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Thread: problem about mediacache in Wowza media server?

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  1. #1
    Join Date
    Dec 2013
    Posts
    16

    Default problem about mediacache in Wowza media server?

    how to configure multiple cache stores in single machine? i do that but it's not work. Please help me?

    <MediaCacheStores>
    		<MediaCacheStore>
    			<!-- variables: ${com.wowza.wms.context.ServerConfigHome} -->
    			<Path>${com.wowza.wms.context.ServerConfigHome}/mediacache1</Path>
    			<MaxSize>50G</MaxSize>
    			<Level1FolderCount>16</Level1FolderCount>
    			<Level2FolderCount>16</Level2FolderCount>
    			<FileCount>1000</FileCount>
    			<!-- Mechanical Disk: assuming 25% of 65MBps sustained I/O rate = 16MBps -->
    			<WriteRate>16M</WriteRate>
    			<WriteRateMaxBucketSize>64M</WriteRateMaxBucketSize>
    			<!-- SSD drive: assuming 25% of 150MBps sustained I/O rate = 38MBps
    			<WriteRate>38M</WriteRate>
    			<WriteRateMaxBucketSize>152M</WriteRateMaxBucketSize>
    			-->
    			<WriteRateFillFrequency>100</WriteRateFillFrequency>
    			<Properties>
    			</Properties>
    		</MediaCacheStore>
    		<MediaCacheStore>
    			<!-- variables: ${com.wowza.wms.context.ServerConfigHome} -->
    			<Path>${com.wowza.wms.context.ServerConfigHome}/mediacache2</Path>
    			<MaxSize>50G</MaxSize>
    			<Level1FolderCount>16</Level1FolderCount>
    			<Level2FolderCount>16</Level2FolderCount>
    			<FileCount>1000</FileCount>
    			<!-- Mechanical Disk: assuming 25% of 65MBps sustained I/O rate = 16MBps -->
    			<WriteRate>16M</WriteRate>
    			<WriteRateMaxBucketSize>64M</WriteRateMaxBucketSize>
    			<!-- SSD drive: assuming 25% of 150MBps sustained I/O rate = 38MBps
    			<WriteRate>38M</WriteRate>
    			<WriteRateMaxBucketSize>152M</WriteRateMaxBucketSize>
    			-->
    			<WriteRateFillFrequency>100</WriteRateFillFrequency>
    			<Properties>
    			</Properties>
    		</MediaCacheStore>
    	</MediaCacheStores>
    The block media alway save in mediacache1 and not save in mediacache2..

  2. #2
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    I think Wowza will fill one then the other. So it won't really have a RAID 0 effect if that is what you were hoping.

    Richard

  3. #3

    Default

    Hi,

    When using multiple stores, the store that is used is determined by percentage full. It looks at integer percentage values so is a fairly coarse measurement. The second store will be written to when the first is 1% full (approx 512MB).

    Roger.

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