Performance issue of ZnBivalentWriteStream>>#next:putAll:startingAt: when writing from a large collection

[jbrichau]

The ZnBivalentWriteStream>>#next:putAll:startingAt: collection argument is converted to a ByteArray or a String when needed.

See

zinc/repository/Zinc-HTTP.package/ZnBivalentWriteStream.class/instance/next.putAll.startingAt..st

Line 10 in 01210a4

buffer replaceFrom: 1 to: count with: collection asByteArray startingAt: offset.

However, the entire collection is converted even though only a part of the entire collection is to be written. Since this method is used in the ZnResponse>>writeOn: through ZnUtils>>nextPutAll:on:, which splits the writing of a large collection into chunks of 16kB, the writing of a large response suffers from a severe performance penalty.

See https://lists.gemtalksystems.com/mailman/archives/glass/2024-May/006674.html