So how do you control the the offload on the individual OSAs ? By issuing an OBEYFILE on a different profile and then issuing a stop/start on the device ?
Earl "Zimmerman, Tom" <[EMAIL PROTECTED]> Sent by: IBM Mainframe Discussion List <[email protected]> 06/09/2008 02:11 PM Please respond to IBM Mainframe Discussion List <[email protected]> To [email protected] cc Subject Re: TCPIP Segmentation Offload We have segmentation offload, microcode level 087D, running on eight of our OSAs for the last two weeks. We have eight LPARs, each with one tcpip stack. Each stack has two OSAs connected to it, with one running segmentation offlad and the other without it. It will be some time in JULY before I start segmentation offload on the second OSA. Tom Zimmerman -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Maarten Slegtenhorst Sent: Sunday, June 08, 2008 3:48 AM To: [email protected] Subject: Re: TCPIP Segmentation Offload John, /quote/ We enabled SEGMENTATIONOFFLOAD on the sandbox (z/OS 1.9) yesterday, but there's very little TCPIP load on the sandbox (still doing IVP of 1.9, and post-installation "cleanup"). Maybe we can cobble up something that should "stress" it to the breaking point (maybe FTP-ing some SMF offload datasets or sysdumps?). /quote/ We have a load of about 10% on the OSA's and still the segmentation offload managed to crash both shared osa's and managed to make most production-hosts unreachable. Of course this happened during the night in my standby week. :/ I wont activate it until I'm convinced that the risk of the same problems occuring is very very very small. -- Maarten Slegtenhorst ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. 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