David McDaniel wrote:
A binary is less 4M and demonstrates high ITLB miss rates. I decide to
experiment with making it larger to address the issue.
The first approach was to assemble the following .s file and link it into the
target binaries:
.section ".text"
.align 4096*1024
.skip 8
This resulted in an enlarged binary which does get mapped on 4M boundary and which results in ~50% reduction in ITLB_miss rates as reported by cputrack.
Thinking this business of linking in bogus .o files to be pretty ugly, I tried to use a mapfile as follows to perhaps more effectively and simply achieve the same result:
text = A0x400000;
text = R0x400000;
This also results in an enlarged binary but does *not* result in a reduction
in ITLB_miss rates. Upon further investigation, it appears that the mapfile
option does not behave as expected:
...
What type of machine are you trying to do this on?
- Eric
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