The IBM z Systems Processor Optimization Primer v2 by C. K. Shum
supports your assertion. One could argue that grouping all
literals/constants so they are only in the D-cache and not in I-cache is
a slightly more efficient use of total cache, assuming other
literals/constants in that D-cache line will also be referenced. But
it's probably a moving target; i believe I recall that I read/heard that
the translation table referenced by TRT will be placed in I-cache.
On 2018-08-01 9:17 PM, Christopher Y. Blaicher wrote (snipped):
Inline data is no more expensive than data in another page. In either case, the
reference to the data requires a cache line load to the D-cache, but does not
invalidate/disturb the I-cache.
Gary Weinhold
Senior Application Architect
DATAKINETICS | Data Performance & Optimization
Phone +1.613.523.5500 x216
Email: weinh...@dkl.com
Visit us online at www.DKL.com
E-mail Notification: The information contained in this email and any attachments is confidential and may be subject to copyright or other intellectual property protection. If you are not the intended recipient, you are not authorized to use or disclose this information, and we request that you notify us by reply mail or telephone and delete the original message from your mail system.
