diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8749a003f..543836c86 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,7 +44,6 @@ set(HEADERS
     src/Summary.h
     src/version.h
     src/workers/CpuThreadLegacy.h
-    src/workers/Hashrate.h
     src/workers/WorkersLegacy.h
    )
 
@@ -92,7 +91,6 @@ set(SOURCES
     src/net/strategies/DonateStrategy.cpp
     src/Summary.cpp
     src/workers/CpuThreadLegacy.cpp
-    src/workers/Hashrate.cpp
     src/workers/WorkersLegacy.cpp
     src/xmrig.cpp
    )
diff --git a/src/api/v1/ApiRouter.cpp b/src/api/v1/ApiRouter.cpp
index 9e609d133..48a92c938 100644
--- a/src/api/v1/ApiRouter.cpp
+++ b/src/api/v1/ApiRouter.cpp
@@ -36,7 +36,7 @@
 #include "core/config/Config.h"
 #include "rapidjson/document.h"
 #include "version.h"
-#include "workers/Hashrate.h"
+//#include "workers/Hashrate.h"
 #include "workers/WorkersLegacy.h"
 
 
@@ -69,7 +69,7 @@ void xmrig::ApiRouter::onRequest(IApiRequest &request)
         if (request.url() == "/1/summary" || request.url() == "/api.json") {
             request.accept();
             getMiner(request.reply(), request.doc());
-            getHashrate(request.reply(), request.doc());
+//            getHashrate(request.reply(), request.doc());
         }
         else if (request.url() == "/1/threads") {
             request.accept();
@@ -98,35 +98,35 @@ void xmrig::ApiRouter::onRequest(IApiRequest &request)
 }
 
 
-void xmrig::ApiRouter::getHashrate(rapidjson::Value &reply, rapidjson::Document &doc) const
-{
-    using namespace rapidjson;
-    auto &allocator = doc.GetAllocator();
+//void xmrig::ApiRouter::getHashrate(rapidjson::Value &reply, rapidjson::Document &doc) const
+//{
+//    using namespace rapidjson;
+//    auto &allocator = doc.GetAllocator();
 
-    Value hashrate(kObjectType);
-    Value total(kArrayType);
-    Value threads(kArrayType);
+//    Value hashrate(kObjectType);
+//    Value total(kArrayType);
+//    Value threads(kArrayType);
 
-    const Hashrate *hr = WorkersLegacy::hashrate();
+//    const Hashrate *hr = WorkersLegacy::hashrate();
 
-    total.PushBack(normalize(hr->calc(Hashrate::ShortInterval)),  allocator);
-    total.PushBack(normalize(hr->calc(Hashrate::MediumInterval)), allocator);
-    total.PushBack(normalize(hr->calc(Hashrate::LargeInterval)),  allocator);
+//    total.PushBack(normalize(hr->calc(Hashrate::ShortInterval)),  allocator);
+//    total.PushBack(normalize(hr->calc(Hashrate::MediumInterval)), allocator);
+//    total.PushBack(normalize(hr->calc(Hashrate::LargeInterval)),  allocator);
 
-    for (size_t i = 0; i < WorkersLegacy::threads(); i++) {
-        Value thread(kArrayType);
-        thread.PushBack(normalize(hr->calc(i, Hashrate::ShortInterval)),  allocator);
-        thread.PushBack(normalize(hr->calc(i, Hashrate::MediumInterval)), allocator);
-        thread.PushBack(normalize(hr->calc(i, Hashrate::LargeInterval)),  allocator);
+//    for (size_t i = 0; i < WorkersLegacy::threads(); i++) {
+//        Value thread(kArrayType);
+//        thread.PushBack(normalize(hr->calc(i, Hashrate::ShortInterval)),  allocator);
+//        thread.PushBack(normalize(hr->calc(i, Hashrate::MediumInterval)), allocator);
+//        thread.PushBack(normalize(hr->calc(i, Hashrate::LargeInterval)),  allocator);
 
-        threads.PushBack(thread, allocator);
-    }
+//        threads.PushBack(thread, allocator);
+//    }
 
