Take 2 : CRR: 7027766: G1: introduce flag to dump the liveness information per region at the end of marking (S)
Tony Printezis
tony.printezis at oracle.com
Tue Mar 29 16:21:15 UTC 2011
Hi all,
First, thanks to Igor for a very prompt review.
After I opened the previous version for code review I realized that if
we want to create any graphs based on this information having the
information about all the regions in a humongous region series grouped
into a single region (which is what I did before) will make the parser
work a bit harder to extract the per-region information (and we'd like
that information to track what happens to an individual region over
time). So, I changed the output format to show the information for
humongous regions separately for each individual region.
Here's a quick summary of the changes:
- Now there are two tags for humongous regions: HUMS (starts humongous)
and HUMC (continues humongous)
- I removed the capacity per-region as now all the regions have the same
capacity which is the region size. So we can save some space there.
- Minor cosmetic changes.
- I actually turned the flag off by default (I had accidentally set its
default value to true before).
Latest webrev here:
http://cr.openjdk.java.net/~tonyp/7027766/webrev.1/
I attached example output from the new workspace (64-bit this time, and
I made sure it also includes some humongous regions).
Tony
Tony Printezis wrote:
> Hi,
>
> I'd like a couple of reviewers to have a look at this change:
>
> http://cr.openjdk.java.net/~tonyp/7027766/webrev.0/
>
> I ended up repurposing the existing develop flag
> G1PrintRegionLivenessInfo for this (I had actually forgotten it was
> there!) and I print the liveness information at the end of marking twice:
>
> - Info for all regions after we finalize the marking information,
> which means we have both the latest marking information as well as the
> previous marking information available.
> - The same info but for all sorted old regions.
>
> I attached example output.
>
> Tony
-------------- next part --------------
### PHASE Post-Marking @ 2.806
### HEAP committed: 0x00000000f0e00000-0x00000000fae00000 reserved: 0x00000000f0e00000-0x00000000fae00000 region-size: 1048576
###
### type address-range used prev-live next-live gc-eff
### FREE 0x00000000f0e00000-0x00000000f0f00000 0 0 0 0.0
### HUMS 0x00000000f0f00000-0x00000000f1000000 1048576 1048576 0 0.0
### HUMC 0x00000000f1000000-0x00000000f1100000 1048576 1048576 0 0.0
### HUMC 0x00000000f1100000-0x00000000f1200000 1048576 1048576 0 0.0
### HUMC 0x00000000f1200000-0x00000000f1300000 8208 8208 0 0.0
### HUMS 0x00000000f1300000-0x00000000f1400000 1048576 1048576 0 0.0
### HUMC 0x00000000f1400000-0x00000000f1500000 1048576 1048576 0 0.0
### HUMC 0x00000000f1500000-0x00000000f1600000 1048576 1048576 0 0.0
### HUMC 0x00000000f1600000-0x00000000f1700000 8208 8208 0 0.0
### FREE 0x00000000f1700000-0x00000000f1800000 0 0 0 0.0
### HUMS 0x00000000f1800000-0x00000000f1900000 1048576 1048576 0 0.0
### HUMC 0x00000000f1900000-0x00000000f1a00000 1048576 1048576 0 0.0
### HUMC 0x00000000f1a00000-0x00000000f1b00000 759824 759824 0 0.0
### HUMS 0x00000000f1b00000-0x00000000f1c00000 1048576 1048576 0 0.0
### HUMC 0x00000000f1c00000-0x00000000f1d00000 1048576 1048576 0 0.0
### HUMC 0x00000000f1d00000-0x00000000f1e00000 759824 759824 0 0.0
### FREE 0x00000000f1e00000-0x00000000f1f00000 0 0 0 0.0
