module loading on the pi

The example is Protocols.HTTP, which is almost twice as slow. But maybe it loads Calendar internally?

module loading on the pi

On my slow arm (about 50% the speed of a pi) it takes about a minute to load the calendar module. Almost all that time is parsing timezones. So, limiting the size of the timezone file for slow devices would help. This is somewhat surprising, becase I can not remember it taking minutes to load

module loading on the pi

I think that if it had been a problem on the old computers - which shouldn't be that much faster than a pi - I would have picked another solution for the timezones. I really wonder what's going on. Perl and python aren't very fast either, it seems.

module loading on the pi

Mabye it should cache the timezones in a decode_value data file?

module loading on the pi

I have tried that, and it is somewhat hard because they are compiled to objects in several mappines/lists. Adding _encode and _decode and then using encode/decode value does not really make things all that much faster.

module loading on the pi

Protocols.HTTP uses the calendar module to decode http dates. If everyone in the http land just used the GMT timezone as specified this would not really be needed, and perhaps now it would be safe to switch to System.TM or just mktime().

module loading on the pi

That parsing shouldn't take that long. Something is strange. Is sscanf extra slow on ARM?

module loading on the pi

Or Calendar.ISO_UTC, which doesn't load timezones. Or at least that's what it was made for... It seems pretty exactly the same level of slow now.

module loading on the pi

Perl takes 10 seconds to execute sendxmpp. 1 second of that is protocol negotiation. On the PC that operation takes 1.18 seconds, so 0.18 seconds to load the perl modules - the pi is 50 times slower.

module loading on the pi

0.18 seconds to load the perl modules - the pi is 50 times slower. Actually closer to 100x, if you are looking at raw CPU performance. However, memory speed is probably somewhat important as well, it is only about 10x slower there.

module loading on the pi

I can't spot where the delay is in Calendar, can you give a pointer? For me there's a delay between loading Calendar and Timezone.Parse_all_rules of 10 seconds, and then the parsing takes just one second. (Which is still slow. But anyway.)

Failure to compile 8.0 on CentoOS 6.6 without g++ installed

I'd rather suspect AC_PROG_CXX, which was added in this commit: commit bf4cdfefc4574f2bc59463022578d758bbd29e11 Author: Henrik Grubbström (Grubba) gru...@grubba.org Date: Mon Feb 14 13:42:35 2011 +0100 Improved support for modules needing C++ compilers.