-    hashrate.AddMember("total",   total, allocator);
-    hashrate.AddMember("highest", normalize(hr->highest()), allocator);
-    hashrate.AddMember("threads", threads, allocator);
-    reply.AddMember("hashrate", hashrate, allocator);
-}
+//    hashrate.AddMember("total",   total, allocator);
+//    hashrate.AddMember("highest", normalize(hr->highest()), allocator);
+//    hashrate.AddMember("threads", threads, allocator);
+//    reply.AddMember("hashrate", hashrate, allocator);
+//}
 
 
 void xmrig::ApiRouter::getMiner(rapidjson::Value &reply, rapidjson::Document &doc) const
@@ -151,29 +151,29 @@ void xmrig::ApiRouter::getMiner(rapidjson::Value &reply, rapidjson::Document &do
 
 void xmrig::ApiRouter::getThreads(rapidjson::Value &reply, rapidjson::Document &doc) const
 {
-    using namespace rapidjson;
-    auto &allocator = doc.GetAllocator();
-    const Hashrate *hr = WorkersLegacy::hashrate();
+//    using namespace rapidjson;
+//    auto &allocator = doc.GetAllocator();
+//    const Hashrate *hr = WorkersLegacy::hashrate();
 
-    WorkersLegacy::threadsSummary(doc);
+//    WorkersLegacy::threadsSummary(doc);
 
-    const std::vector<IThread *> &threads = m_base->config()->threads();
-    Value list(kArrayType);
+//    const std::vector<IThread *> &threads = m_base->config()->threads();
+//    Value list(kArrayType);
 
-    size_t i = 0;
-    for (const xmrig::IThread *thread : threads) {
-        Value value = thread->toAPI(doc);
+//    size_t i = 0;
+//    for (const xmrig::IThread *thread : threads) {
+//        Value value = thread->toAPI(doc);
 
-        Value hashrate(kArrayType);
-        hashrate.PushBack(normalize(hr->calc(i, Hashrate::ShortInterval)),  allocator);
-        hashrate.PushBack(normalize(hr->calc(i, Hashrate::MediumInterval)), allocator);
-        hashrate.PushBack(normalize(hr->calc(i, Hashrate::LargeInterval)),  allocator);
+//        Value hashrate(kArrayType);
+//        hashrate.PushBack(normalize(hr->calc(i, Hashrate::ShortInterval)),  allocator);
+//        hashrate.PushBack(normalize(hr->calc(i, Hashrate::MediumInterval)), allocator);
+//        hashrate.PushBack(normalize(hr->calc(i, Hashrate::LargeInterval)),  allocator);
 
-        i++;
+//        i++;
 
-        value.AddMember("hashrate", hashrate, allocator);
-        list.PushBack(value, allocator);
-    }
+//        value.AddMember("hashrate", hashrate, allocator);
+//        list.PushBack(value, allocator);
+//    }
 
-    reply.AddMember("threads", list, allocator);
+//    reply.AddMember("threads", list, allocator);
 }
diff --git a/src/api/v1/ApiRouter.h b/src/api/v1/ApiRouter.h
index bdbbaea48..e2b9bd256 100644
--- a/src/api/v1/ApiRouter.h
+++ b/src/api/v1/ApiRouter.h
@@ -49,7 +49,7 @@ protected:
     void onRequest(IApiRequest &request) override;
 
 private:
-    void getHashrate(rapidjson::Value &reply, rapidjson::Document &doc) const;
+//    void getHashrate(rapidjson::Value &reply, rapidjson::Document &doc) const;
     void getMiner(rapidjson::Value &reply, rapidjson::Document &doc) const;
     void getThreads(rapidjson::Value &reply, rapidjson::Document &doc) const;
 
diff --git a/src/workers/Hashrate.cpp b/src/backend/common/Hashrate.cpp
similarity index 71%
rename from src/workers/Hashrate.cpp
rename to src/backend/common/Hashrate.cpp
index 0a683caaa..6ffd45b77 100644
--- a/src/workers/Hashrate.cpp
+++ b/src/backend/common/Hashrate.cpp
@@ -29,12 +29,9 @@
 #include <stdio.h>
 
