Fri, 19 Apr 2013 14:31:20 +0000

 


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> I have a question about IP on ZOS. Can you guys find out if the send buffer and receive buffer is > at the subtask level or the stream level? Buffers are at the stream level. The amount of buffer space for each st= ream is determined by the TcpConfig TCPMAXRCVBufrsize, TCPRCVBufrsize and TCPSendBufrsize values (the default) or by using the setsockopt(). Increasing the buffer sizes does not allocate or consume any additional= storage in the user address space. The data is saved in the TCPIP addre= ss space or CSM dataspace. > From the display below I'm trying to find out there is a separate sen= d buffer and receive buffer > for the streams I have highlighted in red OR if there is only one sen= d buffer and one receive > buffer for the subtask that both streams share. There are separate buffers for each stream. The data for each stream i= s saved in the TCPIP address space dynamically. This means that there is= no storage consumed if a stream is not actively sending or receiving data.= The buffer sizes determine the maximum amount of storage saved for each= stream of a connection. See the IP Configuration Reference for more information: a href=" ---Links-Are-Forbidden--- Mike Stayton z/OS Communications Server mws@us.ibm.com= ---------------



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> I have a question about IP on ZOS. Can you guys find out if the send buffer and receive buffer is > at the subtask level or the stream level? Buffers are at the stream level. The amount of buffer space for each st= ream is determined by the TcpConfig TCPMAXRCVBufrsize, TCPRCVBufrsize and TCPSendBufrsize values (the default) or by using the setsockopt(). Increasing the buffer sizes does not allocate or consume any additional= storage in the user address space. The data is saved in the TCPIP addre= ss space or CSM dataspace. > From the display below I'm trying to find out there is a separate sen= d buffer and receive buffer > for the streams I have highlighted in red OR if there is only one sen= d buffer and one receive > buffer for the subtask that both streams share. There are separate buffers for each stream. The data for each stream i= s saved in the TCPIP address space dynamically. This means that there is= no storage consumed if a stream is not actively sending or receiving data.= The buffer sizes determine the maximum amount of storage saved for each= stream of a connection. See the IP Configuration Reference for more information: a href=" ---Links-Are-Forbidden--- Mike Stayton z/OS Communications Server mws@us.ibm.com= ---------------







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Thank you Mike, this is perfect. Dana -----Original Message----- From: a href="mailto:IBM TCP/IP List [mailto:IBMTCP-L@VM.MARIST.EDU] On Behalf Of Mike W=">IBM TCP/IP List [mailto:IBMTCP-L@VM.MARIST.EDU] On Behalf Of Mike W=/a> Stayton Sent: Thursday, April 18, 2013 10:13 AM To: IBMTCP-L@VM.MARIST.EDU Subject: Re: [IBMTCP-L] Question about buffers > I have a question about IP on ZOS. Can you guys find out if the send buffer and receive buffer is > at the subtask level or the stream level? Buffers are at the stream level. The amount of buffer space for each stre= am is determined by the TcpConfig TCPMAXRCVBufrsize, TCPRCVBufrsize and = TCPSendBufrsize values (the default) or by using the setsockopt(). Increasing the buffer sizes does not allocate or consume any additional s= torage in the user address space. The data is saved in the TCPIP address = space or CSM dataspace. > From the display below I'm trying to find out there is a separate send buffer and receive buffer > for the streams I have highlighted in red OR if there is only one send buffer and one receive > buffer for the subtask that both streams share. There are separate buffers for each stream. The data for each stream is = saved in the TCPIP address space dynamically. This means that there is n= o storage consumed if a stream is not actively sending or receiving data. The buffer sizes determine the maximum amount of storage saved for each s= tream of a connection. See the IP Configuration Reference for more information: a href=" ---Links-Are-Forbidden--- Mike Stayton z/OS Communications Server mws@us.ibm.com ---------------



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Thank you Mike, this is perfect. Dana -----Original Message----- From: a href="mailto:IBM TCP/IP List [mailto:IBMTCP-L@VM.MARIST.EDU] On Behalf Of Mike W=">IBM TCP/IP List [mailto:IBMTCP-L@VM.MARIST.EDU] On Behalf Of Mike W=/a> Stayton Sent: Thursday, April 18, 2013 10:13 AM To: IBMTCP-L@VM.MARIST.EDU Subject: Re: [IBMTCP-L] Question about buffers > I have a question about IP on ZOS. Can you guys find out if the send buffer and receive buffer is > at the subtask level or the stream level? Buffers are at the stream level. The amount of buffer space for each stre= am is determined by the TcpConfig TCPMAXRCVBufrsize, TCPRCVBufrsize and = TCPSendBufrsize values (the default) or by using the setsockopt(). Increasing the buffer sizes does not allocate or consume any additional s= torage in the user address space. The data is saved in the TCPIP address = space or CSM dataspace. > From the display below I'm trying to find out there is a separate send buffer and receive buffer > for the streams I have highlighted in red OR if there is only one send buffer and one receive > buffer for the subtask that both streams share. There are separate buffers for each stream. The data for each stream is = saved in the TCPIP address space dynamically. This means that there is n= o storage consumed if a stream is not actively sending or receiving data. The buffer sizes determine the maximum amount of storage saved for each s= tream of a connection. See the IP Configuration Reference for more information: a href=" ---Links-Are-Forbidden--- Mike Stayton z/OS Communications Server mws@us.ibm.com ---------------






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