MySQL performance on Windows

Hi all.
I have been using LV2010SP1 with MySQL to implement data acquisition systems for hundreds of channels. I typically run the MySQL instance on the same machine as the LV app and I love the synergy this combo provides. I interface LV with the database using Mike Porter's excellent ADO database toolkit. (I can't find a link to it presently but I found it on the forums.)
I have a LV process to collect the data into a table. I have another LV process to mine a small subset of channels for plotting on a chart.
I have run into a few limitations with my implementation. When the number of records in the table grew to >250K, the process of querying the table began to grow large. I now see query times longer than 50 seconds while I'm trying to refresh the chart every 10 seconds. This obviously won't work.
The current machine I am using is a Toshiba Satellite with a quad core i3, 4GB RAM, 500GB HDD, and Windows 7. When I examine the task manager in Windows, it shows most of the processor time spent idle. When I look at the MySQL Workbench performance charts, they seem to indicate a low level of activity. I'm not sure what to do to boost the performance of this setup. Have any of you expeienced similar problems?
Thanks.

I use sqlite (with a LV interface I wrote) so if the problem isn't related to some quirk with mysql, I might be able to point you in the right direction.
Is the query slow when you don't have the collection process running? (maybe some kind of contention between the reader and writer).
Is it still slow if you break the query up into smaller queries? (I'm not sure what the ADO toolkit offers but limit and offset should work although they probably aren't the ideal method, this might indicate some memory handling issues)
Are you sure that the query is the slow part, and not display code or something else? (easiest to check by just running the query by itself, be sure to try combining this with breaking up the query)
What does the slow query and database schema look like? (maybe you need to add an index or adjust the table structures)
Does it become gradually slower or suddenly jump from fast to slow?

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For more information, please see the following video:

QuestionHow can I optimize my hard disk drive usage and performance in Windows 8 or Windows 7?
AnswerThere are a few simple steps you can take to ensure your hard disk drive is used optimally.
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Hi,
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Password:
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dboptions host localhost, connectionport 3306
sourcedb test, userid root, password *****
exttrail E:\ogg_mysql\dirdat\ea
table test.*;
tried with exact hostname and localhost also but no luck.
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Enter password: ******
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.28-log MySQL Community Server (GPL)
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
Edited by: 899920 on Dec 4, 2012 1:44 AM

Hi ...
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exit
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You are awesome this worked for me I didn't see how I was going to get my new computer to reimage again Thank you sooooooooooooo much!!!

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Thank you for the star!
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http://www.mediafour.com
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http://www.cdw.com
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Hi
I recently updated one of our 2008R2 Hyper-V Hosts (Standalone) to 2012 R2. (64GB Memory, SSD Raid1 at LSI Controller + SAS RAID1 for Host OS)
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Checked same VM again on different Hardware -> same result...
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Hi LiwoCN,
aha "my Application (Sage New Classic)".
Da kann ich bestimmt in deutsch helfen (otherwise I can translate it to english).
Sage New CL - das ist genau auch unser Ding. Hier kann ich (evtl.) ein paar Tipps geben:
Sofern es noch nicht getätigt ist, ist mit MySQL und Sage Classic Line und HYPER-V folgende Einstellung eklatant wichtig:
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innodb_buffer_pool_size         = 10G
innodb_log_file_size            = 2G
innodb_log_buffer_size          = 8M
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innodb_log_files_in_group       = 4
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innodb_thread_concurrency       = 0
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ein Optimum ermitteln.
Ich hoffe das hilft weiter...
Danke und liebe Grüße Oliver Richter

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Next-Generation Java 7 Plugin Performance on Windows 7 and IE 8

