aurora-reviews mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From David McLaughlin <da...@dmclaughlin.com>
Subject Re: Review Request 52669: Move the H2 database off heap.
Date Mon, 17 Apr 2017 16:53:50 GMT


> On April 17, 2017, 11:09 a.m., Stephan Erb wrote:
> > David, you mentioned on the mailinglist that off-heap storage only offered marginal
improvements. I suppse I can therefore discard this patch?

We'll give it one last shot in our scale test environment (it finally looks like we've been
able to reproduce real GC issues) and then I'll confirm.


- David


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/52669/#review172078
-----------------------------------------------------------


On Oct. 11, 2016, 6:17 p.m., Stephan Erb wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/52669/
> -----------------------------------------------------------
> 
> (Updated Oct. 11, 2016, 6:17 p.m.)
> 
> 
> Review request for Aurora, David McLaughlin, John Sirois, and Zameer Manji.
> 
> 
> Repository: aurora
> 
> 
> Description
> -------
> 
> This experiment is inspired by David's comment: "I don’t think the
> storage engine matters. We just need to be able to offload it from
> the Scheduler JVM. The problem with H2 isn’t SQL or anything else,
> it’s the GC pressure."
> 
> Basic idea is to switch to another storage backend: "nioMemFS stores
> data outside of the VM's heap - useful for large memory DBs without
> incurring GC costs" (http://www.h2database.com/html/advanced.html)
> 
> Our micro-benchmarks look promising
> 
> Current Master (on-heap db with latest versions):
> 
> TaskStoreBenchmarks.DBFetchTasksBenchmark.run                         N/A          N/A
        N/A       10000  thrpt    5  72851.249 ± 15794.210  ops/s
> TaskStoreBenchmarks.DBFetchTasksBenchmark.run                         N/A          N/A
        N/A       50000  thrpt    5  31626.929 ± 17326.988  ops/s
> TaskStoreBenchmarks.DBFetchTasksBenchmark.run                         N/A          N/A
        N/A      100000  thrpt    5      0.078 ±     0.013  ops/s
> TaskStoreBenchmarks.MemFetchTasksBenchmark.run                        N/A          N/A
        N/A       10000  thrpt    5    414.135 ±   315.838  ops/s
> TaskStoreBenchmarks.MemFetchTasksBenchmark.run                        N/A          N/A
        N/A       50000  thrpt    5     68.643 ±    24.303  ops/s
> TaskStoreBenchmarks.MemFetchTasksBenchmark.run                        N/A          N/A
        N/A      100000  thrpt    5     32.032 ±    13.870  ops/s
> UpdateStoreBenchmarks.JobDetailsBenchmark.run                         N/A         1000
        N/A         N/A  thrpt    5    143.981 ±    78.985  ops/s
> UpdateStoreBenchmarks.JobDetailsBenchmark.run                         N/A         5000
        N/A         N/A  thrpt    5     35.224 ±    25.593  ops/s
> UpdateStoreBenchmarks.JobDetailsBenchmark.run                         N/A        10000
        N/A         N/A  thrpt    5     18.869 ±     3.318  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                      1          N/A
        N/A         N/A  thrpt    5     36.013 ±    19.743  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                     10          N/A
        N/A         N/A  thrpt    5     33.813 ±    11.216  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                    100          N/A
        N/A         N/A  thrpt    5     20.516 ±    10.526  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                   1000          N/A
        N/A         N/A  thrpt    5     16.564 ±     2.993  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
         10         N/A  thrpt    5     32.399 ±    21.310  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
        100         N/A  thrpt    5     35.518 ±     7.468  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
       1000         N/A  thrpt    5     19.757 ±    10.035  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
      10000         N/A  thrpt    5     10.849 ±    10.660  ops/s
> 
> This patch (off-heap db):
> 
> Benchmark                                             (instanceOverrides)  (instances)
 (metadata)  (numTasks)   Mode  Cnt      Score       Error  Units
> TaskStoreBenchmarks.DBFetchTasksBenchmark.run                         N/A          N/A
        N/A       10000  thrpt    5  77746.436 ± 47191.240  ops/s
> TaskStoreBenchmarks.DBFetchTasksBenchmark.run                         N/A          N/A
        N/A       50000  thrpt    5  70099.087 ± 37223.642  ops/s
> TaskStoreBenchmarks.DBFetchTasksBenchmark.run                         N/A          N/A
        N/A      100000  thrpt    5  30461.428 ± 22964.261  ops/s
> TaskStoreBenchmarks.MemFetchTasksBenchmark.run                        N/A          N/A
        N/A       10000  thrpt    5    335.302 ±   229.328  ops/s
> TaskStoreBenchmarks.MemFetchTasksBenchmark.run                        N/A          N/A
        N/A       50000  thrpt    5     61.443 ±    24.280  ops/s
> TaskStoreBenchmarks.MemFetchTasksBenchmark.run                        N/A          N/A
        N/A      100000  thrpt    5     32.129 ±    13.067  ops/s
> UpdateStoreBenchmarks.JobDetailsBenchmark.run                         N/A         1000
        N/A         N/A  thrpt    5    411.866 ±   396.308  ops/s
> UpdateStoreBenchmarks.JobDetailsBenchmark.run                         N/A         5000
        N/A         N/A  thrpt    5     92.208 ±    65.238  ops/s
> UpdateStoreBenchmarks.JobDetailsBenchmark.run                         N/A        10000
        N/A         N/A  thrpt    5     49.870 ±    44.519  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                      1          N/A
        N/A         N/A  thrpt    5     90.074 ±    31.360  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                     10          N/A
        N/A         N/A  thrpt    5    114.224 ±    48.576  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                    100          N/A
        N/A         N/A  thrpt    5    108.767 ±    25.154  ops/s
> UpdateStoreBenchmarks.JobInstructionsBenchmark.run                   1000          N/A
        N/A         N/A  thrpt    5     45.995 ±    14.795  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
         10         N/A  thrpt    5     72.343 ±    77.696  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
        100         N/A  thrpt    5     84.984 ±    27.971  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
       1000         N/A  thrpt    5     89.819 ±    44.923  ops/s
> UpdateStoreBenchmarks.JobUpdateMetadataBenchmark.run                  N/A          N/A
      10000         N/A  thrpt    5     31.670 ±    15.236  ops/s
> 
> 
> Please be aware: The values seen here will not really carry over to
> real world usage. It would therefore be awesome if one of you could
> test this on a larger cluster!
> 
> 
> Diffs
> -----
> 
>   src/main/java/org/apache/aurora/scheduler/storage/db/DbModule.java e7287cec28e7b8ca978c506bfe821f261bc0ac26

> 
> 
> Diff: https://reviews.apache.org/r/52669/diff/4/
> 
> 
> Testing
> -------
> 
> `./gradlew build`
> `./gradlew jmh -Pbenchmarks='UpdateStoreBenchmarks.*|TaskStoreBenchmarks.*'`
> 
> 
> Thanks,
> 
> Stephan Erb
> 
>


Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message