Susmit Sarkar created SSHD-1169:
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Summary: Sftp Server throughput is lagging for concurrent threads
Key: SSHD-1169
URL: https://issues.apache.org/jira/browse/SSHD-1169
Project: MINA SSHD
Issue Type: Question
Affects Versions: 2.5.1
Reporter: Susmit Sarkar
Attachments: image-2021-05-18-20-10-43-416.png
Hello Dear Team,
We are seeing a considerably low throughput for large-sized file (100Mb sized
file during concurrent execution)
We did some load testing and the throughputs sometimes increase (when we do a
VM reboot for 1st run) and sometimes its pretty low compare to commercial
servers
*2000 cycle runs | 20 concurrent threads | 100mb files == Throughput is 0.94
documents per seconds*
For a commercial server (like Maverick), it's around 1.17 documents per second.
Now if we do a server reboot and re-execute the test then the throughput
increases by leaps and bounds
*2000 cycle runs | 20 concurrent threads | 100 mb files == Throughput is 1.90
documents per seconds (More than 100 percent)*
I am using IO Factory as NIO2, and below are the combinations for different
NIO worker threads
!image-2021-05-18-20-10-43-416.png!
We are pretty confused and need help. For small files, Apache performed very
well the throughput was 30 percent better than Maverick, but for large files,
we are seeing these issues sometimes (mostly with reboot it performs good, but
after that run its starts lagging)
Will exposing any tuning parameter help?
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