Christian, Robbie:
Thanks for taking the time to review the patch that I've submitted. I think that
the latest patch that Christian worked on covers and clean most of the
observations made by Robbie
earlier in the bug and I can confirm that it doesn't modifies the original
patch with any substantial changes to what I am proposing to fix via this bug.
I've 2 observations in regards to comment #64.
1) I can definitively work with upstream to the fix made in
"fix-gcc7-compiler-errors.patch",
I will make a reference to this bug in order to keep all the further work done
in upstream in sync with this bug.
2) I have performed testing on top of the PPA[0] and the results seems to work
and confirm
the original results of the patch, that means:
a) The sysbench OLTP completes with 50,100 and 200 concurrent threads.
b) No further segfaults are being trapped on the machine for the mysqld process.
A detail on the tests performed:
root@niedbalski-artful:~# dpkg -l | grep percona
ii percona-galera-3 3.19-0ubuntu1 ppc64el
Galera replication framework for Percona XtraDB Cluster
ii percona-xtrabackup 2.3.7-0ubuntu2 ppc64el
Open source backup tool for InnoDB and XtraDB
ii percona-xtradb-cluster-5.6-dbg 5.6.34-26.19-0ubuntu4~ppa11 ppc64el
Debugging package for Percona XtraDB Cluster
ii percona-xtradb-cluster-server 5.6.34-26.19-0ubuntu4~ppa11 all
Percona XtraDB Cluster database server
ii percona-xtradb-cluster-server-5.6 5.6.34-26.19-0ubuntu4~ppa11 ppc64el
Percona XtraDB Cluster database server binaries
ii percona-xtradb-cluster-source-5.6 5.6.34-26.19-0ubuntu4~ppa11 ppc64el
Percona XtraDB Cluster 5.6 source
Version: '5.6.34-79.1-79.1' socket: '/var/run/mysqld/mysqld.sock' port: 3306
Percona XtraDB Cluster (GPL), Release 5.6.34-26.19.4c779b7, wsrep_26.19
~# sysbench --test=oltp --mysql-host=10.75.206.156 --mysql-user=test
--mysql-db=dbtest --oltp-test-mode=complex --max-requests=0 --max-time=130
--num-threads=100 run
sysbench 0.4.12: multi-threaded system evaluation benchmark
No DB drivers specified, using mysql
Running the test with following options:
Number of threads: 100
Doing OLTP test.
Running mixed OLTP test
Using Special distribution (12 iterations, 1 pct of values are returned in 75
pct cases)
Using "BEGIN" for starting transactions
Using auto_inc on the id column
Threads started!
Time limit exceeded, exiting...
(last message repeated 99 times)
Done.
OLTP test statistics:
queries performed:
read: 5309948
write: 1794076
other: 719120
total: 7823144
transactions: 339838 (2613.49 per sec.)
deadlocks: 39444 (303.34 per sec.)
read/write requests: 7104024 (54632.84 per sec.)
other operations: 719120 (5530.33 per sec.)
Test execution summary:
total time: 130.0321s
total number of events: 339838
total time taken by event execution: 12996.6388
per-request statistics:
min: 2.65ms
avg: 38.24ms
max: 1348.23ms
approx. 95 percentile: 99.35ms
Threads fairness:
events (avg/stddev): 3398.3800/48.54
execution time (avg/stddev): 129.9664/0.01
---
@cpaelzer, Please let me know if there is any other task that needs to
be performed on my side in order to get this merged/and start the SRU
process for the other series?
Thanks in advance for your comments.
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https://bugs.launchpad.net/bugs/1657256
Title:
Percona crashes when doing a a 'larger' update
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