Hi Harold,
The simplest solution - that of simply copying the JPG files to one type 19 directory - is working, to my amazement. There are 171,000 mugshots in one directory and they are being handled correctly.
Remember that the process of searching an operating system directory is essentially a linear scan. This will need to examine, on average, half the entries before finding the one you want when reading. A write may have to scan the whole directory.
There probably isn't much you can do about this aside from moving to a hashed file which might be a tuning nightmare. Also, if this is Unix, each file takes an inode so you need to keep an eye on the file system limits.
Martin Phillips, Ladybridge Systems Ltd -------
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