Sorry.. I forgot to add that the Disk issue was with TEMBDB growing to over 1gb.. and the VMware disk is limited in size. the Ram issue is when SQL server sucked up all the ram and VMware only was allocated 2gb. Tembdb was normally the issue though.
On Wed, Jan 20, 2010 at 9:58 AM, Kyley Harris <ky...@harrissoftware.com>wrote: > I use VMWare exclusively and there is one occassion when SQL Server grinds > to a halt and can go 100 times slower. > > when running your query check the Total Available memory on the task > manager. > > I have found that when the Available memory is less than 200mb AND/OR > available HDD space on the computer is less than a 500MB (rough figures I > know) on the computer running SQL server queries that normally take 1 second > can take 20 or 50 or 100 seconds to perform. When I make sure there is > plenty of ram, and disk, SQL server speeds up again. > > > On Wed, Jan 20, 2010 at 9:44 AM, Gary T. Benner <g...@benner.co.nz> wrote: > >> *[Reply]* >> >> HI all, >> >> In working with John on this one I did some research on available >> resources for this task, and there seems to be a deafening lack of material >> available online. As opposed to other Delphi related topics. >> >> Is this due to (a) this is not something that is straight forward ( ie >> fish hooks abound), or (b) this is not something Delphi developers really >> want to do ( they prefer other DB's ), or (c) are people keeping their >> solutions close to their chest? >> >> Are the component sets included in Delphi up to the job? >> >> Are there other third party components that do a better job for the simple >> Data Aware architecture? >> >> In John's case it may well be the VM has limited resources - it's all on >> his laptop with 2M total, and Vista as the host may well be hogging memory >> etc. >> >> Ideas, opinions appreciated. >> >> cheers >> >> Gary >> >> A*t 00:40 on 20/01/2010 you wrote * >> >> >To : delphi@delphi.org.nz >> >> >CC : >> >> >From: John Bird, johnkb...@paradise.net.nz >> >> >Content Type: text/html >> >> >Attached: >> >> > >> >> >This is a multi-part message in MIME format. >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> >The DB server is as local as can be - ie in this case its on the same PC >> - although in a VMWare workstation virtual PC. >> >> > >> >> >The slowness was the main reason I wanted to check DBExpress or >> simpledataset to see how fast they were. >> >> > >> >> >Since then we decided to put an initial filter in the select SQL, and the >> time taken to return data is definitely proportional to the number of >> records - 30 records takes under a second, 700 2-3 seconds. This is >> workable, although want faster. >> >> > >> >> >Question 1 - might the VMWare need tuning? With XP, MSSQL, D2007, and a >> large dataset etc running may there some memory bottleneck issues with the >> VM? Has 512MB assigned for VM, looks to be sufficient.. >> >> > >> >> >One trick I have read is to disconnect any datasource and/or controls >> while data loads - this can make a huge difference when loading a large >> dataset. (This was in the help for TKBMMemtable). >> >> > >> >> >Question 2 - How does ADO compare in speed to BDE/DBX etc? >> >> > >> >> >John >> >> > >> >> > I'd be looking to make sure that the DB Server itself isn't the >> bottleneck here - quick and easy test, run the SQL select statement through >> Query Analyser (yuck!) and see what sort of response time you get. >> Alternatively, (and shameless plug) download a copy of DBOptimizer from our >> website, point it at your server, and then get your application to hit the >> server and see where the bottleneck is. DBOptimizer can also show you >> network issues if it's that, and can also highlight if your client is >> spamming a slow down message while it tries to digest the resultset. The >> trial edition will give you all the results (it's evaluation time limited, >> not feature limited) >> >> > >> >> > >> >> > >> >> > Peter Joint >> >> > Embarcadero Technologies, Inc. | www.embarcadero.com >> >> > peter.jo...