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https://issues.apache.org/jira/browse/HDDS-9668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duong updated HDDS-9668:
------------------------
Description:
Today EC with GRPC copies input data buffer several times:
* when parsing protobuf objects from the input network stream, data is copied
from the original netty direct buffer to heap.
* when writing data to files, the heap buffer !ec-ncopies.png! needs to be
copied to direct buffers by NIO.
The costs of buffer copies themself is inefficient, and the GC consequences of
cleaning up the intermediate buffers slow the EC I/O down.
was:
Today EC with GRPC copies input data buffer several times:
- when
> Zero-Copy in EC GRPC
> --------------------
>
> Key: HDDS-9668
> URL: https://issues.apache.org/jira/browse/HDDS-9668
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Duong
> Priority: Major
> Attachments: ec-ncopies.png
>
>
> Today EC with GRPC copies input data buffer several times:
> * when parsing protobuf objects from the input network stream, data is copied
> from the original netty direct buffer to heap.
> * when writing data to files, the heap buffer !ec-ncopies.png! needs to be
> copied to direct buffers by NIO.
> The costs of buffer copies themself is inefficient, and the GC consequences
> of cleaning up the intermediate buffers slow the EC I/O down.
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