 
-#include "base/io/log/Log.h"
 #include "base/tools/Chrono.h"
 #include "base/tools/Handle.h"
-#include "core/config/Config.h"
-#include "core/Controller.h"
-#include "workers/Hashrate.h"
+#include "backend/common/Hashrate.h"
 
 
 inline static const char *format(double h, char *buf, size_t size)
@@ -48,10 +45,9 @@ inline static const char *format(double h, char *buf, size_t size)
 }
 
 
-Hashrate::Hashrate(size_t threads, xmrig::Controller *controller) :
+xmrig::Hashrate::Hashrate(size_t threads) :
     m_highest(0.0),
-    m_threads(threads),
-    m_timer(nullptr)
+    m_threads(threads)
 {
     m_counts     = new uint64_t*[threads];
     m_timestamps = new uint64_t*[threads];
@@ -62,20 +58,23 @@ Hashrate::Hashrate(size_t threads, xmrig::Controller *controller) :
         m_timestamps[i] = new uint64_t[kBucketSize]();
         m_top[i]        = 0;
     }
-
-    const int printTime = controller->config()->printTime();
-
-    if (printTime > 0) {
-        m_timer = new uv_timer_t;
-        uv_timer_init(uv_default_loop(), m_timer);
-        m_timer->data = this;
-
-        uv_timer_start(m_timer, Hashrate::onReport, (printTime + 4) * 1000, printTime * 1000);
-    }
 }
 
 
-double Hashrate::calc(size_t ms) const
+xmrig::Hashrate::~Hashrate()
+{
+    for (size_t i = 0; i < m_threads; i++) {
+        delete [] m_counts[i];
+        delete [] m_timestamps[i];
+    }
+
+    delete [] m_counts;
+    delete [] m_timestamps;
+    delete [] m_top;
+}
+
+
+double xmrig::Hashrate::calc(size_t ms) const
 {
     double result = 0.0;
     double data;
@@ -91,7 +90,7 @@ double Hashrate::calc(size_t ms) const
 }
 
 
-double Hashrate::calc(size_t threadId, size_t ms) const
+double xmrig::Hashrate::calc(size_t threadId, size_t ms) const
 {
     assert(threadId < m_threads);
     if (threadId >= m_threads) {
@@ -140,7 +139,7 @@ double Hashrate::calc(size_t threadId, size_t ms) const
 }
 
 
-void Hashrate::add(size_t threadId, uint64_t count, uint64_t timestamp)
+void xmrig::Hashrate::add(size_t threadId, uint64_t count, uint64_t timestamp)
 {
     const size_t top = m_top[threadId];
     m_counts[threadId][top]     = count;
@@ -150,30 +149,7 @@ void Hashrate::add(size_t threadId, uint64_t count, uint64_t timestamp)
 }
 
 
-void Hashrate::print() const
-{
-    char num1[8] = { 0 };
-    char num2[8] = { 0 };
-    char num3[8] = { 0 };
-    char num4[8] = { 0 };
-
-    LOG_INFO(WHITE_BOLD("speed") " 10s/60s/15m " CYAN_BOLD("%s") CYAN(" %s %s ") CYAN_BOLD("H/s") " max " CYAN_BOLD("%s H/s"),
-             format(calc(ShortInterval),  num1, sizeof(num1)),
-             format(calc(MediumInterval), num2, sizeof(num2)),
-             format(calc(LargeInterval),  num3, sizeof(num3)),
-             format(m_highest,            num4, sizeof(num4))
-             );
-}
-
-
-void Hashrate::stop()
-{
-    xmrig::Handle::close(m_timer);
-    m_timer = nullptr;
-}
-
-
-void Hashrate::updateHighest()
+void xmrig::Hashrate::updateHighest()
 {
    double highest = calc(ShortInterval);
    if (isnormal(highest) && highest > m_highest) {
@@ -182,13 +158,7 @@ void Hashrate::updateHighest()
 }
 
