Getting error "failed to allocate a managed memory buffer of 268435456 bytes"

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C#

WCF

WCFServices

Hi All,
I am getting the "Failed to allocate a managed memory buffer of 134217728 bytes" exception when writing a message into a buffered byte array. I have googled all the possible solution and tried them all.

I have maxBufferPoolSize = 2147483647, maxBufferSize = 2147483647, transferMode = "Streamed", have plenty amount of available RAM and disc size. Below is the binding information -

 <binding name="PDIStdCustomBinding" openTimeout="00:02:00" sendTimeout="00:20:00" receiveTimeout="00:20:00" closeTimeout="00:20:00" maxReceivedMessageSize="2147483647" maxBufferSize="2147483647">

<readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />

<httpTransport maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" keepAliveEnabled="true" bypassProxyOnLocal="true"
              transferMode="Streamed" />

I have also tried recycling application pool but none of them help me.

Below is the code block which breaks -

byte[] outputBuffer = bufferManager.TakeBuffer(totalRead + buffer.Offset);

totalReads are 144305981 and offeset is 0.

Can anyone help me to find the solution for this issue.

Thanks.

What I have tried:

Checking the maxBufferPoolSize, maxBufferSize, readerQuotas and MaxBytesPerRead which are 2GB.

transferMode should be Streamed and it is Streamed.

Clearing the garbage collector.

Recycling the application pool manually and increase its virtual and private memory usage to 2GB.