Massimo Biancucci wrote: > After increasing the size of XML up to 150MB then I saw a little of zIIP >usage. Anyway, it would be interesting to know how IBM manages these >thresholds.
I don't have any inside information here, but it seems reasonable to infer that ostensibly zIIP eligible workload has to be "big enough" to become actually zIIP eligible. Otherwise you could end up with a perverse outcome: higher than necessary utilization of/on both engines. Cache-related factors may play a role. It's a bit like going to a fast food restaurant and picking up your order at the counter. "May I have one more packet of ketchup?" you ask. The cashier could just grab a packet of ketchup and drop it in your bag. Or the cashier could summon a ketchup specialist to the counter to assist you, the cashier would brief the ketchup specialist on your request, and the ketchup specialist would handle your request. Sometimes it's more efficient for everyone concerned when the cashier grabs the packet of ketchup directly. But if your request is "Would you add some more ketchup to all 6 of my hamburgers, please" then the ketchup specialist ought to get involved so the cashier can serve other customers more efficiently. — — — — — Timothy Sipples Senior Architect Digital Assets, Industry Solutions, and Cybersecurity IBM zSystems/LinuxONE, Asia-Pacific [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