 
-const char *Hashrate::format(double h, char *buf, size_t size)
+const char *xmrig::Hashrate::format(double h, char *buf, size_t size)
 {
     return ::format(h, buf, size);
 }
-
-
-void Hashrate::onReport(uv_timer_t *handle)
-{
-    static_cast<Hashrate*>(handle->data)->print();
-}
diff --git a/src/workers/Hashrate.h b/src/backend/common/Hashrate.h
similarity index 90%
rename from src/workers/Hashrate.h
rename to src/backend/common/Hashrate.h
index d27b289e0..1787bf6ab 100644
--- a/src/workers/Hashrate.h
+++ b/src/backend/common/Hashrate.h
@@ -27,12 +27,9 @@
 
 
 #include <stdint.h>
-#include <uv.h>
 
 
 namespace xmrig {
-    class Controller;
-}
 
 
 class Hashrate
@@ -44,12 +41,11 @@ public:
         LargeInterval  = 900000
     };
 
-    Hashrate(size_t threads, xmrig::Controller *controller);
+    Hashrate(size_t threads);
+    ~Hashrate();
     double calc(size_t ms) const;
     double calc(size_t threadId, size_t ms) const;
     void add(size_t threadId, uint64_t count, uint64_t timestamp);
-    void print() const;
-    void stop();
     void updateHighest();
 
     inline double highest() const { return m_highest; }
@@ -58,8 +54,6 @@ public:
     static const char *format(double h, char *buf, size_t size);
 
 private:
-    static void onReport(uv_timer_t *handle);
-
     constexpr static size_t kBucketSize = 2 << 11;
     constexpr static size_t kBucketMask = kBucketSize - 1;
 
@@ -68,8 +62,10 @@ private:
     uint32_t* m_top;
     uint64_t** m_counts;
     uint64_t** m_timestamps;
-    uv_timer_t *m_timer;
 };
 
 
+} // namespace xmrig
+
+
 #endif /* XMRIG_HASHRATE_H */
diff --git a/src/backend/common/Workers.cpp b/src/backend/common/Workers.cpp
index 987ca526a..c4ac38a5d 100644
--- a/src/backend/common/Workers.cpp
+++ b/src/backend/common/Workers.cpp
@@ -24,6 +24,7 @@
  */
 
 
+#include "backend/common/Hashrate.h"
 #include "backend/common/Workers.h"
 #include "backend/cpu/CpuWorker.h"
 #include "base/io/log/Log.h"
@@ -37,13 +38,16 @@ class WorkersPrivate
 public:
     inline WorkersPrivate()
     {
-
     }
 
 
     inline ~WorkersPrivate()
     {
+        delete hashrate;
     }
+
+
+    Hashrate *hashrate = nullptr;
 };
 
 
@@ -65,6 +69,13 @@ xmrig::Workers<T>::~Workers()
 }
 
 
+template<class T>
+const xmrig::Hashrate *xmrig::Workers<T>::hashrate() const
+{
+    return d_ptr->hashrate;
+}
+
+
 template<class T>
 void xmrig::Workers<T>::add(const T &data)
 {
@@ -75,6 +86,8 @@ void xmrig::Workers<T>::add(const T &data)
 template<class T>
 void xmrig::Workers<T>::start()
 {
+    d_ptr->hashrate = new Hashrate(m_workers.size());
+
     for (Thread<T> *worker : m_workers) {
         worker->start(Workers<T>::onReady);
     }
@@ -92,13 +105,34 @@ void xmrig::Workers<T>::stop()
 
     m_workers.clear();
     Nonce::touch(T::backend());
+
+    delete d_ptr->hashrate;
+    d_ptr->hashrate = nullptr;
 }
 
 
 template<class T>
-void xmrig::Workers<T>::onReady(void *arg)
+void xmrig::Workers<T>::tick(uint64_t)
+{
+    if (!d_ptr->hashrate) {
+        return;
+    }
+
+    for (Thread<T> *handle : m_workers) {
+        if (!handle->worker()) {
+            return;
+        }
+
+        d_ptr->hashrate->add(handle->index(), handle->worker()->hashCount(), handle->worker()->timestamp());
+    }
+
+    d_ptr->hashrate->updateHighest();
+}
+
+
+template<class T>
+void xmrig::Workers<T>::onReady(void *)
 {
-    printf("ON READY\n");
 }
 
 
diff --git a/src/backend/common/Workers.h b/src/backend/common/Workers.h
index 25f81c5b1..3ef4b015d 100644
--- a/src/backend/common/Workers.h
+++ b/src/backend/common/Workers.h
@@ -34,6 +34,7 @@
 namespace xmrig {
 
