Re: Is committing objects with ZEO 4 on Linux insanely slow for everyone? Or just me?

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On 08/10/2016 04:58 PM, Tres Seaver wrote:

> $ bin/pip freeze -f file:///home/tseaver/.pip/wheels BTrees==4.3.1 
> persistent==4.2.1 six==1.10.0 transaction==1.6.1 zc.lockfile==1.2.1 
> ZConfig==3.1.0 zdaemon==4.1.0 ZEO==4.3.0 ZODB==4.4.3 
> zodbpickle==0.6.0 zope.exceptions==4.0.8 zope.interface==4.2.0 
> zope.testing==4.5.0

> $ bin/python perf4.py Times per operation in microseconds (o=999, t=3,
> c=1) op          min         mean       median          max add
> 44248 update        41771 cached          193 read         2658 
> ------------------------- % -------------------------------

Just for fault-isolation purposes, I tried again with older ZEO / ZODB:

$ bin/python --version
Python 2.7.11

$ bin/pip freeze
- -f file:///home/tseaver/.pip/wheels
BTrees==4.3.1
persistent==4.2.1
six==1.10.0
transaction==1.6.1
zc.lockfile==1.2.1
ZConfig==3.1.0
zdaemon==4.1.0
ZEO==4.1.0
ZODB==4.3.1
zodbpickle==0.6.0
zope.exceptions==4.0.8
zope.interface==4.2.0
zope.testing==4.5.0

$ bin/python perf4.py
Times per operation in microseconds (o=999, t=3, c=1)
           op          min         mean       median          max
          add        43945
       update        40218
       cached          149
         read         2485


Same older versions, but with Python 2.6:

$ bin/python --version
Python 2.6.9

$ bin/pip freeze
- -f file:///home/tseaver/.pip/wheels
BTrees==4.3.1
persistent==4.2.1
six==1.10.0
transaction==1.6.1
zc.lockfile==1.2.1
ZConfig==3.1.0
zdaemon==4.1.0
ZEO==4.1.0
ZODB==4.3.1
zodbpickle==0.6.0
zope.exceptions==4.0.8
zope.interface==4.2.0
zope.testing==4.5.0

$ bin/python perf4.py
Times per operation in microseconds (o=999, t=3, c=1)
           op          min         mean       median          max
          add        43310
       update        44609
       cached          147
         read          768


With Python3 and the current releases:

$ bin/python3 --version
Python 3.4.3

$ bin/pip3 freeze
- -f file:///home/tseaver/.pip/wheels
BTrees==4.3.1
persistent==4.2.1
six==1.10.0
transaction==1.6.1
zc.lockfile==1.2.1
ZConfig==3.1.0
zdaemon==4.1.0
ZEO==4.3.0
ZODB==4.4.3
zodbpickle==0.6.0
zope.exceptions==4.0.8
zope.interface==4.2.0
zope.testing==4.5.0

$ bin/python3 perf4.py
Times per operation in microseconds (o=999, t=3, c=1)
           op          min         mean       median          max
          add         8674
       update         8516
       cached          238
         read         2016



Tres.
- -- 
===================================================================
Tres Seaver          +1 540-429-0999          [email protected]
Palladion Software   "Excellence by Design"    http://palladion.com
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