diff --git a/BUILD b/BUILD
index 0a5139d447fdf978fca98bdbc7460a5023c39efa..f6c4338493aa8881d145b2a95702fe9ed54649ed 100644
--- a/BUILD
+++ b/BUILD
@@ -283,7 +283,7 @@ cc_library(
     "src/core/tsi/transport_security.h",
     "src/core/tsi/transport_security_interface.h",
     "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
     "src/core/census/rpc_metric_id.h",
     "src/core/census/grpc_context.c",
     "src/core/census/grpc_filter.c",
@@ -436,7 +436,7 @@ cc_library(
     "src/core/tsi/transport_security.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
     "src/core/census/operation.c",
     "src/core/census/placeholders.c",
     "src/core/census/tracing.c",
@@ -589,7 +589,7 @@ cc_library(
     "src/core/transport/transport.h",
     "src/core/transport/transport_impl.h",
     "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
     "src/core/census/rpc_metric_id.h",
     "src/core/surface/init_unsecure.c",
     "src/core/census/grpc_context.c",
@@ -722,7 +722,7 @@ cc_library(
     "src/core/transport/transport_op_string.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
     "src/core/census/operation.c",
     "src/core/census/placeholders.c",
     "src/core/census/tracing.c",
@@ -1400,7 +1400,7 @@ objc_library(
     "src/core/tsi/transport_security.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
     "src/core/census/operation.c",
     "src/core/census/placeholders.c",
     "src/core/census/tracing.c",
@@ -1548,7 +1548,7 @@ objc_library(
     "src/core/tsi/transport_security.h",
     "src/core/tsi/transport_security_interface.h",
     "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
     "src/core/census/rpc_metric_id.h",
   ],
   includes = [
diff --git a/Makefile b/Makefile
index 51b892187beca260cfdcdb8db826d6d7afebbd5c..f285d5a01c3c8a7ca38d72c0b3d0159102f388f7 100644
--- a/Makefile
+++ b/Makefile
@@ -2469,7 +2469,7 @@ LIBGRPC_SRC = \
     src/core/tsi/transport_security.c \
     src/core/census/context.c \
     src/core/census/initialize.c \
-    src/core/census/log.c \
+    src/core/census/mlog.c \
     src/core/census/operation.c \
     src/core/census/placeholders.c \
     src/core/census/tracing.c \
@@ -2792,7 +2792,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/transport/transport_op_string.c \
     src/core/census/context.c \
     src/core/census/initialize.c \
-    src/core/census/log.c \
+    src/core/census/mlog.c \
     src/core/census/operation.c \
     src/core/census/placeholders.c \
     src/core/census/tracing.c \
@@ -5877,7 +5877,7 @@ endif
 
 
 CENSUS_LOG_TEST_SRC = \
-    test/core/census/log_test.c \
+    test/core/census/mlog_test.c \
 
 CENSUS_LOG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CENSUS_LOG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -5897,7 +5897,7 @@ $(BINDIR)/$(CONFIG)/census_log_test: $(CENSUS_LOG_TEST_OBJS) $(LIBDIR)/$(CONFIG)
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/census/log_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/census/mlog_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_census_log_test: $(CENSUS_LOG_TEST_OBJS:.o=.dep)
 
