http2: adjust stream buffer size #16445
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apapirovski
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addaleax
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| @@ -818,7 +818,7 @@ int Http2Session::DoWrite(WriteWrap* req_wrap, | |||
| return 0; | |||
| } | |||
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| void Http2Session::AllocateSend(size_t recommended, uv_buf_t* buf) { | |||
| void Http2Session::AllocateSend(uv_buf_t* buf) { | |||
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I'm good with removing this. Just fwiw, I included this to follow a pattern used elsewhere (tho slightly differently)
e.g. https://github.com/nodejs/node/blob/master/src/tls_wrap.cc#L675
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cjihrig
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket.
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket. PR-URL: #16445 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket. PR-URL: #16445 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket. PR-URL: #16445 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket. PR-URL: #16445 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket. PR-URL: nodejs/node#16445 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket. PR-URL: nodejs/node#16445 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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Adjust stream buffer size to allow full 4 default-sized frames including their frame headers to allow more efficient sending of data to the socket. PR-URL: nodejs/node#16445 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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So I have no idea if there was reasoning for this originally — and if there was feel free to let me know and I'll close — but the current
kAllocBufferSizeis just a tad too small for fully efficient writes given default window size & frame size.64 * 1024will be 35 bytes smaller than the full default window size due to the 4 frame headers that are included.Obviously this all goes out the window with different frame sizes & window sizes but seems to make sense to at least sort of optimize for the default here.
Here's a log that shows what was happening before the change (note the last few lines)
This also removes the seemingly unused
size_t recommendedinAllocateSendand the constant it usesSEND_BUFFER_RECOMMENDED_SIZE. Again, let me know if this is here for some future functionality that hasn't been added yet.Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passesAffected core subsystem(s)
http2