reduce number of outstanding execute calls with minimal performance p…

…enalty of 4%
gnachman · Mar 10, 2014 · 192564e · 192564e
1 parent 964a88d
commit 192564e
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/PTYSession.m b/PTYSession.m
@@ -225,7 +225,7 @@ - (id)init {
 
         // Experimentally, this is enough to keep the queue primed but not overwhelmed.
         // TODO: How do slower machines fare?
-        static const int kMaxOutstandingExecuteCalls = 8;
+        static const int kMaxOutstandingExecuteCalls = 4;
         _executionSemaphore = dispatch_semaphore_create(kMaxOutstandingExecuteCalls);
 
         _lastOutput = _lastInput;

diff --git a/tests/spam.cc b/tests/spam.cc
@@ -24,13 +24,13 @@ void setline(char* s, int n) {
 int main(int argc, char*argv[]) {
   int n;
   if (argc == 1) {
-    n = 1000000;
+    n = 20000;
   } else {
     n = atoi(argv[1]);
   }
   cm = argc==3;
   for (int i = 0; n < 0 || i < n; ++i) {
-    char buffer[100];
+    char buffer[10000];
     setline(buffer, sizeof(buffer)-1);
     printf("%s\n", buffer);
   }