diff --git a/src/common/crypto/Algorithm.cpp b/src/common/crypto/Algorithm.cpp
index 31035fb1..c253d9c8 100644
--- a/src/common/crypto/Algorithm.cpp
+++ b/src/common/crypto/Algorithm.cpp
@@ -7,6 +7,7 @@
  * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
  * Copyright 2018      Lee Clagett <https://github.com/vtnerd>
  * Copyright 2016-2018 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ * Copyright 2018 MoneroOcean      <https://github.com/MoneroOcean>, <support@moneroocean.stream>
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -223,3 +224,51 @@ const char *xmrig::Algorithm::name(bool shortName) const
 
     return "invalid";
 }
+
+
+// returns string name of the PerfAlgo
+const char *xmrig::Algorithm::perfAlgoName(const xmrig::PerfAlgo pa) {
+    static const char* perf_algo_names[xmrig::PerfAlgo::PA_MAX] = {
+        "cn",
+        "cn-fast",
+        "cn-lite",
+        "cn-heavy",
+    };
+    return perf_algo_names[pa];
+}
+
+// constructs Algorithm from PerfAlgo
+xmrig::Algorithm::Algorithm(const xmrig::PerfAlgo pa) {
+    switch (pa) {
+       case PA_CN:
+           m_algo    = xmrig::CRYPTONIGHT;
+           m_variant = xmrig::VARIANT_1;
+           break;
+       case PA_CN_FAST:
+           m_algo    = xmrig::CRYPTONIGHT;
+           m_variant = xmrig::VARIANT_MSR;
+           break;
+       case PA_CN_LITE:
+           m_algo    = xmrig::CRYPTONIGHT_LITE;
+           m_variant = xmrig::VARIANT_1;
+           break;
+       case PA_CN_HEAVY:
+           m_algo    = xmrig::CRYPTONIGHT_HEAVY;
+           m_variant = xmrig::VARIANT_0;
+           break;
+       default:
+           m_algo    = xmrig::INVALID_ALGO;
+           m_variant = xmrig::VARIANT_AUTO;
+    }
+}
+
+// returns PerfAlgo that corresponds to current Algorithm
+xmrig::PerfAlgo xmrig::Algorithm::perf_algo() const {
+    if (m_variant == VARIANT_MSR) return PA_CN_FAST;
+    switch (m_algo) {
+       case CRYPTONIGHT:       return PA_CN;
+       case CRYPTONIGHT_LITE:  return PA_CN_LITE;
+       case CRYPTONIGHT_HEAVY: return PA_CN_HEAVY;
+       default: return PA_INVALID;
+    }
+}
diff --git a/src/common/crypto/Algorithm.h b/src/common/crypto/Algorithm.h
index bcf029d8..77e2dfff 100644
--- a/src/common/crypto/Algorithm.h
+++ b/src/common/crypto/Algorithm.h
@@ -7,6 +7,7 @@
  * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
  * Copyright 2018      Lee Clagett <https://github.com/vtnerd>
  * Copyright 2016-2018 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ * Copyright 2018 MoneroOcean      <https://github.com/MoneroOcean>, <support@moneroocean.stream>
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -49,6 +50,9 @@ public:
         setAlgo(algo);
     }
 
+    // constructs Algorithm from PerfAlgo
+    Algorithm(const xmrig::PerfAlgo);
+
     inline Algorithm(const char *algo)
     {
         parseAlgorithm(algo);
@@ -56,8 +60,10 @@ public:
 
     bool isEqual(const Algorithm &other) const { return m_algo == other.m_algo && m_variant == other.m_variant; }
     inline Algo algo() const                   { return m_algo; }
+    xmrig::PerfAlgo perf_algo() const; // returns PerfAlgo that corresponds to current Algorithm
     inline const char *name() const            { return name(false); }
     inline const char *shortName() const       { return name(true); }
+    static const char *perfAlgoName(xmrig::PerfAlgo); // returns string name of the PerfAlgo
     inline Variant variant() const             { return m_variant; }
     inline void setVariant(Variant variant)    { m_variant = variant; }
 
diff --git a/src/common/xmrig.h b/src/common/xmrig.h
index 0ff945b9..515c6709 100644
--- a/src/common/xmrig.h
+++ b/src/common/xmrig.h
@@ -6,6 +6,7 @@
  * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
  * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
  * Copyright 2016-2018 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ * Copyright 2018 MoneroOcean      <https://github.com/MoneroOcean>, <support@moneroocean.stream>
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -36,6 +37,15 @@ enum Algo {
     CRYPTONIGHT_HEAVY  /* CryptoNight-Heavy (SUMO) */
 };
 
+// algorithms that can has different performance
+enum PerfAlgo {
+    PA_INVALID = -1,
+    PA_CN,       /* CryptoNight (Monero) */
+    PA_CN_FAST,  /* CryptoNight-Fast (Masari) */
+    PA_CN_LITE,  /* CryptoNight-Lite (AEON) */
+    PA_CN_HEAVY, /* CryptoNight-Heavy (SUMO) */
+    PA_MAX
+};
 
 //--av=1 For CPUs with hardware AES.
 //--av=2 Lower power mode (double hash) of 1.