diff --git a/src/vsg/io/VSG.cpp b/src/vsg/io/VSG.cpp
index 5a46a7264..9077349a9 100644
--- a/src/vsg/io/VSG.cpp
+++ b/src/vsg/io/VSG.cpp
@@ -93,6 +93,8 @@ void VSG::writeHeader(std::ostream& fout, const FormatInfo& formatInfo) const
 
 vsg::ref_ptr<vsg::Object> VSG::read(const vsg::Path& filename, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (!compatibleExtension(filename, options, ".vsgb", ".vsgt")) return {};
 
     vsg::Path filenameToUse = findFile(filename, options);
@@ -123,6 +125,8 @@ vsg::ref_ptr<vsg::Object> VSG::read(const vsg::Path& filename, ref_ptr<const Opt
 
 vsg::ref_ptr<vsg::Object> VSG::read(std::istream& fin, vsg::ref_ptr<const vsg::Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (options && !compatibleExtension(options, ".vsgb", ".vsgt")) return {};
 
     auto [type, version] = readHeader(fin);
@@ -144,6 +148,8 @@ vsg::ref_ptr<vsg::Object> VSG::read(std::istream& fin, vsg::ref_ptr<const vsg::O
 
 vsg::ref_ptr<vsg::Object> VSG::read(const uint8_t* ptr, size_t size, vsg::ref_ptr<const vsg::Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (options && !compatibleExtension(options, ".vsgb", ".vsgt")) return {};
 
     mem_stream fin(ptr, size);
@@ -152,6 +158,8 @@ vsg::ref_ptr<vsg::Object> VSG::read(const uint8_t* ptr, size_t size, vsg::ref_pt
 
 bool VSG::write(const vsg::Object* object, const vsg::Path& filename, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     auto version = vsgGetVersion();
 
     if (options)
@@ -192,6 +200,8 @@ bool VSG::write(const vsg::Object* object, const vsg::Path& filename, ref_ptr<co
 
 bool VSG::write(const vsg::Object* object, std::ostream& fout, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (options && !compatibleExtension(options, ".vsgb", ".vsgt")) return {};
 
     auto version = vsgGetVersion();
diff --git a/src/vsg/io/glsl.cpp b/src/vsg/io/glsl.cpp
index 3802c3ed5..71edc3a75 100644
--- a/src/vsg/io/glsl.cpp
+++ b/src/vsg/io/glsl.cpp
@@ -48,6 +48,8 @@ bool glsl::extensionSupported(const Path& ext)
 
 ref_ptr<Object> glsl::createShader(const Path& found_filename, std::string& source, VkShaderStageFlagBits stageFlagBits, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     // handle any #includes in the source
     if (source.find("include") != std::string::npos)
     {
@@ -66,6 +68,8 @@ ref_ptr<Object> glsl::createShader(const Path& found_filename, std::string& sour
 
 ref_ptr<Object> glsl::read(const Path& filename, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     auto stage_itr = (options && options->extensionHint) ? s_extensionToStage.find(options->extensionHint) : s_extensionToStage.end();
     if (stage_itr == s_extensionToStage.end()) stage_itr = s_extensionToStage.find(lowerCaseFileExtension(filename));
     if (stage_itr == s_extensionToStage.end()) return {};
@@ -88,6 +92,8 @@ ref_ptr<Object> glsl::read(const Path& filename, ref_ptr<const Options> options)
 
 ref_ptr<vsg::Object> glsl::read(std::istream& fin, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     auto stage_itr = (options && options->extensionHint) ? s_extensionToStage.find(options->extensionHint) : s_extensionToStage.end();
     if (stage_itr == s_extensionToStage.end()) return {};
 
@@ -104,6 +110,8 @@ ref_ptr<vsg::Object> glsl::read(std::istream& fin, ref_ptr<const Options> option
 
 ref_ptr<vsg::Object> glsl::read(const uint8_t* ptr, size_t size, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     auto stage_itr = (options && options->extensionHint) ? s_extensionToStage.find(options->extensionHint) : s_extensionToStage.end();
     if (stage_itr == s_extensionToStage.end()) return {};
 
