memory management talk + patches for femalloc+xtbench
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* [PATCH] README: updates about overcommit + release
@ 2014-09-04  4:15 Eric Wong
  0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2014-09-04  4:15 UTC (permalink / raw)
  To: mm; +Cc: Eric Wong

---
 README | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/README b/README
index b783514..9be317d 100644
--- a/README
+++ b/README
@@ -38,7 +38,8 @@ is recommended.  We will fix this.
 
 Overheads for small allocations is large, we will fix this.
 
-We should work well on systems VM overcommit disabled, will fix
+We should avoid using too much space for for systems with overcommit
+disabled, will fix.
 
 We will support applications which spawn many more threads than CPUs,
 as we realize it is often easier to spawn extra threads to deal with
@@ -51,7 +52,8 @@ probably needs fixing as the related ptmalloc2 (from glibc) behaves
 horribly sometimes.
 
 Memory is not released back to the OS automatically, only via
-calls to `malloc_trim'.
+calls to `malloc_trim'.  Note: releasing memory back to the OS only to
+re-acquire it again is expensive.
 
 Linux 2.6-and later only for now, FreeBSD support coming.
 
-- 
EW


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