From d9b88ea7d25f91ca43020e327a9e4bd2eb0d6b06 Mon Sep 17 00:00:00 2001
From: Dhanya Thattil <dhanya.thattil@psi.ch>
Date: Mon, 27 Jan 2020 20:10:49 +0100
Subject: [PATCH] performance optimization in fifodepth, ensure memory is
 allocated by writing something in the beginning

---
 slsReceiverSoftware/src/Fifo.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/slsReceiverSoftware/src/Fifo.cpp b/slsReceiverSoftware/src/Fifo.cpp
index bb37de5f5..0ad833966 100755
--- a/slsReceiverSoftware/src/Fifo.cpp
+++ b/slsReceiverSoftware/src/Fifo.cpp
@@ -51,6 +51,10 @@ void Fifo::CreateFifos(uint32_t fifoItemSize) {
 		throw sls::RuntimeError("Could not allocate memory for fifos");
 	}
     memset(memory, 0, mem_len);
+	int pagesize = getpagesize();
+	for (size_t i = 0; i < mem_len; i += pagesize) {
+		strcpy(memory + i, "memory");
+	}	
 	FILE_LOG(logDEBUG) << "Memory Allocated " << index << ": " << (double)mem_len/(1000.00 * 1000.00) << " Mb";
 
 	{ //push free addresses into fifoFree fifo