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zodb / relstorage / 602 / 4
Job Ran: 30 Jan 2017 07:28PM UTC (3.9s) with ENV=mysql
96%
master: 93%

DEFAULT BRANCH: master
LAST BUILD BRANCH: issue425
Repo Added 10 Jun 2016 11:39AM UTC
# Builds 1310 Last
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30 Jan 2017 - 19:22 coverage decreased (-0.03%) to 95.74%
602

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Ff61a0c255902fd476368945b1f70be3?size=18&default=identiconjamadden 
Use InnoDB temp tables

And truncate them.

For most things this seems to speed up writes by around 10% due to the
way the temp tables are allocated.

Tested on both 5.5 and 5.7.

I think the dropping was an attempt to make the tables statement-level
replication compatible, but since they weren't transactianal I don't
think that worked. They were also variable sized so I don't think there
ware any speed benefits.

Benchmarks from 5.5:

zodbshootout -c 2 shootout.conf -n 100 --test-reps 200 -r 1 -s 256

** concurrency=2 **
"Transaction",               mysql_hf
"Add 100 Objects",               6493
"Update 100 Objects",            9636
"Read 100 Warm Objects",         9797
"Read 100 Cold Objects",         9336
"Read 100 Hot Objects",         37407
"Read 100 Steamin' Objects",   921761

** concurrency=6 **
"Transaction",               mysql_hf
"Add 100 Objects",              10574
"Update 100 Objects",           15492
"Read 100 Warm Objects",        19290
"Read 100 Cold Objects",        17051
"Read 100 Hot Objects",         72304
"Read 100 Steamin' Objects",  1590488

** concurrency=2 **
"Transaction",               mysql_hf
"Add 100 Objects",               7079
"Update 100 Objects",            9782
"Read 100 Warm Objects",         8726
"Read 100 Cold Objects",         9834
"Read 100 Hot Objects",         40004
"Read 100 Steamin' Objects",   937232

c=6
** concurrency=6 **
"Transaction",               mysql_hf
"Add 100 Objects",              10612
"Update 100 Objects",           15789
"Read 100 Warm Objects",        17501
"Read 100 Cold Objects",        16556
"Read 100 Hot Objects",         71868
"Read 100 Steamin' Objects",  1549534

zodbshootout -c 2 shootout.conf -n 100 --test-reps 200 -r 1 -s 96

** concurrency=2 **
"Transaction",               mysql_hf
"Add 100 Objects",              15547
"Update 100 Objects",           14337
"Read 100 Warm Objects",        12357
"Read 100 Cold Objects",        13686
"Read 100 Hot Objects",         54559
"Read 100 Steamin' Objects",   945789

"Transaction",               mysql_hf
"Add 100 Objects",              16968
"Update 100 Objects",           16184
"Read 100 Warm Objects",        13430
"Read 100 Cold Objects",        13557
"Read 100 Hot Objects",         54625
"Read 100 Steamin' Objects",   966802

5214 of 5446 relevant lines covered (95.74%)

10.34 hits per line

Source Files on job 602.4 (ENV=mysql)
Coverage ∆ File Lines Relevant Covered Missed Hits/Line