[pypy-issue] [issue1747] PyPy getting gradually slower on Richards Benchmark with every iteration

[Stefan M.]

New submission from Stefan M. <pypy at stefan-marr.de>:

I observed reproducibly on PyPy 2.2.1 that the Richards benchmark 
(https://raw.githubusercontent.com/smarr/Classic-
Benchmarks/2e7f912f9da1c50c4a83cd4b09a1ba105e154beb/richards.py) becomes slower with every 
iteration (after 3 warmup iterations).

It does not seem to reach a stable state.

I executed the benchmark with: `pypy richards.py 1000 0 100` (that's 1000 runs, 0 suppressed 
warmup runs, and 100 inner iterations of the benchmark)

The OS is a Ubuntu 13.10, was all updates.

----------
messages: 6815
nosy: pypy-issue, smarr
priority: bug
release: 2.2
status: unread
title: PyPy getting gradually slower on Richards Benchmark with every iteration

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