diff --git a/example1/example.rkt b/example1/example.rkt
index a946d30..beec84b 100644
--- a/example1/example.rkt
+++ b/example1/example.rkt
@@ -312,7 +312,9 @@
       )
     )
   )
-    
+
+(webview-set-loglevel 'debug)
+
 (define (run-example)
   (let* ((ini (new ini% [file 'web-racket-example1]))
          (context (new wv-context% [base-path cur-dir] [ini ini]))
diff --git a/main.rkt b/main.rkt
index e728138..1be7cee 100644
--- a/main.rkt
+++ b/main.rkt
@@ -1,5 +1,6 @@
 #lang racket/base
 
+(require "private/racket-webview.rkt")
 (require "private/wv-context.rkt")
 (require "private/wv-window.rkt")
 (require "private/wv-dialog.rkt")
@@ -8,4 +9,5 @@
                        "private/wv-window.rkt"
                        "private/wv-dialog.rkt"
                        )
+         webview-set-loglevel
          )
diff --git a/private/lib/linux/x86_64/librktwebview.so b/private/lib/linux/x86_64/librktwebview.so
index 3ca127e..72d5008 100755
Binary files a/private/lib/linux/x86_64/librktwebview.so and b/private/lib/linux/x86_64/librktwebview.so differ
diff --git a/private/lib/linux/x86_64/rktwebview_prg b/private/lib/linux/x86_64/rktwebview_prg
index d65bb72..b8db3e4 100755
Binary files a/private/lib/linux/x86_64/rktwebview_prg and b/private/lib/linux/x86_64/rktwebview_prg differ
diff --git a/private/racket-webview-qt.rkt b/private/racket-webview-qt.rkt
index 3240ae3..ac3113a 100644
--- a/private/racket-webview-qt.rkt
+++ b/private/racket-webview-qt.rkt
@@ -44,6 +44,7 @@
          rkt-webview-file-save
          rkt-webview-messagebox
          rkt-webview-version
+         rkt-webview-set-loglevel
          )
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -193,6 +194,14 @@
 ;; Types / Functions
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
+(define _rkt_loglevel_t
+  (_enum '(error = 1
+           warning = 2
+           info = 3
+           debug = 4)
+         )
+  )
+
 (define _rkt_result_t
   (_enum '(no_result_yet = -1
            oke = 0
@@ -286,6 +295,9 @@
 (define-rktwebview rkt_webview_cleanup
   (_fun -> _void))
 
+;RKTWEBVIEW_EXPORT void rkt_webview_set_loglevel(rkt_webview_loglevel_t l);
+(define-rktwebview rkt_webview_set_loglevel
+  (_fun _rkt_loglevel_t -> _void))
 
 ;RKTWEBVIEW_EXPORT int rkt_webview_events_waiting();
 (define-rktwebview rkt_webview_events_waiting
@@ -580,6 +592,9 @@
   ((rkt-wv-close-callback handle))
   #t)
 
+(define (rkt-webview-set-loglevel l)
+  (rkt_webview_set_loglevel l))
+
 (define (rkt-webview-set-ou-token handle token)
   (rkt_webview_set_ou_token (rkt-wv-win handle) token)
   #t)
diff --git a/private/racket-webview.rkt b/private/racket-webview.rkt
index e986420..7d3a17a 100644
--- a/private/racket-webview.rkt
+++ b/private/racket-webview.rkt
@@ -112,6 +112,8 @@
          wv-win-window-nr
          wv-context?
 
+         webview-set-loglevel
+
          ;test
          )
 
@@ -493,6 +495,14 @@
       (rkt-webview-set-html! (wv-win-handle wv) (xexpr->string html))
       )
   )
+
+(define (loglevel? x)
+  (and (symbol? x)
+       (or (eq? x 'error) (eq? x 'info) (eq? x 'debug) (eq? x 'warning))))
+
+(define/contract (webview-set-loglevel l)
+  (-> loglevel? void?)
+  (rkt-webview-set-loglevel l))
   
 (define/contract (webview-set-url! wv url)
   (-> wv-win? (or/c string? url?) symbol?)
diff --git a/rktwebview_qt/main.cpp b/rktwebview_qt/main.cpp
index 86f82ec..aac9b19 100644
--- a/rktwebview_qt/main.cpp
+++ b/rktwebview_qt/main.cpp
@@ -63,7 +63,10 @@ int main(int argc, char *argv[])
 {
     const char *me = argv[0];
 
-    INFO1("%s runs\n", argv[0]);
+    {
+        time_t my_time = time(NULL);
+        INFO1("Starting at %s", ctime(&my_time));
+    }
 
     if (argc < 6) {
         ERROR1("%s: wrong number of arguments\n", me);
@@ -113,6 +116,11 @@ int main(int argc, char *argv[])
     delete handler->shm;
     delete handler;
 
+    {
+        time_t my_time = time(NULL);
+        INFO1("Exiting at %s", ctime(&my_time));
+    }
+
     return 0;
 }
 
