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| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 542384916 | |
| Max Chunk Size: 337614532 | |
| Number of Blocks: 58933 | |
| Av. Block Size: 9203 | |
| Tree Height: 124 | |
| Before GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 3297792 | |
| Max Chunk Size: 3297792 | |
| Number of Blocks: 1 | |
| Av. Block Size: 3297792 | |
| Tree Height: 1 | |
| 138323.261: [ParNew | |
| Desired survivor size 26836992 bytes, new threshold 4 (max 4) | |
| - age 1: 2206232 bytes, 2206232 total | |
| - age 2: 371632 bytes, 2577864 total | |
| - age 3: 426416 bytes, 3004280 total | |
| - age 4: 561680 bytes, 3565960 total | |
| : 430289K->4434K(471872K), 0.0270280 secs] 26103784K->25681405K(30667584K)After GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 541952273 | |
| Max Chunk Size: 337614532 | |
| Number of Blocks: 58930 | |
| Av. Block Size: 9196 | |
| Tree Height: 123 | |
| After GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 3297792 | |
| Max Chunk Size: 3297792 | |
| Number of Blocks: 1 | |
| Av. Block Size: 3297792 | |
| Tree Height: 1 | |
| , 0.0273530 secs] [Times: user=0.40 sys=0.00, real=0.03 secs] | |
| CMS: abort preclean due to time 2015-02-22T11:08:05.875+0000: 138324.866: [CMS-concurrent-abortable-preclean: 4.979/5.042 secs] [Times: user=8.30 sys=0.24, real=5.04 secs] | |
| 2015-02-22T16:46:15.254+0000: 158614.246: [GC Before GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 1900367996 | |
| Max Chunk Size: 337614532 | |
| Number of Blocks: 274663 | |
| Av. Block Size: 6918 | |
| Tree Height: 159 | |
| Before GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 3322368 | |
| Max Chunk Size: 3322368 | |
| Number of Blocks: 1 | |
| Av. Block Size: 3322368 | |
| Tree Height: 1 | |
| 158614.249: [ParNew | |
| Desired survivor size 26836992 bytes, new threshold 4 (max 4) | |
| - age 1: 1940824 bytes, 1940824 total | |
| - age 2: 1560536 bytes, 3501360 total | |
| - age 3: 1298344 bytes, 4799704 total | |
| - age 4: 1526128 bytes, 6325832 total | |
| : 430150K->9605K(471872K), 0.0313340 secs] 15139573K->14722203K(30667584K)After GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 1899973204 | |
| Max Chunk Size: 337614532 | |
| Number of Blocks: 274603 | |
| Av. Block Size: 6918 | |
| Tree Height: 159 | |
| After GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 3322368 | |
| Max Chunk Size: 3322368 | |
| Number of Blocks: 1 | |
| Av. Block Size: 3322368 | |
| Tree Height: 1 | |
| , 5.1768270 secs] [Times: user=0.39 sys=0.00, real=5.18 secs] | |
| 2015-02-22T16:46:48.471+0000: 158647.462: [GC Before GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 1897098753 | |
| Max Chunk Size: 337614532 | |
| Number of Blocks: 273583 | |
| Av. Block Size: 6934 | |
| Tree Height: 159 | |
| Before GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 3322368 | |
| Max Chunk Size: 3322368 | |
| Number of Blocks: 1 | |
| Av. Block Size: 3322368 | |
| Tree Height: 1 | |
| 158652.964: [ParNew | |
| Desired survivor size 26836992 bytes, new threshold 4 (max 4) | |
| - age 1: 2090072 bytes, 2090072 total | |
| - age 2: 1547712 bytes, 3637784 total | |
| - age 3: 4189456 bytes, 7827240 total | |
| - age 4: 1383752 bytes, 9210992 total | |
| : 432710K->12308K(471872K), 0.0294230 secs] 15169772K->14751155K(30667584K)After GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 1896915332 | |
| Max Chunk Size: 337614532 | |
| Number of Blocks: 273440 | |
| Av. Block Size: 6937 | |
| Tree Height: 159 | |
| After GC: | |
| Statistics for BinaryTreeDictionary: | |
| ------------------------------------ | |
| Total Free Space: 3322368 | |
| Max Chunk Size: 3322368 | |
| Number of Blocks: 1 | |
| Av. Block Size: 3322368 | |
| Tree Height: 1 | |
| , 0.0357520 secs] [Times: user=0.42 sys=0.00, real=5.54 secs] |
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| instance type: i2.4xlarge | |
| Kernel: Linux 3.2.0-76-virtual #111-Ubuntu SMP Tue Jan 13 22:33:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux | |
| Distributor ID: Ubuntu | |
| Description: Ubuntu 12.04.5 LTS | |
| Release: 12.04 | |
| Codename: precise | |
| Note: No swap is configured on these machines. Even though vm.swappiness = 0 | |
| echo never > /sys/kernel/mm/transparent_hugepage/enabled | |
| echo never > /sys/kernel/mm/transparent_hugepage/defrag | |
| sysctl -w vm.dirty_expire_centisecs=12000 | |
| sysctl -w vm.dirty_writeback_centisecs=500 | |
| sysctl -w vm.dirty_background_ratio=5 | |
| sysctl -w vm.dirty_ratio=80 | |
| echo 2 > /sys/block/xvd{b,c,d,e}/queue/rq_affinity | |
| echo noop > /sys/block/xvd{b,c,d,e}/queue/scheduler | |
| echo 256 > /sys/block/xvd{b,c,d,e}/queue/nr_requests | |
| echo 256 > /sys/block/xvd{b,c,d,e}/queue/read_ahead_kb | |
| Applied some recommendations found here. | |
| http://www.slideshare.net/cuonghuutran/gc-andpagescanattacksbylinux | |
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