### HUMS 0x00000000f1f00000-0x00000000f2000000 962576 962576 0 0.0
### HUMS 0x00000000f2000000-0x00000000f2100000 962576 962576 0 0.0
### HUMS 0x00000000f2100000-0x00000000f2200000 1048576 1048576 0 0.0
### HUMC 0x00000000f2200000-0x00000000f2300000 231440 231440 0 0.0
### HUMS 0x00000000f2300000-0x00000000f2400000 1048576 1048576 0 0.0
### HUMC 0x00000000f2400000-0x00000000f2500000 231440 231440 0 0.0
### FREE 0x00000000f2500000-0x00000000f2600000 0 0 0 0.0
### HUMS 0x00000000f2600000-0x00000000f2700000 1048576 1048576 0 0.0
### HUMC 0x00000000f2700000-0x00000000f2800000 108560 108560 0 0.0
### HUMS 0x00000000f2800000-0x00000000f2900000 1048576 1048576 0 0.0
### HUMC 0x00000000f2900000-0x00000000f2a00000 108560 108560 0 0.0
### FREE 0x00000000f2a00000-0x00000000f2b00000 0 0 0 0.0
### HUMS 0x00000000f2b00000-0x00000000f2c00000 1048576 1048576 0 0.0
### HUMC 0x00000000f2c00000-0x00000000f2d00000 1048576 1048576 0 0.0
### HUMC 0x00000000f2d00000-0x00000000f2e00000 1048576 1048576 0 0.0
### HUMC 0x00000000f2e00000-0x00000000f2f00000 8208 8208 0 0.0
### HUMS 0x00000000f2f00000-0x00000000f3000000 1048576 1048576 0 0.0
### HUMC 0x00000000f3000000-0x00000000f3100000 1048576 1048576 0 0.0
### HUMC 0x00000000f3100000-0x00000000f3200000 1048576 1048576 0 0.0
### HUMC 0x00000000f3200000-0x00000000f3300000 8208 8208 0 0.0
### HUMS 0x00000000f3300000-0x00000000f3400000 1048576 1048576 0 0.0
### HUMC 0x00000000f3400000-0x00000000f3500000 1048576 1048576 0 0.0
### HUMC 0x00000000f3500000-0x00000000f3600000 759824 759824 0 0.0
### HUMS 0x00000000f3600000-0x00000000f3700000 1048576 1048576 0 0.0
### HUMC 0x00000000f3700000-0x00000000f3800000 1048576 1048576 0 0.0
### HUMC 0x00000000f3800000-0x00000000f3900000 759824 759824 0 0.0
### FREE 0x00000000f3900000-0x00000000f3a00000 0 0 0 0.0
### HUMS 0x00000000f3a00000-0x00000000f3b00000 962576 962576 0 0.0
### HUMS 0x00000000f3b00000-0x00000000f3c00000 962576 962576 0 0.0
### FREE 0x00000000f3c00000-0x00000000f3d00000 0 0 0 0.0
### HUMS 0x00000000f3d00000-0x00000000f3e00000 1048576 1048576 0 0.0
### HUMC 0x00000000f3e00000-0x00000000f3f00000 231440 231440 0 0.0
### HUMS 0x00000000f3f00000-0x00000000f4000000 1048576 1048576 0 0.0
### HUMC 0x00000000f4000000-0x00000000f4100000 231440 231440 0 0.0
### HUMS 0x00000000f4100000-0x00000000f4200000 1048576 1048576 0 0.0
### HUMC 0x00000000f4200000-0x00000000f4300000 108560 108560 0 0.0
### HUMS 0x00000000f4300000-0x00000000f4400000 1048576 1048576 0 0.0
### HUMC 0x00000000f4400000-0x00000000f4500000 108560 108560 0 0.0
### FREE 0x00000000f4500000-0x00000000f4600000 0 0 0 0.0
### HUMS 0x00000000f4600000-0x00000000f4700000 1048576 1048576 0 0.0
### HUMC 0x00000000f4700000-0x00000000f4800000 1048576 1048576 0 0.0
### HUMC 0x00000000f4800000-0x00000000f4900000 1048576 1048576 0 0.0
### HUMC 0x00000000f4900000-0x00000000f4a00000 8208 8208 0 0.0
### HUMS 0x00000000f4a00000-0x00000000f4b00000 1048576 1048576 0 0.0
### HUMC 0x00000000f4b00000-0x00000000f4c00000 1048576 1048576 0 0.0
### HUMC 0x00000000f4c00000-0x00000000f4d00000 1048576 1048576 0 0.0
### HUMC 0x00000000f4d00000-0x00000000f4e00000 8208 8208 0 0.0
### FREE 0x00000000f4e00000-0x00000000f4f00000 0 0 0 0.0
### HUMS 0x00000000f4f00000-0x00000000f5000000 1048576 1048576 0 0.0
### HUMC 0x00000000f5000000-0x00000000f5100000 1048576 1048576 0 0.0
### HUMC 0x00000000f5100000-0x00000000f5200000 759824 759824 0 0.0
### HUMS 