stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8254699: Suboptimal PreTouchParallelChunkSize defaults and limits

Browse Source 
Reviewed-by: tschatzl, sjohanss
This commit is contained in:
Amit Pawar 2020-12-03 19:05:04 +00:00 committed by Thomas Schatzl
parent e29ee5b8a5
commit 805d05812c
5 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/hotspot/os/aix/globals_aix.hpp
View File

@ -86,6 +86,7 @@
// UseLargePages means nothing, for now, on AIX. // UseLargePages means nothing, for now, on AIX.
// Use Use64KPages or Use16MPages instead. // Use Use64KPages or Use16MPages instead.
define_pd_global(size_t, PreTouchParallelChunkSize, 1 * G);
define_pd_global(bool, UseLargePages, false); define_pd_global(bool, UseLargePages, false);
define_pd_global(bool, UseLargePagesIndividualAllocation, false); define_pd_global(bool, UseLargePagesIndividualAllocation, false);
define_pd_global(bool, UseThreadPriorities, true) ; define_pd_global(bool, UseThreadPriorities, true) ;

1
src/hotspot/os/bsd/globals_bsd.hpp
View File

@ -42,6 +42,7 @@
// Defines Bsd-specific default values. The flags are available on all // Defines Bsd-specific default values. The flags are available on all
// platforms, but they may have different default values on other platforms. // platforms, but they may have different default values on other platforms.
// //
define_pd_global(size_t, PreTouchParallelChunkSize, 1 * G);
define_pd_global(bool, UseLargePages, false); define_pd_global(bool, UseLargePages, false);
define_pd_global(bool, UseLargePagesIndividualAllocation, false); define_pd_global(bool, UseLargePagesIndividualAllocation, false);
define_pd_global(bool, UseThreadPriorities, true) ; define_pd_global(bool, UseThreadPriorities, true) ;

1
src/hotspot/os/linux/globals_linux.hpp
View File

@ -90,6 +90,7 @@
// Defines Linux-specific default values. The flags are available on all // Defines Linux-specific default values. The flags are available on all
// platforms, but they may have different default values on other platforms. // platforms, but they may have different default values on other platforms.
// //
define_pd_global(size_t, PreTouchParallelChunkSize, 4 * M);
define_pd_global(bool, UseLargePages, false); define_pd_global(bool, UseLargePages, false);
define_pd_global(bool, UseLargePagesIndividualAllocation, false); define_pd_global(bool, UseLargePagesIndividualAllocation, false);
define_pd_global(bool, UseThreadPriorities, true) ; define_pd_global(bool, UseThreadPriorities, true) ;

1
src/hotspot/os/windows/globals_windows.hpp
View File

@ -45,6 +45,7 @@ product(bool, UseOSErrorReporting, false, \
// Defines Windows-specific default values. The flags are available on all // Defines Windows-specific default values. The flags are available on all
// platforms, but they may have different default values on other platforms. // platforms, but they may have different default values on other platforms.
// //
define_pd_global(size_t, PreTouchParallelChunkSize, 1 * G);
define_pd_global(bool, UseLargePages, false); define_pd_global(bool, UseLargePages, false);
define_pd_global(bool, UseLargePagesIndividualAllocation, true); define_pd_global(bool, UseLargePagesIndividualAllocation, true);
define_pd_global(bool, UseThreadPriorities, true) ; define_pd_global(bool, UseThreadPriorities, true) ;

4
src/hotspot/share/gc/shared/gc_globals.hpp
View File

@ -200,9 +200,9 @@
product(bool, AlwaysPreTouch, false, \ product(bool, AlwaysPreTouch, false, \
"Force all freshly committed pages to be pre-touched") \ "Force all freshly committed pages to be pre-touched") \
\ \
product(size_t, PreTouchParallelChunkSize, 1 * G, \ product_pd(size_t, PreTouchParallelChunkSize, \
"Per-thread chunk size for parallel memory pre-touch.") \ "Per-thread chunk size for parallel memory pre-touch.") \
range(1, SIZE_MAX / 2) \ range(4*K, SIZE_MAX / 2) \
\ \
/* where does the range max value of (max_jint - 1) come from? */ \ /* where does the range max value of (max_jint - 1) come from? */ \
product(size_t, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ product(size_t, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \