baseline

loadgen/s3_mixed.lua

@@ -0,0 +1,30 @@
+-- S3 (+S4): 80% GET single / 15% GET list / 5% POST.
+-- The mix exposes the store-actor channel round-trip on urus, mutex
+-- contention on axum, and gen_server message-pass on cowboy without
+-- making writes the bottleneck.
+
+local common = require("common")
+wrk.headers = common.headers
+wrk.headers["Content-Type"] = "application/json"
+
+math.randomseed(os.time() + os.getpid())
+
+-- A small pool of pre-built JSON bodies. Building one fresh per request
+-- in Lua would taint the bench with Lua's GC overhead.
+local body_pool = {}
+for i = 1, 64 do
+  body_pool[i] = string.format(
+    [[{"name":"user%d","email":"u%d@example.test"}]], i, i)
+end
+
+request = function()
+  local r = math.random()
+  if r < 0.80 then
+    return wrk.format("GET", "/api/v1/users/" .. math.random(1, 10000))
+  elseif r < 0.95 then
+    return wrk.format("GET", "/api/v1/users")
+  else
+    local body = body_pool[math.random(1, #body_pool)]
+    return wrk.format("POST", "/api/v1/users", nil, body)
+  end
+end