Max Lv db861130d7 Lease relay buffers from a shared pool (#3081) ...

A connection's two 16 KiB relay buffers lived inline in its slot, so every
connection that had moved a byte kept those pages resident even while idle.
They now come from one ObjectPool with two buffers per connection slot: a
connection leases a buffer while bytes wait in it and returns it when it
drains, and the LIFO free list hands the same warm pages to the next busy
connection. The pool covers every direction of every slot, so a lease never
fails and reads never wait on it.

With 1,000 idle connections, ss-server drops from 35.4 to 27.2 KiB per
connection on Linux (C: 26.2) and from 73.9 to 42.2 KiB on macOS. The slot
shrinks from 104 to 68 KiB.

FixedBuffer gains a user-provided constructor so that value-initialising one
(a pool lease, a variant alternative) no longer zero-fills its storage.

2026-10-15 10:19:05 +08:00

..

measurements

C++20 port 14/14: remove the C shims, report, fixes (#3077)

2026-10-15 10:11:56 +08:00

cpp-core.md

Lease relay buffers from a shared pool (#3081)

2026-10-15 10:19:05 +08:00

encoding-experiments.md

Add opt-in printable TCP salt experiment for ss-local (#3063)

2026-10-13 09:09:51 +08:00

modernization.md

C++20 port 15/15: remove the stream ciphers (#3079)

2026-10-15 10:15:53 +08:00

performance.md

Lease relay buffers from a shared pool (#3081)

2026-10-15 10:19:05 +08:00

printable-salt.md

Add opt-in printable TCP salt experiment for ss-local (#3063)

2026-10-13 09:09:51 +08:00