use parallelism-factor = 1 for benchmarking
(cherry picked from commit b9b109e9d233d021af1c257d08031a9dd6a56c8c)
benchmark: match Uri directly
(cherry picked from commit 61cd0f9aabf173fe95015d0661adffb0eb828790)
try to render header bytes directly if possible
(cherry picked from commit 72475ae67313ab642e5cde38b7f23e3ab0b85d60)