 
+class Hashrate;
 class WorkersPrivate;
 
 
@@ -44,9 +45,11 @@ public:
     Workers();
     ~Workers();
 
+    const Hashrate *hashrate() const;
     void add(const T &data);
     void start();
     void stop();
+    void tick(uint64_t ticks);
 
 private:
     static void onReady(void *arg);
diff --git a/src/backend/common/common.cmake b/src/backend/common/common.cmake
index bb84af58e..c470ea507 100644
--- a/src/backend/common/common.cmake
+++ b/src/backend/common/common.cmake
@@ -2,6 +2,7 @@ set(HEADERS_BACKEND_COMMON
     src/backend/common/interfaces/IBackend.h
     src/backend/common/interfaces/IThread.h
     src/backend/common/interfaces/IWorker.h
+    src/backend/common/Hashrate.h
     src/backend/common/Thread.h
     src/backend/common/Threads.h
     src/backend/common/Worker.h
@@ -10,6 +11,7 @@ set(HEADERS_BACKEND_COMMON
    )
 
 set(SOURCES_BACKEND_COMMON
+    src/backend/common/Hashrate.cpp
     src/backend/common/Threads.cpp
     src/backend/common/Worker.cpp
     src/backend/common/Workers.cpp
diff --git a/src/backend/common/interfaces/IBackend.h b/src/backend/common/interfaces/IBackend.h
index d6fe16955..69ed4c8c4 100644
--- a/src/backend/common/interfaces/IBackend.h
+++ b/src/backend/common/interfaces/IBackend.h
@@ -32,6 +32,7 @@
 namespace xmrig {
 
 
+class Hashrate;
 class Job;
 class String;
 
@@ -41,6 +42,7 @@ class IBackend
 public:
     virtual ~IBackend() = default;
 
+    virtual const Hashrate *hashrate() const    = 0;
     virtual const String &profileName() const   = 0;
     virtual void printHashrate(bool details)    = 0;
     virtual void setJob(const Job &job)         = 0;
diff --git a/src/backend/cpu/CpuBackend.cpp b/src/backend/cpu/CpuBackend.cpp
index a1ae57479..c8d38ca65 100644
--- a/src/backend/cpu/CpuBackend.cpp
+++ b/src/backend/cpu/CpuBackend.cpp
@@ -23,17 +23,16 @@
  */
 
 
+#include "backend/common/Hashrate.h"
 #include "backend/common/Workers.h"
 #include "backend/cpu/CpuBackend.h"
+#include "base/io/log/Log.h"
 #include "base/net/stratum/Job.h"
 #include "base/tools/String.h"
 #include "core/config/Config.h"
 #include "core/Controller.h"
 
 
-#include "base/io/log/Log.h"
-
-
 namespace xmrig {
 
 
@@ -98,6 +97,12 @@ xmrig::CpuBackend::~CpuBackend()
 }
 
 
+const xmrig::Hashrate *xmrig::CpuBackend::hashrate() const
+{
+    return d_ptr->workers.hashrate();
+}
+
+
 const xmrig::String &xmrig::CpuBackend::profileName() const
 {
     return d_ptr->profileName;
@@ -106,7 +111,26 @@ const xmrig::String &xmrig::CpuBackend::profileName() const
 
 void xmrig::CpuBackend::printHashrate(bool details)
 {
+    if (!details || !hashrate()) {
+        return;
+    }
 
