I only meant that a JIT might not benefit web2py as much because we are constantly loading and running bytecodes from the disk. All of these JITs rely on loading code into memory and running it multiple times before the JIT optimizes it and provides enhanced performance. Loading bytecodes from disk each time probably prevents a JIT from ever optimizing the code, and thus prevents it from providing any benefit.
Any code loaded from gluon or from modules, however, CAN benefit from the JIT, so there is a lot of ways pypy may help web2py. The psycopg2-cffi supposedly runs faster on pypy than the normal psycopg2 on cpython in all cases except one -- "fetchall" was still faster on psycopg2+cpython. It was not a big difference in speed, however, and lots of benchmarks were improved with pypy. -- Joe On Wednesday, May 28, 2014 1:03:50 PM UTC-7, Niphlod wrote: > > web2py is constantly tested with pypy as an environment, and I really > don't see why web2py's implementation should be considered "not pypy > friendly". > That being said, the improvements on psycopg2-cffi vs psycopg2 are > ISOLATED in that specific "corner". If, for example, psycopg2-ccfi turns to > be 50% faster than psycopg2, that "splice" of performances will be noticed > in regards of the driver itself and there's nothing that web2py can do (bad > or good) to "alter" that 50%. > web2py needs to rely on the drivers to interact with the db, not the other > way around. > > On Wednesday, May 28, 2014 7:50:09 PM UTC+2, Joe Barnhart wrote: >> >> I see there is a fairly new-ish implementation of psycopg2 which conforms >> to the cffi calling convention, for use with pypy. Has anyone tried this >> along with a fresh web2py to see if improvements have been made? >> >> I've always assumed pypy would not do much for web2py because of our >> preference for "exec" instead of compiled code. But I noticed that my >> web2py projects recently have been putting most of the heavy-hitting stuff >> in modules, which would definitely be pypy-friendly. >> >> So I'm curious if anyone has dabbled with pypy and web2py (and Postgres) >> recently... >> >> -- Joe >> >> -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
