diff --git a/README.adoc b/README.adoc
index 95211ad..7167199 100644
--- a/README.adoc
+++ b/README.adoc
@@ -19724,8 +19724,9 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 .Busy loop MIPS for different simulator setups
 [options="header"]
 |===
-|LKMC |Benchmark build |Emulator command |Loops |Time (s) |Instruction count |Approximate MIPS
+|Comment |LKMC |Benchmark build |Emulator command |Loops |Time (s) |Instruction count |Approximate MIPS
 
+|
 |a18f28e263c91362519ef550150b5c9d75fa3679 + 1
 |link:userland/gcc/busy_loop.c[] `-O0`
 |`qemu --arch aarch64`
@@ -19734,6 +19735,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |1.1 * 10^11 (approx)
 |2000
 
+|
 |a18f28e263c91362519ef550150b5c9d75fa3679 + 1
 |link:userland/gcc/busy_loop.c[] `-O0`
 |`gem5 --arch aarch64`
@@ -19742,6 +19744,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |1.10018162 * 10^8
 |1
 
+|
 |a18f28e263c91362519ef550150b5c9d75fa3679 + 1
 |link:userland/gcc/busy_loop.c[] `-O0`
 |`gem5 --arch aarch64 --gem5-build-id debug`
@@ -19750,6 +19753,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |2.528728 * 10^6
 |0.08
 
+|
 |a18f28e263c91362519ef550150b5c9d75fa3679 + 1
 |link:userland/gcc/busy_loop.c[] `-O0`
 |`+gem5 --arch aarch64 -- --cpu-type MinorCPU --caches+`
@@ -19758,6 +19762,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |1.1018152 * 10^7
 |0.4
 
+|
 |a18f28e263c91362519ef550150b5c9d75fa3679 + 1
 |link:userland/gcc/busy_loop.c[] `-O0`
 |`+gem5 --arch aarch64 -- --cpu-type DerivO3CPU --caches+`
@@ -19766,6 +19771,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |1.1018128 * 10^7
 |0.2
 
+|
 |a18f28e263c91362519ef550150b5c9d75fa3679 + 1
 |link:userland/gcc/busy_loop.c[] `-O0`
 |`+gem5 --arch aarch64 --gem5-build-id MOESI_CMP_directory -- --cpu-type DerivO3CPU --caches --ruby+`
@@ -19774,6 +19780,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |1.1005150 * 10^7
 |0.2
 
+|
 |605448f07e6380634b1aa7e9732d111759f69fd
 |<<dhrystone>> `-O3`
 |`gem5 --arch aarch64`
@@ -19782,22 +19789,25 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |9.2034139 * 10^7
 |1.6
 
+|
 |5d233f2664a78789f9907d27e2a40e86cefad595
 |<<stream-benchmark>> `-O3`
-|`gem5 --arch aarch64 --userland-args 300000 2`
+|`./run --arch aarch64 --emulator gem5 --userland userland/gcc/busy_loop.c --userland-args 1000000 --trace ExecAll`
 |3 * 10^5 * 2
 |64
 |9.9674773 * 10^7
 |1.6
 
+|glibc C pre-main effects
 |ab6f7331406b22f8ab6e2df5f8b8e464fb35b611
-|glibc C pre-main link:userland/c/m5ops.c[] `-O0`
+|link:userland/c/m5ops.c[] `-O0`
 |`gem5 --arch aarch64 --userland-args e`
 |1
 |2
 |1.26479 * 10^5
 |0.05
 
+|
 |ab6f7331406b22f8ab6e2df5f8b8e464fb35b611
 |glibc C pre-main link:userland/c/m5ops.c[] `-O0`
 |`gem5 --arch aarch64 --userland-args e --gem5-build-type debug`
@@ -19806,6 +19816,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |1.26479 * 10^5
 |0.05
 
+|
 |ab6f7331406b22f8ab6e2df5f8b8e464fb35b611
 |glibc C++ pre-main link:userland/cpp/m5ops.cpp[] `-O0`
 |`gem5 --arch aarch64 --userland-args e`
@@ -19814,6 +19825,7 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |2.385012 * 10^6
 |1
 
+|
 |ab6f7331406b22f8ab6e2df5f8b8e464fb35b611
 |glibc C++ pre-main link:userland/cpp/m5ops.cpp[] `-O0`
 |`gem5 --arch aarch64 --userland-args e --gem5-build-type debug`
@@ -19822,21 +19834,41 @@ Summary of manually collected results on <<p51>> at LKMC a18f28e263c91362519ef55
 |2.385012 * 10^6
 |0.1
 
+|gem5 optimized build immediate exit on first instruction to benchmark the simulator startup time
 |ab6f7331406b22f8ab6e2df5f8b8e464fb35b611
 |immediate exit link:userland/arch/aarch64/freestanding/linux/gem5_exit.S[] `-O0`
 |`gem5 --arch aarch64`
 |1
 |1
-|
+|1
 |
 
+|same as above but debug build
 |ab6f7331406b22f8ab6e2df5f8b8e464fb35b611
-|immediate exit link:userland/arch/aarch64/freestanding/linux/gem5_exit.S[] `-O0`
+|link:userland/arch/aarch64/freestanding/linux/gem5_exit.S[] `-O0`
 |`gem5 --arch aarch64 --gem5-build-type debug`
 |1
 |1
+|1
 |
-|
+
+|Check the effect of an ExecAll log (log every instruction) on execution time, compare to analogous run without it. `trace.txt` size: 3.5GB. 5x slowdown observed with output to a hard disk.
+|d29a07ddad499f273cc90dd66e40f8474b5dfc40
+|link:userland/gcc/busy_loop.c[] `-O0`
+|`./run --arch aarch64 --emulator gem5 --userland userland/gcc/busy_loop.c --userland-args 1000000 --gem5-worktree master --trace ExecAll`
+|10^6
+|2.4106774 * 10^7
+|136
+|0.2
+
+|Same as above but with run command manually hacked to output to a ramfs. Slightly faster, but the bulk was still just in log format operations!
+|d29a07ddad499f273cc90dd66e40f8474b5dfc40
+|link:userland/gcc/busy_loop.c[] `-O0`
+|`./run --arch aarch64 --emulator gem5 --userland userland/gcc/busy_loop.c --userland-args 1000000 --gem5-worktree master --trace ExecAll`
+|10^6
+|2.4106774 * 10^7
+|107
+|0.2
 
 |===
 
@@ -20108,14 +20140,9 @@ Tested at: d4b3e064adeeace3c3e7d106801f95c14637c12f + 1.
 
 ==== P51
 
-Lenovo ThinkPad https://www3.lenovo.com/gb/en/laptops/thinkpad/p-series/P51/p/22TP2WPWP51[P51 laptop]:
+Lenovo ThinkPad https://www3.lenovo.com/gb/en/laptops/thinkpad/p-series/P51/p/22TP2WPWP51[P51 laptop] with the Latest stable Ubuntu.
 
-* 2500 USD in 2018 (high end)
-* Intel Core i7-7820HQ Processor (8MB Cache, up to 3.90GHz) (4 cores 8 threads)
-* 32GB(16+16) DDR4 2400MHz SODIMM
-* 512GB SSD PCIe TLC OPAL2
-* NVIDIA Quadro M1200 Mobile, latest Ubuntu supported proprietary driver
-* Latest Ubuntu
+Full specs and benchmark scores will be maintained at the latest version of: https://github.com/cirosantilli/notes/blob/0c038b0e430d0017f12d028c6a0e7c0b99ec957f/my-hardware.adoc#thinkpad-p51
 
 === Benchmark Internets