[jira] [Commented] (TS-4323) Should the H2 DATA frame default to 16KB?

["Bryan Call (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TS-4323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15226426#comment-15226426 ] 

Bryan Call commented on TS-4323:
--------------------------------

There would be an issue if browsers require an entire frame to be transferred before they start to use that data in the frame.  My guess is they should be able to read data from a partially transferred frame.

It isn't that much of an optimization since we are talking about .1% overhead vs .05% overhead for the 9 byte http/2 header.

> Should the H2 DATA frame default to 16KB?
> -----------------------------------------
>
>                 Key: TS-4323
>                 URL: https://issues.apache.org/jira/browse/TS-4323
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: HTTP/2
>            Reporter: Leif Hedstrom
>              Labels: A
>             Fix For: 6.2.0
>
>
> While testing / debugging TS-4321, I noticed that it is using DATA frames of size 8K only, even though the default configuration says:
> proxy.config.http2.max_frame_size: 16k
> Is that really as intended? Do we not use / honor / support proxy.config.http2.max_frame_size ? If so, we should at least change the default of proxy.config.http2.max_frame_size, or, if it's not honored, remove it? 
> But ideally, we ought to use the frame size as set by proxy.config.http2.max_frame_size, no?



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