The following message is a courtesy copy of an article
that has been posted to bit.listserv.ibm-main,alt.folklore.computers as well.


re:
http://www.garlic.com/~lynn/2010e.htmL#32 Need tool to zap core
http://www.garlic.com/~lynn/2010e.htmL#34 Need tool to zap core
http://www.garlic.com/~lynn/2010e.htmL#38 Need tool to zap core

old email menioning SIE in vm/811 (811 was a code name for 370/xa
because architecture documents dated nov78) ... aka vmtool which was
(originally) only for internal mvs/xa development and was never going
to be released to customers. Also some discussion of difference
between SIE in 3081 and Trout (trout was codename for 3090)
http://www.garlic.com/~lynn/2006j.html#email810630
in this post
http://www.garlic.com/~lynn/2006j.html#27 virtual memory

above also mentions part of SIE poor performance on 3081 was that it had
to be "paged in" (from the 3310/piccolo by the service processor).

another old email mentioning SIE in 3090
http://www.garlic.com/~lynn/2003j.html#email831118
in this post
http://www.garlic.com/~lynn/200ej.html#42 Flash 10208

another reference to SIE on 3090 still being expensive instruction
http://www.garlic.com/~lynn/2007c.html#email860121
in this post
http://www.garlic.com/~lynn/2007c.html#49 SVC

the above discusses potentially disabling for i/o interrupts.  as it
mentions .... I had done something similar a decade earlier ... would
dynamically change based on I/O interrupt rate crossing some
threshhold.

-- 
42yrs virtualization experience (since Jan68), online at home since Mar1970

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