Ah yes yes yes!

Christoph, may I add this to my application optimization article which I 
will publish soon on my blog?

On Wednesday, April 10, 2013 8:28:40 AM UTC-4, Christoph Straßer wrote:
>
> Maybe some of you are interrested...
>
> 11.0 allows to configure the amount of memory (RAM) used as PageCache.
>
> Default is 2500 MB, we increased this value in our main.config to 8000 on 
> March 26th.
>   <PageBuilder>
>     <!-- The threshold in MB of used ServerService memory that triggers a 
> PagebuilderCache clean up operation. -->
>     <PageCacheMemoryThreshold>8000</PageCacheMemoryThreshold>
>   </PageBuilder>
>
> When we look to PageCache.log we see frequent cache-cleanup-operations 
> until March 26th. With 8GB of in memory PageCache WSM is now able to hold 
> the complete PageCache within memory. (Our WSM has 16GB of RAM.) So we 
> removed one prior existing bottleneck and improved performance.
>
> Depending on your environment and your projects it may be worth to have a 
> look at your PageCache.log
>
> ...
> 25.03.2013 19:08:26 Memory allocated: 1061 MB
> 25.03.2013 19:12:08 Memory allocated: 1340 MB
> 25.03.2013 19:17:25 Memory allocated: 1621 MB
> 25.03.2013 19:36:39 Memory allocated: 1873 MB
> 25.03.2013 19:41:25 Memory allocated: 2124 MB
> 25.03.2013 22:03:21 Memory allocated: 2375 MB
> 25.03.2013 22:04:23 Wait execute cache action=freememory, 
> Threadguid:9B809B504815425EA179A6A2A11B5526, Thread count=2
> 25.03.2013 22:04:24 Execute cache action=freememory, 
> Threadguid:9B809B504815425EA179A6A2A11B5526
> 25.03.2013 22:04:24 FreeInMemoryCache started, 
> ThreadGuid:9B809B504815425EA179A6A2A11B5526, Memory allocated: 2520 MB
> 25.03.2013 22:04:25 FreeInMemoryCache finished, 
> ThreadGuid:9B809B504815425EA179A6A2A11B5526, Memory allocated: 100 MB
> 25.03.2013 22:04:25 Memory allocated: 100 MB
> 25.03.2013 22:04:59 Memory allocated: 361 MB
> 25.03.2013 22:06:05 Memory allocated: 629 MB
> 25.03.2013 22:07:24 Memory allocated: 882 MB
> 25.03.2013 22:09:07 Memory allocated: 1142 MB
> 25.03.2013 22:10:44 Memory allocated: 1397 MB
> 25.03.2013 22:11:30 Memory allocated: 1650 MB
> 25.03.2013 22:14:49 Memory allocated: 1901 MB
> 25.03.2013 22:17:56 Memory allocated: 2156 MB
> 25.03.2013 22:39:07 Memory allocated: 2412 MB
> 25.03.2013 22:42:10 Wait execute cache action=freememory, 
> Threadguid:85777AEC43724596A2F19AADDCDAFFC9, Thread count=2
> 25.03.2013 22:42:11 Execute cache action=freememory, 
> Threadguid:85777AEC43724596A2F19AADDCDAFFC9
> 25.03.2013 22:42:11 FreeInMemoryCache started, 
> ThreadGuid:85777AEC43724596A2F19AADDCDAFFC9, Memory allocated: 2521 MB
> 25.03.2013 22:42:11 FreeInMemoryCache finished, 
> ThreadGuid:85777AEC43724596A2F19AADDCDAFFC9, Memory allocated: 133 MB
> 25.03.2013 22:42:11 Memory allocated: 133 MB
> 25.03.2013 22:43:58 Memory allocated: 404 MB
> 25.03.2013 22:48:41 Memory allocated: 660 MB
> 25.03.2013 23:00:35 Memory allocated: 932 MB
> 25.03.2013 23:10:57 Memory allocated: 1190 MB
> 25.03.2013 23:15:36 Memory allocated: 1449 MB
> 25.03.2013 23:42:11 Memory allocated: 1710 MB
> 26.03.2013 01:03:21 Memory allocated: 1965 MB
> 26.03.2013 02:16:35 Memory allocated: 2223 MB
> 26.03.2013 02:21:59 Memory allocated: 2478 MB
> 26.03.2013 02:22:05 Wait execute cache action=freememory, 
> Threadguid:001A5774B3644F76B5478BA59CC5DA24, Thread count=1
> 26.03.2013 02:22:05 Execute cache action=freememory, 
> Threadguid:001A5774B3644F76B5478BA59CC5DA24
> 26.03.2013 02:22:05 FreeInMemoryCache started, 
> ThreadGuid:001A5774B3644F76B5478BA59CC5DA24, Memory allocated: 2541 MB
> 26.03.2013 02:22:06 FreeInMemoryCache finished, 
> ThreadGuid:001A5774B3644F76B5478BA59CC5DA24, Memory allocated: 99 MB
> 26.03.2013 02:22:06 Memory allocated: 99 MB
> 26.03.2013 03:01:19 Memory allocated: 356 MB
> 26.03.2013 08:32:52 Memory allocated: 609 MB
> 26.03.2013 11:56:53 Memory allocated: 905 MB
> 26.03.2013 19:43:20 Memory allocated: 52 MB
> 26.03.2013 20:11:22 Memory allocated: 855 MB
> 26.03.2013 20:24:14 Memory allocated: 1707 MB
> 26.03.2013 20:35:03 Memory allocated: 2528 MB
> 26.03.2013 21:02:29 Memory allocated: 3350 MB
> 26.03.2013 22:07:48 Memory allocated: 4167 MB
> 26.03.2013 22:13:52 Memory allocated: 4993 MB
> 26.03.2013 22:49:23 Memory allocated: 5800 MB
> 27.03.2013 18:13:44 Memory allocated: 6601 MB
> 02.04.2013 20:32:44 Memory allocated: 7405 MB
>
> Today is April 10th - no more cache-cleanup-operations until now.
>
> Kind regards,
>
> Christoph

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