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https://issues.apache.org/jira/browse/HBASE-20188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16443082#comment-16443082
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stack commented on HBASE-20188:
-------------------------------
For [~ram_krish], on fastpath scheduler vs no fastpath scheduler. I did a run
last night and confirmed that stuff runs faster for me when fastpath scheduler
is enabled. I see about ~4% more throughput. 23081 reads/s vs 22252. See
attached hits_with_fp_scheduler.png for image showing two workloadc runs, first
w/ fp on, and then with it off. Also shown are cache hits and misses which seem
about same adjusted for difference in throughtput. Let me try with all from
cache as you had. Will report back here.
> [TESTING] Performance
> ---------------------
>
> Key: HBASE-20188
> URL: https://issues.apache.org/jira/browse/HBASE-20188
> Project: HBase
> Issue Type: Umbrella
> Components: Performance
> Reporter: stack
> Assignee: stack
> Priority: Blocker
> Fix For: 2.0.0
>
> Attachments: CAM-CONFIG-V01.patch, HBASE-20188-xac.sh,
> HBASE-20188.sh, HBase 2.0 performance evaluation - 8GB(1).pdf, HBase 2.0
> performance evaluation - 8GB.pdf, HBase 2.0 performance evaluation - Basic vs
> None_ system settings.pdf, ITBLL2.5B_1.2.7vs2.0.0_cpu.png,
> ITBLL2.5B_1.2.7vs2.0.0_gctime.png, ITBLL2.5B_1.2.7vs2.0.0_iops.png,
> ITBLL2.5B_1.2.7vs2.0.0_load.png, ITBLL2.5B_1.2.7vs2.0.0_memheap.png,
> ITBLL2.5B_1.2.7vs2.0.0_memstore.png, ITBLL2.5B_1.2.7vs2.0.0_ops.png,
> ITBLL2.5B_1.2.7vs2.0.0_ops_NOT_summing_regions.png, YCSB_CPU.png,
> YCSB_GC_TIME.png, YCSB_IN_MEMORY_COMPACTION=NONE.ops.png, YCSB_MEMSTORE.png,
> YCSB_OPs.png, YCSB_in-memory-compaction=NONE.ops.png, YCSB_load.png,
> flamegraph-1072.1.svg, flamegraph-1072.2.svg, hbase-env.sh, hbase-site.xml,
> hbase-site.xml, hits.png, lock.127.workloadc.20180402T200918Z.svg,
> lock.2.memsize2.c.20180403T160257Z.svg, perregion.png, run_ycsb.sh,
> total.png, tree.txt, workloadx, workloadx
>
>
> How does 2.0.0 compare to old versions? Is it faster, slower? There is rumor
> that it is much slower, that the problem is the asyncwal writing. Does
> in-memory compaction slow us down or speed us up? What happens when you
> enable offheaping?
> Keep notes here in this umbrella issue. Need to be able to say something
> about perf when 2.0.0 ships.
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