@embarcadero.com >> >> > Office: +61 (3) 9018-7752 | Fax: +61 (2) 8296-5831 | Mobile: +61 (404) >> 646 486 >> >> > >> >> > Linked in: http://www.linkedin.com/in/peterjoint >> >> > >> >> > >> >> > >> >> > From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] >> On Behalf Of Jeremy Coulter >> >> > Sent: Tuesday, 19 January 2010 7:57 PM >> >> > To: 'NZ Borland Developers Group - Delphi List' >> >> > Subject: Re: [DUG] MSSQL with D2007 >> >> > >> >> > >> >> > >> >> > OR.....your DB server is just really slow J >> >> > >> >> > We use the TADO controls, but were possible, or where I am not being >> lazy, use non DB bound controls. >> >> > >> >> > However I have heard the SDAC controls are meant to be pretty good as >> Kyley seems to back up. Just a bit expensive from Memory. >> >> > >> >> > >> >> > >> >> > jeremy >> >> > >> >> > >> >> > >> >> > From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] >> On Behalf Of David Brennan >> >> > Sent: Tuesday, 19 January 2010 21:19 >> >> > To: 'NZ Borland Developers Group - Delphi List' >> >> > Subject: Re: [DUG] MSSQL with D2007 >> >> > >> >> > >> >> > >> >> > I should say there is something wrong with your ADO setup if it is >> taking that long for 7000 records, unless they are VERY big records. >> >> > >> >> > >> >> > >> >> > 7000 records of 2-4000 bytes each should be only a second or so (don't >> want to be more accurate in my estimate without testing, been a while since >> I paid much attention to data transfer times be honest!) >> >> > >> >> > >> >> > >> >> > David. >> >> > >> >> > >> >> > >> >> > From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] >> On Behalf Of John Bird >> >> > Sent: Tuesday, 19 January 2010 8:05 p.m. >> >> > To: NZ Borland Developers Group - Delphi List >> >> > Subject: [DUG] MSSQL with D2007 >> >> > >> >> > >> >> > >> >> > Been trying to connect to MSSQL 2005 with DB Express (TSQLConnection and >> TSQLQuery), but cannot get it to work, we are getting an access violation at >> address 017E0913 in DBXMSS30.DLL read of address 01820000 >> >> > >> >> > >> >> > >> >> > Using instead ADO (TADOConnection and TADOQuery) works fine, but is slow >> - 7000 records takes 30-40 seconds to load. >> >> > >> >> > >> >> > >> >> > The rest of the components the same (ie TDatasetProvider, >> TCLientDataSet, TDatasource) ie have been pointing the Datasetprovider at >> either the TADOQuery or the TSQLQuery >> >> > >> >> > >> >> > >> >> > Also tried the TSimpleDataSet, has the same error as the first sentence. >> >> > >> >> > All the queries allow me at design time to set active to true >> successfully, but still crash when the dataset is set to open.... >> >> > >> >> > >> >> > >> >> > Does anyone have any idea what could be going wrong? >> >> > >> >> > >> >> > >> >> > And any recommendations of best combinations you prefer for MSSQL with >> D2007. I am new to connecting D2007 to MSSQL so willing to do it whichever >> way works best. >> >> > >> >> > >> >> > >> >> > John >> >> > >> >> > >> >> > >> >> >> >------------------------------------------------------------------------------ >> >> > >> >> > >> >> > _______________________________________________ >> >> > NZ Borland Developers Group - Delphi mailing list >> >> > Post: delphi@delphi.org.nz >> >> > Admin: http://delphi.org.nz/mailman/listinfo/delphi >> >> > Unsubscribe: send an email to delphi-requ...@delphi.org.nz with >> Subject: unsubscribe >> >> > >> >> > >> >> >_______________________________________________ >> >> >NZ Borland Developers Group - Delphi mailing list >> >> >Post: delphi@delphi.org.nz >> >> >Admin: http://delphi.org.nz/mailman/listinfo/delphi >> >> >Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >> unsubscribe >> >> >> >> Gary Benner MNZCS ITCP >> ------------------------------ >> >> Semantic Limited <http://www.semantic.co.nz> - Online Education, >> e-Commerce, Software Development & Systems Design >> >> 123 Internet Limited <http://www.123.net.nz> - Managed Web Hosting, >> Virtualisation, High Availability Systems & Cluster Technologies >> >> *Mob:* 021 966 992 >> >> *DDI:* +64 7 543 1206 >> >> *Email:* g...@benner.co.nz >> >> *Skype:* garybenner >> >> >> >> Ref#: 41006 >> >> >> _______________________________________________ >> NZ Borland Developers Group - Delphi mailing list >> Post: delphi@delphi.org.nz >> Admin: http://delphi.org.nz/mailman/listinfo/delphi >> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >> unsubscribe >> > > > > -- > Kyley Harris > Harris Software > +64-21-671-821 > -- Kyley Harris Harris Software +64-21-671-821
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