believe is in need of resizing and/or reconfiguring. I believe that if I can get some input on this file, I'll be able to apply that knowledge to my other files. First, I understand quite clearly that the modulo of 235889 is about half of what it should be, at least for a block size of 4096. Second, unless I'm doing something wrong, I computed my SPLIT LOAD to be 1, which just doesn't seem right. I'd like to resize this file this weekend and I know that if I do one thing incorrectly it could make my performance even worse. Any input would be greatly appreciated. File name(Dynamic File) = OH Number of groups in file (modulo) = 235889 Dynamic hashing, hash type = 0 Split/Merge type = KEYONLY Block size = 4096 File has 234167 groups in level one overflow. Number of records = 1387389 Total number of bytes = 2132217978 Average number of records per group = 5.9 Standard deviation from average = 1.6 Average number of bytes per group = 9039.1 Standard deviation from average = 9949.2 Average number of bytes in a record = 1536.9 Average number of bytes in record ID = 12.4 Standard deviation from average = 4009.7 Minimum number of bytes in a record = 659 Maximum number of bytes in a record = 2205579 Minimum number of fields in a record = 237 Maximum number of fields in a record = 414 Average number of fields per record = 328.3 Standard deviation from average = 32.0 Dynamic File name = OH Number of groups in file (modulo) = 235889 Minimum groups of file = 235889 Hash type = 0, blocksize = 4096 Split load = 10, Merge load = 5 Split/Merge type = KEYONLY Sincerely, David Laansma IT Manager Hubbard Supply Co. Direct: 810-342-7143 Office: 810-234-8681 Fax: 810-234-6142 www.hubbardsupply.com <http://www.hubbardsupply.com> "Delivering Products, Services and Innovative Solutions" _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
