I've installed a SQL Reporting server (2008 R2), with some reports. But I've some performances issues.
The first call of the day to the server(going on the report interface by example), is VERY slow(something like 30-45seconds at best).
The report generation is then "fast"(1-2 seconds).
The next calls to the server are always fasts until the next day. I've the impression that it loads a lot of thing in the memory. But what can takes 30-45 seconds to be loaded in memory??? And how to load it only once?
The server is good enough(quad core, 8GB of ram, never near its capacity for now).
What is the problem? How can I resolve this ?
Thoses reports will be launched only 4-5 times in a week, so they will always be slow if I can't change this. And since it's available for customer, I just can't make them understand this(and the report is called through a website, so I risk to have timeout).
Thank you very much
The primary solution to speeding SSRS reports, irrespective of the database, and as a business analyst in a large hierarchy, is to cache the reports.
If a single report is processing slowly, tune report dataset queries if the report must run on demand. You might also consider using shared datasets that you can cache, caching the report, or running the report as a snapshot.
Row groups and column groups You can organize data into groups by rows or columns. Row groups expand vertically on a page. Column groups expand horizontally on a page. Groups can be nested, for example, group first by [Year], then by [Quarter], then by [Month].
SSRS does not support the JSON format, nor does it provide any organic JSON data source, but the converted data can be used in SSRS.
It seems to be an SSRS issue. There is nothing wrong with your report.
It's "normal" that SSRS takes more time to load the first time you access it after a long time of inactivity. The issue is caused by the way how SSRS works and SSRS regularly restarts application domain after a specific time period. After the application domain is restarted, then upon first request to the SSRS it needs to load all the settings and it takes quite a long time.
This blog show's a workaround for the situation
Here is the powershell script that I wrote to fix the problem. It is setup as a task to run every 1:00am:
Stop-Service "SQL Server Reporting Services (MSSQLSERVER)"
Start-Service "SQL Server Reporting Services (MSSQLSERVER)"
$wc = New-Object system.net.webClient
$cred = [System.Net.CredentialCache]::DefaultNetworkCredentials
$wc.Credentials = $cred
$src = $wc.DownloadString("http://localhost/Reports/Pages/Report.aspx?ItemPath=***NAME OF HOME PAGE***")
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