+    char num[8 * 3] = { 0 };
+
+    Log::print(WHITE_BOLD_S "|    CPU THREAD | AFFINITY | 10s H/s | 60s H/s | 15m H/s |");
+
+    size_t i = 0;
+    for (const CpuThread &thread : d_ptr->threads) {
+         Log::print("| %13zu | %8" PRId64 " | %7s | %7s | %7s |",
+                    i,
+                    thread.affinity(),
+                    Hashrate::format(hashrate()->calc(i, Hashrate::ShortInterval),  num,         sizeof num / 3),
+                    Hashrate::format(hashrate()->calc(i, Hashrate::MediumInterval), num + 8,     sizeof num / 3),
+                    Hashrate::format(hashrate()->calc(i, Hashrate::LargeInterval),  num + 8 * 2, sizeof num / 3)
+                    );
+
+         i++;
+    }
 }
 
 
@@ -147,5 +171,5 @@ void xmrig::CpuBackend::stop()
 
 void xmrig::CpuBackend::tick(uint64_t ticks)
 {
-
+    d_ptr->workers.tick(ticks);
 }
diff --git a/src/backend/cpu/CpuBackend.h b/src/backend/cpu/CpuBackend.h
index d39ab38d6..a7b742eb4 100644
--- a/src/backend/cpu/CpuBackend.h
+++ b/src/backend/cpu/CpuBackend.h
@@ -44,6 +44,7 @@ public:
     ~CpuBackend() override;
 
 protected:
+    const Hashrate *hashrate() const override;
     const String &profileName() const override;
     void printHashrate(bool details) override;
     void setJob(const Job &job) override;
diff --git a/src/core/Miner.cpp b/src/core/Miner.cpp
index 1f8196940..83ce22065 100644
--- a/src/core/Miner.cpp
+++ b/src/core/Miner.cpp
@@ -26,6 +26,7 @@
 #include <uv.h>
 
 
+#include "backend/common/Hashrate.h"
 #include "backend/cpu/CpuBackend.h"
 #include "base/io/log/Log.h"
 #include "base/net/stratum/Job.h"
@@ -35,8 +36,6 @@
 #include "core/Miner.h"
 #include "crypto/common/Nonce.h"
 
-#include "base/tools/Chrono.h"
-
 
 namespace xmrig {
 
@@ -83,6 +82,7 @@ public:
     bool active         = false;
     bool enabled        = true;
     Controller *controller;
+    double maxHashrate  = 0.0;
     Job job;
     std::vector<IBackend *> backends;
     Timer *timer        = nullptr;
@@ -116,6 +116,12 @@ bool xmrig::Miner::isEnabled() const
 }
 
 
+const std::vector<xmrig::IBackend *> &xmrig::Miner::backends() const
+{
+    return d_ptr->backends;
+}
+
+
 xmrig::Job xmrig::Miner::job() const
 {
     uv_rwlock_rdlock(&d_ptr->rwlock);
@@ -137,9 +143,26 @@ void xmrig::Miner::pause()
 
 void xmrig::Miner::printHashrate(bool details)
 {
+    char num[8 * 4] = { 0 };
+    double speed[3] = { 0.0 };
+
     for (IBackend *backend : d_ptr->backends) {
+        const Hashrate *hashrate = backend->hashrate();
+        if (hashrate) {
+            speed[0] += hashrate->calc(Hashrate::ShortInterval);
+            speed[1] += hashrate->calc(Hashrate::MediumInterval);
+            speed[2] += hashrate->calc(Hashrate::LargeInterval);
+        }
+
         backend->printHashrate(details);
     }
+
+    LOG_INFO(WHITE_BOLD("speed") " 10s/60s/15m " CYAN_BOLD("%s") CYAN(" %s %s ") CYAN_BOLD("H/s") " max " CYAN_BOLD("%s H/s"),
+             Hashrate::format(speed[0],             num,         sizeof(num) / 4),
+             Hashrate::format(speed[1],             num + 8,     sizeof(num) / 4),
+             Hashrate::format(speed[2],             num + 8 * 2, sizeof(num) / 4 ),
+             Hashrate::format(d_ptr->maxHashrate,   num + 8 * 3, sizeof(num) / 4)
+             );
 }
 
