10 Commits

Author SHA1 Message Date
Thomas Schatzl
2a8616c9d6 8035654: Add times for evacuation failure handling in "Other" time
Detailed breakdown of time spent in the evacuation failure handling phases to make the "Other" time roughly correspond to the sum of its parts.

Reviewed-by: jwilhelm, jmasa
2014-03-17 10:13:42 +01:00
Thomas Schatzl
80188ce0b2 8035398: Add card redirty time in "Other" time in G1
Show the time taken by card redirtying during GC in a new "Redirty Cards" line.

Reviewed-by: jwilhelm, brutisso
2014-03-17 10:13:27 +01:00
Thomas Schatzl
d3e28ca682 8027295: Free CSet takes ~50% of young pause time
Improve fast card cache iteration and avoid taking locks when freeing the collection set.

Reviewed-by: brutisso
2014-03-17 10:13:18 +01:00
Thomas Schatzl
329e55e7b0 8035406: Improve data structure for Code Cache remembered sets
Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time.

Reviewed-by: mgerdin, brutisso
2014-03-17 10:12:21 +01:00
John Cuthbertson
f63547bf71 7145569: G1: optimize nmethods scanning
Add a list of nmethods to the RSet for a region that contain references into the region. Skip scanning the code cache during root scanning and scan the nmethod lists during RSet scanning instead.

Reviewed-by: tschatzl, brutisso, mgerdin, twisti, kvn
2013-08-15 10:52:18 +02:00
John Cuthbertson
c38f8fc543 7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
Refactor G1's hot card cache and card counts table into their own files. Simplify the card counts table, including removing the encoding of the card index in each entry. The card counts table now has a 1:1 correspondence with the cards spanned by heap. Space for the card counts table is reserved from virtual memory (rather than C heap) during JVM startup and is committed/expanded when the heap is expanded. Changes were also reviewed-by Vitaly Davidovich.

Reviewed-by: tschatzl, jmasa
2013-05-09 11:16:39 -07:00
Bengt Rutisson
38f6de7a0c 8006242: G1: WorkerDataArray<T>::verify() too strict for double calculations
Also reviewed by vitalyd@gmail.com.

Reviewed-by: johnc, mgerdin
2013-01-16 12:46:27 +01:00
Jon Masamitsu
1ea36e2324 7200615: NPG: optimized VM build is broken
Reviewed-by: kvn
2012-09-25 07:05:55 -07:00
Bengt Rutisson
68bbfe24e7 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
Also reviewed by vitalyd@gmail.com. Introduced the WorkerDataArray class. Fixed some minor logging bugs.

Reviewed-by: johnc, mgerdin
2012-08-23 10:21:12 +02:00
Bengt Rutisson
3571ee23dc 7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
Also reviewed by: vitalyd@gmail.com. Move the timing out of G1CollectorPolicy into the G1GCPhaseTimes class

Reviewed-by: johnc
2012-07-11 22:47:38 +02:00