From 2e6acd2fa179b87250affa709cddbcc0b90a824a Mon Sep 17 00:00:00 2001
From: Eugene Pankov <john.pankov@gmail.com>
Date: Sat, 10 Nov 2018 21:10:47 +0100
Subject: [PATCH] perf: reduced pty bufferization window

---
 terminus-terminal/src/bufferizedPTY.js | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/terminus-terminal/src/bufferizedPTY.js b/terminus-terminal/src/bufferizedPTY.js
index e61f1471..837086fb 100644
--- a/terminus-terminal/src/bufferizedPTY.js
+++ b/terminus-terminal/src/bufferizedPTY.js
@@ -11,8 +11,11 @@ module.exports = function patchPTYModule (mod) {
     let lastFlush = 0
     let nextTimeout = 0
 
-    const maxWindow = 250
-    const minWindow = 50
+    // Minimum prebuffering window (ms) if the input is non-stop flowing
+    const minWindow = 10
+
+    // Maximum buffering time (ms) until output must be flushed unconditionally
+    const maxWindow = 100
 
     function flush () {
         if (buffer) {
@@ -36,9 +39,11 @@ module.exports = function patchPTYModule (mod) {
     terminal.on('data', data => {
         buffer += data
         if (Date.now() - lastFlush > maxWindow) {
+            // Taking too much time buffering, flush to keep things interactive
             flush()
         } else {
-            if (Date.now() > nextTimeout - (minWindow / 10)) {
+            if (Date.now() > nextTimeout - (maxWindow / 10)) {
+                // Extend the window if it's expiring
                 reschedule()
             }
         }