 
@@ -203,10 +226,18 @@ void xmrig::Miner::stop()
 
 void xmrig::Miner::onTimer(const Timer *)
 {
+    double maxHashrate = 0.0;
+
     for (IBackend *backend : d_ptr->backends) {
         backend->tick(d_ptr->ticks);
+
+        if (backend->hashrate()) {
+            maxHashrate += backend->hashrate()->calc(Hashrate::ShortInterval);
+        }
     }
 
+    d_ptr->maxHashrate = std::max(d_ptr->maxHashrate, maxHashrate);
+
     if ((d_ptr->ticks % (d_ptr->controller->config()->printTime() * 2)) == 0) {
         printHashrate(false);
     }
diff --git a/src/core/Miner.h b/src/core/Miner.h
index e7904575b..f32524a7c 100644
--- a/src/core/Miner.h
+++ b/src/core/Miner.h
@@ -26,6 +26,9 @@
 #define XMRIG_MINER_H
 
 
+#include <vector>
+
+
 #include "base/kernel/interfaces/ITimerListener.h"
 
 
@@ -35,6 +38,7 @@ namespace xmrig {
 class Controller;
 class Job;
 class MinerPrivate;
+class IBackend;
 
 
 class Miner : public ITimerListener
@@ -44,6 +48,7 @@ public:
     ~Miner() override;
 
     bool isEnabled() const;
+    const std::vector<IBackend *> &backends() const;
     Job job() const;
     void pause();
     void printHashrate(bool details);
diff --git a/src/workers/WorkersLegacy.cpp b/src/workers/WorkersLegacy.cpp
index 29571608d..0db0a3cff 100644
--- a/src/workers/WorkersLegacy.cpp
+++ b/src/workers/WorkersLegacy.cpp
@@ -40,13 +40,13 @@
 #include "crypto/rx/RxDataset.h"
 #include "Mem.h"
 #include "rapidjson/document.h"
-#include "workers/Hashrate.h"
+//#include "workers/Hashrate.h"
 #include "workers/WorkersLegacy.h"
 
 
 bool WorkersLegacy::m_active = false;
 bool WorkersLegacy::m_enabled = true;
-Hashrate *WorkersLegacy::m_hashrate = nullptr;
+//Hashrate *WorkersLegacy::m_hashrate = nullptr;
 xmrig::Job WorkersLegacy::m_job;
 WorkersLegacy::LaunchStatus WorkersLegacy::m_status;
 std::vector<xmrig::Thread<xmrig::CpuLaunchData>* > WorkersLegacy::m_workers;
@@ -96,38 +96,6 @@ size_t WorkersLegacy::threads()
 //}
 
 
-//void Workers::printHashrate(bool detail)
-//{
-//    assert(m_controller != nullptr);
-//    if (!m_controller) {
-//        return;
-//    }
-
-//    if (detail) {
-//        char num1[8] = { 0 };
-//        char num2[8] = { 0 };
-//        char num3[8] = { 0 };
-
-//        xmrig::Log::print(WHITE_BOLD_S "| THREAD | AFFINITY | 10s H/s | 60s H/s | 15m H/s |");
-
-//        size_t i = 0;
-//        for (const xmrig::IThread *thread : m_controller->config()->threads()) {
-//             xmrig::Log::print("| %6zu | %8" PRId64 " | %7s | %7s | %7s |",
-//                            thread->index(),
-//                            thread->affinity(),
-//                            Hashrate::format(m_hashrate->calc(thread->index(), Hashrate::ShortInterval),  num1, sizeof num1),
-//                            Hashrate::format(m_hashrate->calc(thread->index(), Hashrate::MediumInterval), num2, sizeof num2),
-//                            Hashrate::format(m_hashrate->calc(thread->index(), Hashrate::LargeInterval),  num3, sizeof num3)
-//                            );
-
-//             i++;
-//        }
-//    }
-
-//    m_hashrate->print();
-//}
-
-
 //void Workers::setEnabled(bool enabled)
 //{
 //    if (m_enabled == enabled) {
@@ -186,7 +154,7 @@ void WorkersLegacy::start(xmrig::Controller *controller)
        m_status.ways += thread.intensity();
     }
 