diff --git a/binding.gyp b/binding.gyp
index a2a64fff13af7aa19b3e216eeaa91d8960853d01..0f5817e8dc2fa97bffa18a70f315106dc936247f 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -708,7 +708,7 @@
         'src/core/tsi/transport_security.c',
         'src/core/census/context.c',
         'src/core/census/initialize.c',
-        'src/core/census/log.c',
+        'src/core/census/mlog.c',
         'src/core/census/operation.c',
         'src/core/census/placeholders.c',
         'src/core/census/tracing.c',
diff --git a/build.yaml b/build.yaml
index cb6cb56844829a7b9429f42af43df448ffa307df..793cb8292dc0acfd56e1180d75695b3ec294a0a8 100644
--- a/build.yaml
+++ b/build.yaml
@@ -14,12 +14,12 @@ filegroups:
   - include/grpc/census.h
   headers:
   - src/core/census/aggregation.h
-  - src/core/census/log.h
+  - src/core/census/mlog.h
   - src/core/census/rpc_metric_id.h
   src:
   - src/core/census/context.c
   - src/core/census/initialize.c
-  - src/core/census/log.c
+  - src/core/census/mlog.c
   - src/core/census/operation.c
   - src/core/census/placeholders.c
   - src/core/census/tracing.c
@@ -982,7 +982,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/census/log_test.c
+  - test/core/census/mlog_test.c
   deps:
   - grpc_test_util
   - grpc
diff --git a/gRPC.podspec b/gRPC.podspec
index d2d151b96ecba537c5dc17a005f6807386654fd7..b40c80a0812579039cd6018bf47b3f634e05bc86 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -287,7 +287,7 @@ Pod::Spec.new do |s|
                       'src/core/tsi/transport_security.h',
                       'src/core/tsi/transport_security_interface.h',
                       'src/core/census/aggregation.h',
-                      'src/core/census/log.h',
+                      'src/core/census/mlog.h',
                       'src/core/census/rpc_metric_id.h',
                       'include/grpc/grpc_security.h',
                       'include/grpc/impl/codegen/byte_buffer.h',
@@ -453,7 +453,7 @@ Pod::Spec.new do |s|
                       'src/core/tsi/transport_security.c',
                       'src/core/census/context.c',
                       'src/core/census/initialize.c',
-                      'src/core/census/log.c',
+                      'src/core/census/mlog.c',
                       'src/core/census/operation.c',
                       'src/core/census/placeholders.c',
                       'src/core/census/tracing.c'
@@ -597,7 +597,7 @@ Pod::Spec.new do |s|
                               'src/core/tsi/transport_security.h',
                               'src/core/tsi/transport_security_interface.h',
                               'src/core/census/aggregation.h',
-                              'src/core/census/log.h',
+                              'src/core/census/mlog.h',
                               'src/core/census/rpc_metric_id.h'
 
     ss.header_mappings_dir = '.'
diff --git a/grpc.gemspec b/grpc.gemspec
index 061b0f2e94337e284d3080c118daf317a906b30e..ae8cfaf7c905ba3f88e57287076a13688d84f3e4 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -283,7 +283,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/tsi/transport_security.h )
   s.files += %w( src/core/tsi/transport_security_interface.h )
   s.files += %w( src/core/census/aggregation.h )
-  s.files += %w( src/core/census/log.h )
+  s.files += %w( src/core/census/mlog.h )
   s.files += %w( src/core/census/rpc_metric_id.h )
   s.files += %w( src/core/census/grpc_context.c )
   s.files += %w( src/core/census/grpc_filter.c )
@@ -436,7 +436,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/tsi/transport_security.c )
   s.files += %w( src/core/census/context.c )
   s.files += %w( src/core/census/initialize.c )
-  s.files += %w( src/core/census/log.c )
+  s.files += %w( src/core/census/mlog.c )
   s.files += %w( src/core/census/operation.c )
   s.files += %w( src/core/census/placeholders.c )
   s.files += %w( src/core/census/tracing.c )
diff --git a/package.json b/package.json
index 0f7f4545ce826bfa52333d20ec108f8046df8d8d..d843020eaf3e09905504892939a24cbccec2d778 100644
--- a/package.json
+++ b/package.json
@@ -228,7 +228,7 @@
     "src/core/tsi/transport_security.h",
     "src/core/tsi/transport_security_interface.h",
     "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
     "src/core/census/rpc_metric_id.h",
     "src/core/census/grpc_context.c",
     "src/core/census/grpc_filter.c",
@@ -381,7 +381,7 @@
     "src/core/tsi/transport_security.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
     "src/core/census/operation.c",
     "src/core/census/placeholders.c",
     "src/core/census/tracing.c",
diff --git a/src/core/census/log.c b/src/core/census/mlog.c
similarity index 99%
rename from src/core/census/log.c
rename to src/core/census/mlog.c
index 91b26941b83a38ac8ff3518717b471306d7abfc8..a2cc46d3f261c06df0446567807fdc6a7163eb51 100644
--- a/src/core/census/log.c
+++ b/src/core/census/mlog.c
@@ -88,7 +88,7 @@
 // include the name of the structure, which will be passed as the first
 // argument. E.g. cl_block_initialize() will initialize a cl_block.
 