0x00000000f5200000-0x00000000f5300000 1048576 1048576 0 0.0
### HUMC 0x00000000f5300000-0x00000000f5400000 1048576 1048576 0 0.0
### HUMC 0x00000000f5400000-0x00000000f5500000 759824 759824 0 0.0
### HUMS 0x00000000f5500000-0x00000000f5600000 962576 962576 0 0.0
### HUMS 0x00000000f5600000-0x00000000f5700000 962576 962576 0 0.0
### FREE 0x00000000f5700000-0x00000000f5800000 0 0 0 0.0
### HUMS 0x00000000f5800000-0x00000000f5900000 1048576 1048576 0 0.0
### HUMC 0x00000000f5900000-0x00000000f5a00000 231440 231440 0 0.0
### HUMS 0x00000000f5a00000-0x00000000f5b00000 1048576 1048576 0 0.0
### HUMC 0x00000000f5b00000-0x00000000f5c00000 231440 231440 0 0.0
### FREE 0x00000000f5c00000-0x00000000f5d00000 0 0 0 0.0
### HUMS 0x00000000f5d00000-0x00000000f5e00000 1048576 1048576 0 0.0
### HUMC 0x00000000f5e00000-0x00000000f5f00000 108560 108560 0 0.0
### HUMS 0x00000000f5f00000-0x00000000f6000000 1048576 1048576 0 0.0
### HUMC 0x00000000f6000000-0x00000000f6100000 108560 108560 0 0.0
### HUMS 0x00000000f6100000-0x00000000f6200000 1048576 1048576 0 0.0
### HUMC 0x00000000f6200000-0x00000000f6300000 1048576 1048576 0 0.0
### HUMC 0x00000000f6300000-0x00000000f6400000 1048576 1048576 0 0.0
### HUMC 0x00000000f6400000-0x00000000f6500000 8208 8208 0 0.0
### HUMS 0x00000000f6500000-0x00000000f6600000 1048576 1048576 0 0.0
### HUMC 0x00000000f6600000-0x00000000f6700000 1048576 1048576 0 0.0
### HUMC 0x00000000f6700000-0x00000000f6800000 1048576 1048576 0 0.0
### HUMC 0x00000000f6800000-0x00000000f6900000 8208 8208 0 0.0
### FREE 0x00000000f6900000-0x00000000f6a00000 0 0 0 0.0
### HUMS 0x00000000f6a00000-0x00000000f6b00000 1048576 1048576 0 0.0
### HUMC 0x00000000f6b00000-0x00000000f6c00000 1048576 1048576 0 0.0
### HUMC 0x00000000f6c00000-0x00000000f6d00000 759824 759824 0 0.0
### HUMS 0x00000000f6d00000-0x00000000f6e00000 1048576 1048576 0 0.0
### HUMC 0x00000000f6e00000-0x00000000f6f00000 1048576 1048576 0 0.0
### HUMC 0x00000000f6f00000-0x00000000f7000000 759824 759824 0 0.0
### FREE 0x00000000f7000000-0x00000000f7100000 0 0 0 0.0
### HUMS 0x00000000f7100000-0x00000000f7200000 962576 962576 0 0.0
### HUMS 0x00000000f7200000-0x00000000f7300000 962576 962576 0 0.0
### HUMS 0x00000000f7300000-0x00000000f7400000 1048576 1048576 0 0.0
### HUMC 0x00000000f7400000-0x00000000f7500000 231440 231440 0 0.0
### HUMS 0x00000000f7500000-0x00000000f7600000 1048576 1048576 0 0.0
### HUMC 0x00000000f7600000-0x00000000f7700000 231440 231440 0 0.0
### FREE 0x00000000f7700000-0x00000000f7800000 0 0 0 0.0
### HUMS 0x00000000f7800000-0x00000000f7900000 1048576 1048576 0 0.0
### HUMC 0x00000000f7900000-0x00000000f7a00000 108560 108560 0 0.0
### HUMS 0x00000000f7a00000-0x00000000f7b00000 1048576 1048576 0 0.0
### HUMC 0x00000000f7b00000-0x00000000f7c00000 108560 108560 0 0.0
### FREE 0x00000000f7c00000-0x00000000f7d00000 0 0 0 0.0
### HUMS 0x00000000f7d00000-0x00000000f7e00000 1048576 1048576 0 0.0
### HUMC 0x00000000f7e00000-0x00000000f7f00000 1048576 1048576 0 0.0
### HUMC 0x00000000f7f00000-0x00000000f8000000 1048576 1048576 0 0.0
### HUMC 0x00000000f8000000-0x00000000f8100000 8208 8208 0 0.0
### HUMS 0x00000000f8100000-0x00000000f8200000 1048576 1048576 0 0.0
### HUMC 0x00000000f8200000-0x00000000f8300000 1048576 1048576 0 0.0
### HUMC 0x00000000f8300000-0x00000000f8400000 1048576 1048576 0 0.0
### HUMC 0x00000000f8400000-0x00000000f8500000 8208 8208 0 0.0
### HUMS 