@@ -114,6 +122,8 @@ ref_ptr<vsg::Object> glsl::read(const uint8_t* ptr, size_t size, ref_ptr<const O
 
 bool glsl::write(const Object* object, const Path& filename, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     auto stage_itr = (options && options->extensionHint) ? s_extensionToStage.find(options->extensionHint) : s_extensionToStage.end();
     if (stage_itr == s_extensionToStage.end()) stage_itr = s_extensionToStage.find(lowerCaseFileExtension(filename));
     if (stage_itr == s_extensionToStage.end()) return false;
diff --git a/src/vsg/io/spirv.cpp b/src/vsg/io/spirv.cpp
index e1a50f731..06943c521 100644
--- a/src/vsg/io/spirv.cpp
+++ b/src/vsg/io/spirv.cpp
@@ -45,6 +45,8 @@ spirv::spirv()
 
 vsg::ref_ptr<vsg::Object> spirv::read(const vsg::Path& filename, vsg::ref_ptr<const vsg::Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (!compatibleExtension(filename, options, ".spv")) return {};
 
     vsg::Path found_filename = vsg::findFile(filename, options);
@@ -57,6 +59,8 @@ vsg::ref_ptr<vsg::Object> spirv::read(const vsg::Path& filename, vsg::ref_ptr<co
 
 ref_ptr<vsg::Object> spirv::read(std::istream& fin, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (!compatibleExtension(options, ".spv")) return {};
 
     fin.seekg(0, fin.end);
@@ -77,6 +81,8 @@ ref_ptr<vsg::Object> spirv::read(std::istream& fin, ref_ptr<const Options> optio
 
 ref_ptr<vsg::Object> spirv::read(const uint8_t* ptr, size_t size, ref_ptr<const Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (!compatibleExtension(options, ".spv")) return {};
 
     using value_type = vsg::ShaderModule::SPIRV::value_type;
@@ -91,6 +97,8 @@ ref_ptr<vsg::Object> spirv::read(const uint8_t* ptr, size_t size, ref_ptr<const
 
 bool spirv::write(const vsg::Object* object, const vsg::Path& filename, vsg::ref_ptr<const vsg::Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (!compatibleExtension(filename, options, ".spv")) return false;
 
     const vsg::ShaderStage* ss = dynamic_cast<const vsg::ShaderStage*>(object);
diff --git a/src/vsg/io/tile.cpp b/src/vsg/io/tile.cpp
index 83d983c3d..92ad334d3 100644
--- a/src/vsg/io/tile.cpp
+++ b/src/vsg/io/tile.cpp
@@ -117,6 +117,8 @@ vsg::Path tile::getTilePath(const vsg::Path& src, uint32_t x, uint32_t y, uint32
 
 vsg::ref_ptr<vsg::Object> tile::read(const vsg::Path& filename, vsg::ref_ptr<const vsg::Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     auto extension = vsg::lowerCaseFileExtension(filename);
     if (extension != ".tile") return {};
 
@@ -140,6 +142,8 @@ vsg::ref_ptr<vsg::Object> tile::read(const vsg::Path& filename, vsg::ref_ptr<con
 
 vsg::ref_ptr<vsg::Object> tile::read_root(vsg::ref_ptr<const vsg::Options> options) const
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     auto group = createRoot();
 
     uint32_t lod = 0;
@@ -199,8 +203,9 @@ vsg::ref_ptr<vsg::Object> tile::read_root(vsg::ref_ptr<const vsg::Options> optio
 
 vsg::ref_ptr<vsg::Object> tile::read_subtile(uint32_t x, uint32_t y, uint32_t lod, vsg::ref_ptr<const vsg::Options> options) const
 {
-    // need to load subtile x y lod
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
 
+    // need to load subtile x y lod
     vsg::time_point start_read = vsg::clock::now();
 
     auto group = vsg::Group::create();
@@ -294,6 +299,8 @@ vsg::ref_ptr<vsg::Object> tile::read_subtile(uint32_t x, uint32_t y, uint32_t lo
 
 void tile::init(vsg::ref_ptr<const vsg::Options> options)
 {
+    CPU_INSTRUMENTATION_L1(options ? options->instrumentation.get() : nullptr);
+
     if (settings->shaderSet)
     {
         _shaderSet = settings->shaderSet;