-    m_hashrate = new Hashrate(threads.size(), controller);
+//    m_hashrate = new Hashrate(threads.size(), controller);
 
     uv_mutex_init(&m_mutex);
     uv_rwlock_init(&m_rwlock);
@@ -238,66 +206,24 @@ void WorkersLegacy::threadsSummary(rapidjson::Document &doc)
 #endif
 
 
-//void WorkersLegacy::onReady(void *arg)
+//void WorkersLegacy::onTick(uv_timer_t *)
 //{
 //    using namespace xmrig;
 
-//    auto handle = static_cast<Thread<CpuLaunchData>* >(arg);
+//    for (Thread<CpuLaunchData> *handle : m_workers) {
+//        if (!handle->worker()) {
+//            return;
+//        }
 
-//    xmrig::IWorker *worker = nullptr;
-
-//    switch (handle->config().intensity) {
-//    case 1:
-//        worker = new CpuWorker<1>(handle->index(), handle->config());
-//        break;
-
-//    case 2:
-//        worker = new CpuWorker<2>(handle->index(), handle->config());
-//        break;
-
-//    case 3:
-//        worker = new CpuWorker<3>(handle->index(), handle->config());
-//        break;
-
-//    case 4:
-//        worker = new CpuWorker<4>(handle->index(), handle->config());
-//        break;
-
-//    case 5:
-//        worker = new CpuWorker<5>(handle->index(), handle->config());
-//        break;
+//        m_hashrate->add(handle->index(), handle->worker()->hashCount(), handle->worker()->timestamp());
 //    }
 
-//    handle->setWorker(worker);
-
-//    if (!worker->selfTest()) {
-//        LOG_ERR("thread %zu error: \"hash self-test failed\".", handle->worker()->id());
-
-//        return;
+//    if ((m_ticks++ & 0xF) == 0)  {
+//        m_hashrate->updateHighest();
 //    }
-
-//    start(worker);
 //}
 
 
-void WorkersLegacy::onTick(uv_timer_t *)
-{
-    using namespace xmrig;
-
-    for (Thread<CpuLaunchData> *handle : m_workers) {
-        if (!handle->worker()) {
-            return;
-        }
-
-        m_hashrate->add(handle->index(), handle->worker()->hashCount(), handle->worker()->timestamp());
-    }
-
-    if ((m_ticks++ & 0xF) == 0)  {
-        m_hashrate->updateHighest();
-    }
-}
-
-
 void WorkersLegacy::start(xmrig::IWorker *worker)
 {
 //    const Worker *w = static_cast<const Worker *>(worker);
diff --git a/src/workers/WorkersLegacy.h b/src/workers/WorkersLegacy.h
index 5ee53dbf5..be9e417af 100644
--- a/src/workers/WorkersLegacy.h
+++ b/src/workers/WorkersLegacy.h
@@ -42,7 +42,7 @@
 #include "rapidjson/fwd.h"
 
 
-class Hashrate;
+//class Hashrate;
 
 
 namespace xmrig {
@@ -66,7 +66,7 @@ public:
 //    static xmrig::Job job();
 
 //    static inline bool isEnabled()                                      { return m_enabled; }
-    static inline Hashrate *hashrate()                                  { return m_hashrate; }
+//    static inline Hashrate *hashrate()                                  { return m_hashrate; }
 
 #   ifdef XMRIG_FEATURE_API
     static void threadsSummary(rapidjson::Document &doc);
@@ -74,7 +74,7 @@ public:
 
 private:
 //    static void onReady(void *arg);
-    static void onTick(uv_timer_t *handle);
+//    static void onTick(uv_timer_t *handle);
     static void start(xmrig::IWorker *worker);
 
     class LaunchStatus
@@ -98,7 +98,7 @@ private:
 
     static bool m_active;
     static bool m_enabled;
-    static Hashrate *m_hashrate;
+//    static Hashrate *m_hashrate;
     static xmrig::Job m_job;
     static LaunchStatus m_status;
     static std::vector<xmrig::Thread<xmrig::CpuLaunchData>* > m_workers;