From 73a623560915deb504f023a8b01499a27d5849e5 Mon Sep 17 00:00:00 2001
From: swordlet <swordlet@qq.com>
Date: Sun, 14 Feb 2021 09:56:27 +0800
Subject: [PATCH 1/2] update fork height in RandomX.md

---
 RandomX.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/RandomX.md b/RandomX.md
index 71f818b4..680baeb4 100644
--- a/RandomX.md
+++ b/RandomX.md
@@ -121,7 +121,7 @@ in rx_hash.h
 #define SEEDHASH_EPOCH_TESTNET_LAG    32
 
 // fork seed height, (time frame of RANDOMX_FORK_HEIGHT) + SEEDHASH_EPOCH_LAG = fork time frame
-#define RANDOMX_FORK_HEIGHT           1339392 
+#define RANDOMX_FORK_HEIGHT           1540096 
 
 // (time frame of RANDOMX_TESTNET_FORK_HEIGHT) + SEEDHASH_EPOCH_TESTNET_LAG = test net fork time frame
 #define RANDOMX_TESTNET_FORK_HEIGHT   196288 // 196288 % 64 = 0

From d22f3414f5b076035e9423ff26c0cb16a0aaa748 Mon Sep 17 00:00:00 2001
From: swordlet <swordlet@qq.com>
Date: Mon, 15 Feb 2021 17:48:51 +0800
Subject: [PATCH 2/2] check huge pages availability for linux pool

---
 client/rx_hash.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/client/rx_hash.c b/client/rx_hash.c
index ddc34945..9504e76a 100644
--- a/client/rx_hash.c
+++ b/client/rx_hash.c
@@ -43,6 +43,7 @@ static uint32_t g_mine_n_threads;
 static pthread_mutex_t g_rx_dataset_mutex = PTHREAD_MUTEX_INITIALIZER;
 
 int rx_update_vm(randomx_vm **vm, randomx_cache *cache, randomx_dataset *dataset);
+int getHugePageNumber(unsigned long* num); // get and check if huge pages is available
 
 static void rx_abort(const char *msg){
     fprintf(stderr, "%s\n", msg);
@@ -171,6 +172,16 @@ void rx_init_flags(int is_full_mem, uint32_t init_thread_count) {
 
     if (g_randomx_flags & RANDOMX_FLAG_LARGE_PAGES) {
         xdag_info(" - randomx large pages mode");
+#ifdef __linux__
+        unsigned long num = 0;
+        int ret;
+        ret = getHugePageNumber(&num);
+        if (ret == -1 || num < 2560) {
+            rx_abort("randomx: huge page not available.");
+            return;
+        }
+        xdag_info( "huge page free = %lu ", num );
+#endif
     } else {
         xdag_info(" - randomx small pages mode");
     }
@@ -584,3 +595,20 @@ void rx_loading_fork_time(void) {    // node start height greater than g_rx_fork
         }
     }
 }
+
+// get huge pages free number
+int getHugePageNumber(unsigned long* num) {
+    void *fp;
+    char str[256];
+    if ((fp = fopen("/proc/meminfo", "r")) == NULL) {
+        return -1;
+    }
+    while (fscanf(fp, "%s", str) != EOF) {
+        if (strcmp(str, "HugePages_Free:")==0) {
+            fscanf(fp, "%lu", num);
+            break;
+        }
+    }
+    fclose(fp);
+    return 0;
+}