Neil Tompkins wrote:
> Thanks for your help. In the end I've decided to use GetTickCount()
>
> Neil
>
>
>
>> Date: Wed, 14 May 2008 13:44:22 +0100> From: ben@stripped> To:
> neildtompkins@stripped> CC: mysql@stripped> Subject: Re: Query execution
> time - MySQL> > Hi Neil,> > If your using Linux then you have to install the
> glib RPM's in the usual > way. I don't know about other platforms, but I am sure there
> will be a > version of glib out there...> > Also ensure the correct include and
> link directives are in your > Makefile, which you can get (on Linux) using the
> commands:> > # glib-config --cflags> # glib-config --libs> > Ben> >
> Neil Tompkins wrote:> > Thanks Ben, but I don't appear to have the header file
> <glib.h> in my > > libraries.> > > > Neil> > > > >
> > ------------------------------------------------------------------------> >
> > > > Date: Wed, 14 May 2008 12:39:09 +0100> > > From:
> ben@stripped> > > To: neildtompkins@stripped> > > CC:
> craig.huffstetler@stripped; mysql@stripped> > > Subject: Re: Query
> execution time - MySQL> > >> > > If you us
ing C++ then you can use this:> > >> > >
http://developer.gimp.org/api/2.0/glib/glib-Timers.html> > >> > > I use
this in my code, does an excelent job.> > >> > > Also you may want to
look at the 'slow log' in mysql which will show, to> > > the nearest second, the
length of queries....> > >> > > Ben> > >> > > Neil
Tompkins wrote:> > > > Hi Craig,> > > >> > > > Thanks
for your detailed reply. Basically what I'm trying to > > extract is the time taken
from when I execute the mysql query in my C++ > > Builder program until the time
the query has finished.> > > >> > > > So my question is can I
build in to my SQL query SELECT Name FROM > > Customers the time the query actually
took or do I need to do this > > outside of my query.> > > >> >
> > Regards> > > > Neil> > > >> > > >> >
> > Date: Wed, 14 May 2008 07:21:04 -0400From: > >
craig.huffstetler@stripped: mysql@stripped: Re: Query > >
execution time - MySQLCC: neildtompkins@stripped Niel,Not > > much
detail there (but I'll go off what you provided...). Some people > > limit the
actual MySQL system for times it TAKES MySQL to execute > > queries. For THIS to be
accomplished, MySQL has built-in functionality > > to measure the time is takes
queries to take place so it can ... limit > > them. So, in essence, I guess we can
extract that data and get it back > > to you for whatever usage statistic you are
looking to measure. ( See: > >
http://www.bigresource.com/MYSQL-what-is-execution-time-of-a-query-based-on-was-a-mysql-question--0PxW0B3P.html
> > ) or for usage in JDBC by calling the setQueryTimeout() function of a > >
Statement object...and so forth.HOWEVER - Just so you know, if you > > execute the
query MANUALLY via the command-line of MySQL it will tell > > you how long the
query took. Just use normal SQL syntax, execute> > > the query on the table and
VOILA! Your answer:mysql queryormysqlrun > > the query (use the below
quoted/threaded example as a starting place to >
> write your own query...?)Take a look at this thread (it basically > > explains
> the answer with a bit more detail on what the output will > >
> be):http://forums.mysql.com/read.php?108,51989,142404#msg-142404> > > > SELECT
> * FROM user_log; 15113 rows fetched in 5.3274s (0.1498s) > > SELECT
> BENCHMARK(100000000, RAND()); 1 row fetched in 0.0505s (13.2676s) > > I believe the
> results are the following: The first number is the time it > > took MySQL server to
> send the result set to the client. The second > > number (in parens) is the time it
> took MySQL server to execute the query > > itself.> > > > TOTAL TIME
> will EQUAL A + B (for total time it took on your > > server/P.C. or wherever you are
> running the query...). Many things come > > into factoring why it takes longer or
> shorter. So this is why I asked if > > you are attempting to optimize or what not,
> but that is whole new story. > > (( ----> What Operating System are you running?
> This would be helpful to > > give you the step-b
y-step, so to speak. Or perhaps provide us with a bit > > more information***Also,
if you are looking to perhaps make it so > > queries take shorter times
(optimization effort) to execute a little bit > > more about your MySQL database
setup and machine(s) would be beneficial > > to us as well. ))Let me know if you
have any questions.Standing by and I > > hope this helped you.Sincerely,Craig
Huffstetlerxq on FreeNode #mysql | > > #apache> > > > On Wed, May 14,
2008 at 6:13 AM, Neil Tompkins > > <neildtompkins@stripped> wrote:>
> > > Hi,When performing a SQL query like SELECT Name FROM Customers. How >
> do I obtain the time in which the query took to execute like 1.5 seconds > >
etcThanks,Neil_________________________________________________________________All >
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--> > > MySQL General Mailing List> > > For list archives:
http://lists.mysql.com/mysql> > > To unsubscribe: > >
http://lists.mysql.com/mysql?unsub=1 > >> > > > > >
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Hi,
Not sure about this, but do profiles exist in 3? If so you could do set
profile=1
mysql> set profiling=1;
Query OK, 0 rows affected (0.00 sec)
mysql> select count(*) from visitor;
+----------+
| count(*) |
+----------+
| 2841878 |
+----------+
1 row in set (0.00 sec)
mysql> show profile;
+--------------------------------+-----------+
| Status | Duration |
+--------------------------------+-----------+
| (initialization) | 0.0000192 |
| checking query cache for query | 0.000042 |
| Opening tables | 0.000024 |
| System lock | 0.0000202 |
| Table lock | 0.0000512 |
| init | 0.000024 |
| optimizing | 0.0000205 |
| executing | 0.0001027 |
| end | 0.0000212 |
| query end | 0.0000242 |
| storing result in query cache | 0.0001452 |
| freeing items | 0.0000215 |
| closing tables | 0.000021 |
| logging slow query | 0.0000197 |
+--------------------------------+-----------+
14 rows in set (0.00 sec)
And there is no reason you couldn't do this from your program as well. I
don't know what the possible performance impact would be, you don't get
time measurements for free, unless it is done from an outside the server
source..
Thanks,
Eric