-#include "src/core/census/log.h"
+#include "src/core/census/mlog.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/cpu.h>
diff --git a/src/core/census/log.h b/src/core/census/mlog.h
similarity index 96%
rename from src/core/census/log.h
rename to src/core/census/mlog.h
index 05daea066f597d8905fa2d60b8f2e3061ccbd904..aaba9e15356223b466b97f32de4af96fd17ec71f 100644
--- a/src/core/census/log.h
+++ b/src/core/census/mlog.h
@@ -31,8 +31,10 @@
  *
  */
 
-#ifndef GRPC_INTERNAL_CORE_CENSUS_LOG_H
-#define GRPC_INTERNAL_CORE_CENSUS_LOG_H
+/* A very fast in-memory log, optimized for multiple writers. */
+
+#ifndef GRPC_INTERNAL_CORE_CENSUS_MLOG_H
+#define GRPC_INTERNAL_CORE_CENSUS_MLOG_H
 
 #include <grpc/support/port_platform.h>
 #include <stddef.h>
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index f43ac5c0a53abbe74e1e4d159e5059f4856fd48e..a002a5a0a8d45d40ded2d094faeae8d811759748 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -224,7 +224,7 @@ CORE_SOURCE_FILES = [
   'src/core/tsi/transport_security.c',
   'src/core/census/context.c',
   'src/core/census/initialize.c',
-  'src/core/census/log.c',
+  'src/core/census/mlog.c',
   'src/core/census/operation.c',
   'src/core/census/placeholders.c',
   'src/core/census/tracing.c',
diff --git a/test/core/census/log_test.c b/test/core/census/mlog_test.c
similarity index 99%
rename from test/core/census/log_test.c
rename to test/core/census/mlog_test.c
index b68ca115045b94c6c8951cb354107a22023a6121..5b6c5946ab5799e37b476fb26c8b5b2e10dfaee7 100644
--- a/test/core/census/log_test.c
+++ b/test/core/census/mlog_test.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/census/log.h"
+#include "src/core/census/mlog.h"
 #include <grpc/support/cpu.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 84250e74c59021273466ef16384a0170f1f5fdb4..b48901e910a7fdf752ea508154670ee8fe879bde 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -902,7 +902,7 @@ src/core/tsi/ssl_types.h \
 src/core/tsi/transport_security.h \
 src/core/tsi/transport_security_interface.h \
 src/core/census/aggregation.h \
-src/core/census/log.h \
+src/core/census/mlog.h \
 src/core/census/rpc_metric_id.h \
 src/core/census/grpc_context.c \
 src/core/census/grpc_filter.c \
@@ -1055,7 +1055,7 @@ src/core/tsi/ssl_transport_security.c \
 src/core/tsi/transport_security.c \
 src/core/census/context.c \
 src/core/census/initialize.c \
-src/core/census/log.c \
+src/core/census/mlog.c \
 src/core/census/operation.c \
 src/core/census/placeholders.c \
 src/core/census/tracing.c \
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 3cdd7b453cbbc893d6aa377a5d73aee8eeb766f1..b22a5a135f83cf64f14ae4e7dc44fa3b5aa6861d 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -92,7 +92,7 @@
     "language": "c", 
     "name": "census_log_test", 
     "src": [
-      "test/core/census/log_test.c"
+      "test/core/census/mlog_test.c"
     ]
   }, 
   {
@@ -2983,7 +2983,7 @@
       "include/grpc/status.h", 
       "src/core/census/aggregation.h", 
       "src/core/census/grpc_filter.h", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.h", 
       "src/core/census/rpc_metric_id.h", 
       "src/core/channel/channel_args.h", 
       "src/core/channel/channel_stack.h", 
@@ -3135,8 +3135,8 @@
       "src/core/census/grpc_filter.c", 
       "src/core/census/grpc_filter.h", 
       "src/core/census/initialize.c", 
-      "src/core/census/log.c", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.c", 
+      "src/core/census/mlog.h", 
       "src/core/census/operation.c", 
       "src/core/census/placeholders.c", 
       "src/core/census/rpc_metric_id.h", 
@@ -3524,7 +3524,7 @@
       "include/grpc/status.h", 
       "src/core/census/aggregation.h", 
       "src/core/census/grpc_filter.h", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.h", 
       "src/core/census/rpc_metric_id.h", 
       "src/core/channel/channel_args.h", 
       "src/core/channel/channel_stack.h", 
@@ -3661,8 +3661,8 @@
