Date: Mon, 25 Feb 2002 18:37:44 -0800 (PST) From: Jake Burkholder <jake@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sparc64/include tsb.h src/sys/sparc64/sparc64 pmap.c Message-ID: <200202260237.g1Q2biY25704@freefall.freebsd.org>
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jake 2002/02/25 18:37:43 PST
Modified files:
sys/sparc64/include tsb.h
sys/sparc64/sparc64 pmap.c
Log:
Allow the user tsb to span multiple pages. Make the default 2 pages for now
until we do some testing to see what's best. This gives a massive reduction
in system time for processes with a relatively large working set. The size
of the tsb directly affects the rss size that a user process can keep mapped.
When it starts to get full replacements occur and the process takes a lot of
soft vm faults. Increasing the default from 1 page to 2 gives the following
before and after numbers for compiling vfs_bio.c:
before:
14.27 real 6.56 user 5.69 sys
after:
8.57 real 6.11 user 1.62 sys
This should make self hosted builds more tolerable.
Revision Changes Path
1.10 +3 -1 src/sys/sparc64/include/tsb.h
1.31 +27 -25 src/sys/sparc64/sparc64/pmap.c
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