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Thanks Igor.
Web Browser: IE 8.0.76
Java Plugin: 7u3 (1.7.0_03-b05)
OS: Windows 7 Enterprise (32-bit)
Server: Websphere 7
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JAR3.jar -> 5093 bytes
JAR4.jar -> 22233 bytes
JAR5.jar -> 18722 bytes
JAR6.jar -> 17578 bytes
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run1 run2 run3 run4 run5 run6 run7 run8 run9 run10
1761 474 535 495 500 505 502 267 693 513
Avg: 625ms
Using Next-Generation Plugin (milliseconds):
run1 run2 run3 run4 run5 run6 run7 run8 run9 run10
5382 1529 983 1545 1622 1575 1544 1544 1545 1529
Avg: 1880ms
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I'm basically just looking for a logical explanation to account for the significant time difference that occurs from this Plugin configuration change. It seems to make logical sense to me that this can be explained by JVM Process start up time, but I'm looking for corroboration on that or another explanation.
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Try
Mysqlconn.Open()
Dim Query As String
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Command = New MySqlCommand(Query, Mysqlconn)
READER = Command.ExecuteReader
Dim count As Integer
count = 0
While READER.Read
count = count + 1
End While
If count = 1 Then
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FORMAKRYESORE.Show()
Me.Close()
ElseIf count > 1 Then
MsgBox("Mire se vini'" & TextBox1.Text & "'")
Else
MsgBox("Manager'" & TextBox1.Text & "' is not in the data")
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Catch ex As MySqlException
MsgBox(ex.Message)
Finally
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End Try
this is the code that I use to login. but on windows phone cant import Mysql connector. not sure why... any suggestion how to deal with this?
or should I use SQLite? I dont know nothing about the code on SQLite...

If this is supposed to work just on the phone then SQLite or a Local database.
https://msdn.microsoft.com/en-us/library/windows/apps/hh202860(v=vs.105).aspx
For small amounts of data, serializing and deserializing classes to isolated storage is faster.
Phones aren't always connected to the interweb.
Even if you are planning on using a central database on some server and connecting via services, you will almost always also need to store some data locally.
It's in your interest to ask questions in the appropriate forum for the technology you're using.
As it is, you're asking wpf developers a question about windows store app development.
It's similar but different.
Which is probably why Magnus is unaware of local database and I probably omitted something else.
It's not what we do.
I've written a grand total of one windows store apps.
Magnus probably has a similar level of experience.
Hope that helps.
Recent Technet articles:
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Dynamic XAML

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Hello,
The RAM usage is ~60 - 70MB, nothing too bad. I was monitoring it a bit and it looks like the constraint is the CPU. I'm running an i5 and it's consistently taking up 30 - 40% !! When it locks up it spikes to 100%.
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Thanks,

Slow Performance with Windows 7

I have a user who just moved to a Windows 7 desktop. Performance of said desktop is adequate. On a large report that queries the SQL server, it takes a very long time to display the results (10-20 minutes to complete). Smaller reports seem to run fine. It did not take this long on Windows XP. I am by no means a Crystal Reports guy ( I know very little about it). Just wondering if anyone has experienced this issue or has any suggestions on settings to tweak to optimize performance. We're using Crystal Reports IX with SQL Server 2005. Thanks.

Hello,
Crystal Reports XI is not supported on Windows 7.
You can upgrade to CR XI R2 for free and and then upgrade to Service Pack 6 and then it will be supported.
Use your XI keycode when you install.
This is the link to get the full build:
https://smpdl.sap-ag.de/~sapidp/012002523100011802732008E/crxir2_sp4_full_build.exe
Then get SP 5 and SP 6:
https://smpdl.sap-ag.de/~sapidp/012002523100013876392008E/crxir2win_sp5.exe
https://smpdl.sap-ag.de/~sapidp/012002523100015859952009E/crxir2win_sp6.exe
Thank you
Don

Owb client+performance+x-windows

Hi,
We are using 11.2.0.1 and finding the performance of OWB slow e.g opening mappings, control center etc.
Machine has enough memory (2.5 GB and checked memory being used in task manager for owb.exe (about 400 M), total being used on PC at any time for all applications aboout 1.5gb and ruled out network latency as tested other cleint/server applications to access the same machine and dataabse and these are fine performance-wise.
The server is located in the same building as the cleint and is a UNIX server.
We are using the cumulative patch recommended by Oracle for performance reasons - still same problem.
Anybody any other tips to get design center/control center to open quickly etc?
Used previous suggestions such as Tools/Optimise repository etc and purging of audit tables.
Another question
Is it possible to run owb client (i.e. open/amend/deploy/run mapppings etc with the windows interface directly on the UNIX server (~e.g using x-windows) as opposed to the client WINDOWS pc
Many Thank

Hi
There are patches with performance related fixes in this area, if you can upgrade to 11.2.0.2 that is advised otherwise there is a mega patch for 11.2.0.1;
BEST --> OWB 11.2.0.2 + megapatch v3 (12874883)
ALTERNATE --> OWB 11.2.0.1 + patch for bug 10270220: Mega Patch v2 (supersedes patch 9802120)
Cheers
David

MySQL performance on Windows

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