G'day Mario,

Thanks for the feedback. As mentioned earlier, this was put on hold for a family Easter event; I expect to be working on it again this week.

My main concern with MemUsed() was the bug(s) reported by hv: if I were to present Judy::HS to $work, as a buggy module, which needed patching, and appeared to be abandonware, it probably wouldn't be received too well. Using Memory::Usage instead of MemUsed() would circumvent this problem; other parts of Judy::HS seem solid (from what I've read).

Early results do show that Judy::HS used a lot less memory than %hash.

I initially used /usr/share/dict/australian-english to populate the hash keys. I chose this because it was the largest of several files I have in /usr/share/dict/ (the fact that I'm an Aussie was only a secondary consideration); however, I found that this file has entries with characters outside the 7-bit ASCII range (e.g. Ångström). This required some encoding manipulation for Judy::HS; creating this data structure was slower than for a %hash.

/usr/share/dict/linux.words is the smallest in that directory and, as far as I can tell, only uses 7-bit ASCII. I'll be giving that a try to see how Judy::HS fares against %hash when there's no encoding consideration.

There's other areas I intend to address, which will likely include: reading the data structures with and without encoding; non-integer values; and, complex structures (e.g. HoH).

All very interesting; there should be a Meditation somewhere down the track with results of this investigation.

— Ken

In reply to Re^4: Size of Judy::HS array: where is MemUsed()? by kcott
in thread Size of Judy::HS array: where is MemUsed()? by kcott

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