Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zDirector.cpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zHeap.cpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zPageAllocator.cpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zPageAllocator.hpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zPageCache.cpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

16 lines changed: 16 ins; 0 del; 0 mod; 197 unchg

Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zPageCache.hpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

4 lines changed: 4 ins; 0 del; 0 mod; 58 unchg

Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zPageCache.inline.hpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

13 lines changed: 13 ins; 0 del; 0 mod; 33 unchg

Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zRelocationSetSelector.cpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

13 lines changed: 13 ins; 0 del; 0 mod; 225 unchg

Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zRelocationSetSelector.hpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

5 lines changed: 5 ins; 0 del; 0 mod; 84 unchg

Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zStat.cpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

37 lines changed: 6 ins; 7 del; 24 mod; 1348 unchg

Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/zStat.hpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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Cdiffs Udiffs Sdiffs Frames Old New ----- Raw src/hotspot/share/gc/z/z_globals.hpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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------ ------ ------ ------ Old --- ----- --- .hgtags

590 lines changed: 0 ins; 590 del; 0 mod; 0 unchg

------ ------ ------ ------ --- New ----- Raw src/hotspot/share/gc/z/zPageCacheBalance.cpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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------ ------ ------ ------ --- New ----- Raw src/hotspot/share/gc/z/zPageCacheBalance.hpp

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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------ ------ ------ ------ --- New ----- Raw test/hotspot/jtreg/gc/z/TestAvoidPageCacheFlush.java

rev 53288 : Balance ZGC page cache to avoid page cache flush

Summary: Introduce option ZBalancePageCache
- Page cache flush happens if an object fails to allocate in the current
  page and fails to find a matched type of page in the page cache, which
  acquires a global lock in ZPageAllocator and makes some threads wait
  for its unlock (however, page cache flush is a time-consuming task).
- By enabling ZBalancePageCache, both small and medium pages in the page
  cache will be rebalanced by the predicted allocation pattern, which
  can alleviate the case that fails to find a matched type of page. This
  process is concurrent.

Test Plan: gc/z/TestAvoidPageCacheFlush.java

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This code review page was prepared using /home/denghui.ddh/openjdk/webrev.ksh (vers 25.18-hg+openjdk.java.net).