@@ -140,6 +148,13 @@ void Handler::run()
                 result_queue->enqueue(oke);
             }
             break;
+            case CMD_SET_LOGLEVEL: {
+                int ll = data_obj["wv"].toInt();
+                setLogLevel(ll);
+                bool oke = true;
+                result_queue->enqueue(oke);
+            }
+            break;
             case CMD_CONTEXT_NEW: {
                 QString boilerplate_js = data_obj["boilerplate_js"].toString();
                 bool has_pem_cert = data_obj["has_pem_cert"].toBool();
diff --git a/rktwebview_qt/rkt_protocol.h b/rktwebview_qt/rkt_protocol.h
index aacfe2b..663bbc3 100644
--- a/rktwebview_qt/rkt_protocol.h
+++ b/rktwebview_qt/rkt_protocol.h
@@ -26,6 +26,7 @@
 #define CMD_FILE_SAVE      23       // arguments: wv: int, title: string, base_dir: string, permitted_exts: string -> result_t: int
 #define CMD_SET_OU_TOKEN   24       // arguments: wv: int, token: string -> result_t: int
 #define CMD_MSG_BOX        25       // arguments: wv: int, title:string, message: string, submessage: string, type:int -> result_t: int
+#define CMD_SET_LOGLEVEL   26       // arguments: ll: int
 
 #define RESULT_QUIT     36379
 
diff --git a/rktwebview_qt/rktwebview.cpp b/rktwebview_qt/rktwebview.cpp
index 716dbac..0aebc2c 100644
--- a/rktwebview_qt/rktwebview.cpp
+++ b/rktwebview_qt/rktwebview.cpp
@@ -7,8 +7,12 @@
 #include <windows.h>
 #include <filesystem>
 #else
+#include <stdlib.h>
 #include <unistd.h>
 #include <spawn.h>
+#include <filesystem>
+#include <sys/types.h>
+#include <pwd.h>
 #endif
 
 #include <fcntl.h>
@@ -101,7 +105,7 @@ bool runRktWebview(Handle_t *handler)
     sa.bInheritHandle = TRUE;
 
     HANDLE h = CreateFile(logfile.c_str(),
-                          FILE_APPEND_DATA,
+                          0, //FILE_APPEND_DATA,
                           FILE_SHARE_WRITE | FILE_SHARE_READ,
                           &sa,
                           OPEN_ALWAYS,
@@ -137,7 +141,19 @@ bool runRktWebview(Handle_t *handler)
 #else
     char *argv[] = { rkt_webview_prg_path, const_cast<char *>(handler->name.c_str()), shm_size_str, command_slot, command_result_slot, event_slot, nullptr };
 
-    int r = posix_spawn(&handler->rkt_webview_prg_pid, rkt_webview_prg_path, nullptr, nullptr, argv, environ);
+    struct passwd *pw = getpwuid(getuid());
+    const char *homedir = pw->pw_dir;
+
+    std::string log_file = std::string(homedir) + "/.racket-webview.log";
+
+    posix_spawn_file_actions_t action;
+    posix_spawn_file_actions_init(&action);
+    posix_spawn_file_actions_addopen(&action, STDOUT_FILENO, log_file.c_str(), O_CREAT|O_WRONLY, 0600);
+    posix_spawn_file_actions_addopen(&action, STDERR_FILENO, log_file.c_str(), O_WRONLY|O_APPEND, 0600);
+
+    int r = posix_spawn(&handler->rkt_webview_prg_pid, rkt_webview_prg_path, &action, nullptr, argv, environ);
+
+    posix_spawn_file_actions_destroy(&action);
 
     return (r == 0);
 #endif
@@ -443,6 +459,15 @@ result_t rkt_webview_show_normal(rktwebview_t w)
     CMDRES0(CMD_SHOW_NORMAL, w)
 }
 
+void rkt_webview_set_loglevel(rkt_webview_loglevel_t l)
+{
+    auto f = [l]() {
+        CMDRES0(CMD_SET_LOGLEVEL, static_cast<int>(l));
+    };
+    f();
+}
+
+
 window_state_t rkt_webview_window_state(rktwebview_t w)
 {
     auto f = [w]() {
@@ -550,7 +575,8 @@ void rkt_webview_env(const char *env_cmds[])
 #ifdef WIN32
         _putenv(env_cmds[i]);
 #else
-        putenv(env_cmds[i]);
+        putenv(const_cast<char *>(env_cmds[i]));
 #endif
     }
 }
+
diff --git a/rktwebview_qt/rktwebview.h b/rktwebview_qt/rktwebview.h
index 5bd8fd2..c969e5f 100644
--- a/rktwebview_qt/rktwebview.h
+++ b/rktwebview_qt/rktwebview.h
@@ -13,6 +13,7 @@ extern "C" {
 RKTWEBVIEW_EXPORT void rkt_webview_env(const char *env_cmds[]);
 RKTWEBVIEW_EXPORT void rkt_webview_init();
 RKTWEBVIEW_EXPORT void rkt_webview_cleanup();
+RKTWEBVIEW_EXPORT void rkt_webview_set_loglevel(rkt_webview_loglevel_t l);
 //RKTWEBVIEW_EXPORT void rkt_webview_process_events(int for_ms);
 
