Decrease a relay buffer size for MIPS devices

mtglib/internal/relay/pool_settings_mips.go

@@ -0,0 +1,13 @@
+//go:build mips || mipsle
+
+package relay
+
+import "github.com/9seconds/mtg/v2/mtglib/internal/tls"
+
+const (
+	// MIPS is quite short in resources, and usually it means that it will run
+	// on Microtiks, OpenWRT-based routers or similar hardware. I think it worth
+	// to sacrifice a number of read syscalls (read, CPU load) to shrink
+	// limited RAM resources.
+	bufPoolSize = tls.MaxRecordPayloadSize / 2
+)