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Type: Enhancement
Resolution: Fixed
Priority: P3
Fix Version/s: hs15
Affects Version/s: 5.0u15, 5.0u16
Component/s: hotspot
Labels:

Subcomponent:
gc
Introduced In Build:
1.4.2
Introduced In Version:

1.4.2
Resolved In Build:
b01
CPU:

generic, x86
OS:

generic, windows_2003
Verification:
Verified

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-2173040	7	Y. Ramakrishna	P3	Closed	Fixed	b47
JDK-2180455	6u18	Y. Ramakrishna	P3	Resolved	Fixed	b01
JDK-2177788	6u15	Chris Phillips	P3	Resolved	Fixed	b01
JDK-2177880	6u14-rev	Chris Phillips	P3	Resolved	Fixed	b09
JDK-2172432	6u13-rev	Chris Phillips	P3	Resolved	Fixed	b08
JDK-2176460	5.0u19	Chris Phillips	P3	Resolved	Fixed	b02
JDK-2171430	5.0u18-rev	Chris Phillips	P2	Resolved	Fixed	b05
JDK-2177787	hs14.1	Chris Phillips	P3	Resolved	Fixed	b01
JDK-2177879	hs14	Chris Phillips	P3	Resolved	Fixed	b17
JDK-2177508	hs11.3	Chris Phillips	P3	Resolved	Fixed	b07

The expected complexity for completely draining a long list
can be reduced from quadratic to linear time when the
contention is low. The current code causes quadratic
complexity even when there is no contention for the overflow list.

Should check other collectors to see if the same problem
exists in any of the other collectors (in particular ParNew
which also uses overflow lists in somewhat similar fashion).

backported by

JDK-2171430 Overflow list performance can be improved

Resolved

JDK-2172432 Overflow list performance can be improved

Resolved

JDK-2176460 Overflow list performance can be improved

Resolved

JDK-2177508 Overflow list performance can be improved

Resolved

JDK-2177787 Overflow list performance can be improved

Resolved

JDK-2177788 Overflow list performance can be improved

Resolved

JDK-2177879 Overflow list performance can be improved

Resolved

JDK-2177880 Overflow list performance can be improved

Resolved

JDK-2180455 Overflow list performance can be improved

Resolved

JDK-2173040 Overflow list performance can be improved

Closed

relates to

JDK-6787254 Work queue capacity can be increased substantially on some platforms

Resolved

JDK-6797058 Consolidate overflow list code used in ParNew and CMS

Closed

(5 backported by, 2 relates to)

Assignee:: Y. Ramakrishna

Reporter:: Y. Ramakrishna

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Created:: 2008-12-17 11:05

Updated:: 2011-03-07 12:48

Resolved:: 2011-03-07 12:48

Imported:: 17/Sep/12 3:17 AM

Indexed:: 19/Jul/12 7:28 PM

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