0x00000000f8500000-0x00000000f8600000 1048576 1048576 0 0.0
### HUMC 0x00000000f8600000-0x00000000f8700000 1048576 1048576 0 0.0
### HUMC 0x00000000f8700000-0x00000000f8800000 759824 759824 0 0.0
### HUMS 0x00000000f8800000-0x00000000f8900000 1048576 1048576 0 0.0
### HUMC 0x00000000f8900000-0x00000000f8a00000 1048576 1048576 0 0.0
### HUMC 0x00000000f8a00000-0x00000000f8b00000 759824 759824 0 0.0
### FREE 0x00000000f8b00000-0x00000000f8c00000 0 0 0 0.0
### HUMS 0x00000000f8c00000-0x00000000f8d00000 962576 962576 0 0.0
### HUMS 0x00000000f8d00000-0x00000000f8e00000 962576 962576 0 0.0
### FREE 0x00000000f8e00000-0x00000000f8f00000 0 0 0 0.0
### FREE 0x00000000f8f00000-0x00000000f9000000 0 0 0 0.0
### FREE 0x00000000f9000000-0x00000000f9100000 0 0 0 0.0
### HUMS 0x00000000f9100000-0x00000000f9200000 1048576 1048576 0 0.0
### HUMC 0x00000000f9200000-0x00000000f9300000 231440 231440 0 0.0
### HUMS 0x00000000f9300000-0x00000000f9400000 1048576 1048576 0 0.0
### HUMC 0x00000000f9400000-0x00000000f9500000 231440 231440 0 0.0
### HUMS 0x00000000f9500000-0x00000000f9600000 1048576 1048576 0 0.0
### HUMC 0x00000000f9600000-0x00000000f9700000 108560 108560 0 0.0
### HUMS 0x00000000f9700000-0x00000000f9800000 1048576 1048576 0 0.0
### HUMC 0x00000000f9800000-0x00000000f9900000 108560 108560 0 0.0
### FREE 0x00000000f9900000-0x00000000f9a00000 0 0 0 0.0
### FREE 0x00000000f9a00000-0x00000000f9b00000 0 0 0 0.0
### FREE 0x00000000f9b00000-0x00000000f9c00000 0 0 0 0.0
### FREE 0x00000000f9c00000-0x00000000f9d00000 0 0 0 0.0
### FREE 0x00000000f9d00000-0x00000000f9e00000 0 0 0 0.0
### FREE 0x00000000f9e00000-0x00000000f9f00000 0 0 0 0.0
### FREE 0x00000000f9f00000-0x00000000fa000000 0 0 0 0.0
### FREE 0x00000000fa000000-0x00000000fa100000 0 0 0 0.0
### FREE 0x00000000fa100000-0x00000000fa200000 0 0 0 0.0
### FREE 0x00000000fa200000-0x00000000fa300000 0 0 0 0.0
### FREE 0x00000000fa300000-0x00000000fa400000 0 0 0 0.0
### FREE 0x00000000fa400000-0x00000000fa500000 0 0 0 0.0
### FREE 0x00000000fa500000-0x00000000fa600000 0 0 0 0.0
### FREE 0x00000000fa600000-0x00000000fa700000 0 0 0 0.0
### OLD 0x00000000fa700000-0x00000000fa800000 1048576 1048576 1046336 0.0
### SURV 0x00000000fa800000-0x00000000fa900000 1048576 1048576 1018280 0.0
### SURV 0x00000000fa900000-0x00000000faa00000 1048576 1048576 1047328 0.0
### OLD 0x00000000faa00000-0x00000000fab00000 1048576 1048576 1047648 0.0
### OLD 0x00000000fab00000-0x00000000fac00000 1048576 1048576 1021256 0.0
### OLD 0x00000000fac00000-0x00000000fad00000 458752 458752 372536 0.0
### EDEN 0x00000000fad00000-0x00000000fae00000 906328 906328 906328 0.0
###
### SUMMARY capacity: 160.00 MB used: 96.05 MB / 60.03 % prev-live: 96.05 MB / 60.03 % next-live: 6.16 MB / 3.85 %
### PHASE Post-Sorting @ 2.807
### HEAP committed: 0x00000000f0e00000-0x00000000fae00000 reserved: 0x00000000f0e00000-0x00000000fae00000 region-size: 1048576
###
### type address-range used prev-live next-live gc-eff
### OLD 0x00000000fac00000-0x00000000fad00000 458752 372536 0 10966.5
### OLD 0x00000000fab00000-0x00000000fac00000 1048576 1021256 0 1442.0
### OLD 0x00000000fa700000-0x00000000fa800000 1048576 1046336 0 82.2
### OLD 0x00000000faa00000-0x00000000fab00000 1048576 1047648 0 33.8
###
### SUMMARY capacity: 4.00 MB used: 3.44 MB / 85.94 % prev-live: 3.33 MB / 83.16 % next-live: 0.00 MB / 0.00 %
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