Shmuel Metz , Seymour J. wrote:
More like a precursor to the cache on a 3880-12.
splitting the difference :-) 3880-11 was "ironwood" ... 8mbyte 4k, "page" record cache 3880-13 was "sheriff" ... 8mbyte, full-track cache later they were both upgraded to 32mbyte as -21 & -23 old post with some product "code" names http://www.garlic.com/~lynn/2007e.html#38 FBA rant there were some early -13 (& -23) literature showing 90percent cache hit rate. i pointed out that the example was actually 3880 with 10 records per track and reading sequentially. the first record read for a track would have a miss and bring in the whole track and then the subsequent 9 reads would all be hits. I raised the issue that if the application were to do full-track buffer reads ... that the same sequently read would drop to zero percent hit rate. past posts in this thread: http://www.garlic.com/~lynn/2008i.html#19 American Airlines http://www.garlic.com/~lynn/2008i.html#34 American Airlines http://www.garlic.com/~lynn/2008i.html#35 American Airlines http://www.garlic.com/~lynn/2008i.html#37 American Airlines http://www.garlic.com/~lynn/2008i.html#38 American Airlines http://www.garlic.com/~lynn/2008i.html#39 American Airlines ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