       "src/core/census/grpc_filter.c", 
       "src/core/census/grpc_filter.h", 
       "src/core/census/initialize.c", 
-      "src/core/census/log.c", 
-      "src/core/census/log.h", 
+      "src/core/census/mlog.c", 
+      "src/core/census/mlog.h", 
       "src/core/census/operation.c", 
       "src/core/census/placeholders.c", 
       "src/core/census/rpc_metric_id.h", 
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index a426e41d0a379c63eb2d5f005117ea33bd418161..ebab196fcbf8b37125b06624383d6ccd7cca7c87 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -411,7 +411,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h" />
   </ItemGroup>
   <ItemGroup>
@@ -717,7 +717,7 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
     </ClCompile>
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index 0b99cba0777c2618b688b2843b757f1f5f58392b..68fc952fd624c3ed377e8fa787aba30966d54bda 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -454,7 +454,7 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
@@ -896,7 +896,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h">
       <Filter>src\core\census</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h">
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h">
       <Filter>src\core\census</Filter>
     </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h">
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index 2092397136f13fa8406af5fa3e43f35ee1e9ef78..5daa7900f8ff3112c3de15cc66dbea942e5df82f 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -387,7 +387,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\transport\transport.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\transport\transport_impl.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h" />
   </ItemGroup>
   <ItemGroup>
@@ -653,7 +653,7 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
     </ClCompile>
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index f6e5275b799382a63c99006e9ac02be8397b152d..68f136398bd25c97af4f113585288fe143adaab3 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -394,7 +394,7 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\census\initialize.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\census\log.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\census\mlog.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\census\operation.c">
@@ -791,7 +791,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\census\aggregation.h">
       <Filter>src\core\census</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\census\log.h">
+    <ClInclude Include="$(SolutionDir)\..\src\core\census\mlog.h">
       <Filter>src\core\census</Filter>
     </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\census\rpc_metric_id.h">
diff --git a/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj b/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj
index 851086d663539777b2a10fedf4893db75d8200b3..9f2480085b54c6069b26e57f2c37bb2317593ca8 100644
--- a/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj
+++ b/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj
@@ -158,7 +158,7 @@
   </ItemDefinitionGroup>
 
   <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\test\core\census\log_test.c">
+    <ClCompile Include="$(SolutionDir)\..\test\core\census\mlog_test.c">
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
diff --git a/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj.filters b/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj.filters
index 135c77847f926e6a334f3da7c8b76eb9a7863eea..8b70dcb2a41bec7e9e798620a9c10c40d3840d16 100644
--- a/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/census_log_test/census_log_test.vcxproj.filters
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\test\core\census\log_test.c">
+    <ClCompile Include="$(SolutionDir)\..\test\core\census\mlog_test.c">
       <Filter>test\core\census</Filter>
     </ClCompile>
   </ItemGroup>