 RKTWEBVIEW_EXPORT void rkt_webview_free_data(rkt_data_t *d);
diff --git a/rktwebview_qt/rktwebview_types.h b/rktwebview_qt/rktwebview_types.h
index e0b1e19..a1edcc8 100644
--- a/rktwebview_qt/rktwebview_types.h
+++ b/rktwebview_qt/rktwebview_types.h
@@ -11,6 +11,14 @@ typedef struct {
     char        *event;
 } rkt_event_t;
 
+
+typedef enum {
+    log_error = 1,
+    log_warning = 2,
+    log_info = 3,
+    log_debug = 4
+} rkt_webview_loglevel_t;
+
 typedef enum {
     no_result_yet = -1,
     oke = 0,
diff --git a/rktwebview_qt/shm.cpp b/rktwebview_qt/shm.cpp
index 869831a..74c3fe8 100644
--- a/rktwebview_qt/shm.cpp
+++ b/rktwebview_qt/shm.cpp
@@ -3,6 +3,10 @@
 #include <string.h>
 #include <stdio.h>
 
+#ifdef __linux
+#define _strdup strdup
+#endif
+
 typedef struct __shm_item__ {
 
     ShmPlace next;
@@ -263,7 +267,7 @@ public:
             _sem = sem_open(_sem_name, O_RDWR, S_IRUSR | S_IWUSR, 0);
             _shm_fd = shm_open(name, O_RDWR, 0600);
         }
-        _mem = mmap(nullptr, _size, PROT_READ|PROT_WRITE, MAP_SHARED, _shm_fd, 0);
+        _mem = reinterpret_cast<char *>(mmap(nullptr, _size, PROT_READ|PROT_WRITE, MAP_SHARED, _shm_fd, 0));
 
         _slots = reinterpret_cast <ShmPlace *>(_mem + sizeof(int) + sizeof(ShmPlace) + sizeof(ShmPlace));
         _used = reinterpret_cast<int *>(_mem);
@@ -341,10 +345,6 @@ class ShmSemApi {
             }
             free(_name);
         }
-    };
-};
-
-public:
 };
 #endif
 
diff --git a/rktwebview_qt/utils.cpp b/rktwebview_qt/utils.cpp
index 70c1ea2..33b70e6 100644
--- a/rktwebview_qt/utils.cpp
+++ b/rktwebview_qt/utils.cpp
@@ -1,7 +1,17 @@
 
 #include "utils.h"
+#include <chrono>
+
+typedef struct {
+    std::chrono::time_point<std::chrono::system_clock> start;
+} timer;
+
+
 
 static int _log_level = LOG_INFO;
+static timer *_timer = nullptr;
+
+
 
 int logLevel()
 {
@@ -23,3 +33,19 @@ const char *logIndicator(int l)
     }
     return "UNKNOWN";
 }
+
+void logElapsed()
+{
+    if (_timer == nullptr) {
+        _timer = new timer;
+        _timer->start = std::chrono::system_clock::now();
+    }
+
+    auto c = std::chrono::system_clock::now();
+    auto duration = c - _timer->start;
+    auto milliseconds
+        = std::chrono::duration_cast<std::chrono::milliseconds>(
+              duration)
+              .count();
+    fprintf(stderr, "%8.3lf: ", milliseconds/ 1000.0);
+}
diff --git a/rktwebview_qt/utils.h b/rktwebview_qt/utils.h
index 5a20701..b7e42d6 100644
--- a/rktwebview_qt/utils.h
+++ b/rktwebview_qt/utils.h
@@ -28,6 +28,7 @@ inline std::string basedir(const std::string &path)
 
 int logLevel();
 void setLogLevel(int l);
+void logElapsed();
 const char *logIndicator(int l);
 
 #define LOG_ERROR 1
@@ -35,7 +36,7 @@ const char *logIndicator(int l);
 #define LOG_INFO 3
 #define LOG_DEBUG 4
 
-#define MKLOGSTMT(level, code) if (logLevel() >= level) { fprintf(stderr, "%s: ", logIndicator(level));code;fflush(stderr); }
+#define MKLOGSTMT(level, code) if (logLevel() >= level) { fprintf(stderr, "%s: ", logIndicator(level));logElapsed();code;fflush(stderr); }
 #define MKL0(level, msg) MKLOGSTMT(level, fprintf(stderr, msg))
 #define MKL1(level, msg, a) MKLOGSTMT(level, fprintf(stderr, msg, a))
 #define MKL2(level, msg, a, b) MKLOGSTMT(level, fprintf(stderr, msg, a, b))