W dniu 2013-04-05 06:51, suresh chacko pisze:
Points we shared and learnt. Thanks to all for this knowledge share.
1. CP is kneecapped and expensive.
Not always kneecapped, especially not true in bigger installations!
Reason: kneecapped CPs can be configured in small machines (z10BC, z114)
and in small configurations of big machine (up to single book).
For z10EC it will be every capacity model above 612, for z196 every
model above 615.
Linux will run faster on IFL.
Only when comparing kneecapped (slowed down) CP to IFL. In case of
full-speed CP it is *exactly the same* in speed as IFL.
2. CP and IFL's can be shared in single LPAR
3. Proper sizing of Memory, Paging, SRN resources.
4. If still high usage caused by Linux instance - adding additional IFL
5. No restriction to have more number of IFLs than CP.
6. Review the WAIT COMPLETION flag
I have a question..
In this case, Will it be helpful to implement IRD in the shared LPAR of CP
and IFLs?
No, it won't be helpful, because it is impossible. IRD requires Parallel
Sysplex, which means z/OS only. IFL is for Linux (and z/VM).--
Radoslaw Skorupka
Lodz, Poland
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