diff --git a/README.md b/README.md
index 0da145d0fe29a..8e3f67e91d869 100644
--- a/README.md
+++ b/README.md
@@ -1,56 +1,263 @@
-NetBSD
-======
+NetBSD-perf
+===========
 
-NetBSD is a free, fast, secure, and highly portable Unix-like Open
-Source operating system.  It is available for a [wide range of
-platforms](https://wiki.NetBSD.org/ports/), from large-scale servers
-and powerful desktop systems to handheld and embedded devices.
+This is my attempt at replicating iMil results that were reported on https://mail-index.netbsd.org/tech-kern/2024/01/23/msg029450.html and https://old.reddit.com/r/BSD/comments/197vfmq by using the perf branch he published on https://github.com/NetBSDfr/NetBSD-src
 
-Building
---------
+Currently, I'm still about 5x slower as I boot in 200 ms, but this is a good beginning:
 
-You can cross-build NetBSD from most UNIX-like operating systems.
-To build for amd64 (x86_64), in the src directory:
+```
+# sh test-netbsd.sh
+[   1.0000000] cpu_rng: rdrand/rdseed
+[   1.0000000] entropy: ready
+[   1.0000000] NetBSD 10.99.10 (MICROVM)       Notice: this software is protected by copyright
+[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+[   1.0000000]     2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
+[   1.0000000]     2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
+[   1.0000000]     2024
+[   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
+[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
+[   1.0000000]     The Regents of the University of California.  All rights reserved.
 
-    ./build.sh -U -u -j4 -m amd64 -O ~/obj release
+[   1.0000000] NetBSD 10.99.10 (MICROVM) #8: Wed Jan 31 09:01:58 CST 2024
+[   1.0000000]  charlotte@x1ng2:/home/charlotte/obj/sys/arch/amd64/compile/MICROVM
+[   1.0000000] total memory = 127 MB
+[   1.0000000] avail memory = 77184 KB
+[   1.0000000] timecounter: Timecounters tick every 10.000 msec
+[   1.0000000] timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
+[   1.0000030] Hypervisor: KVM
+[   1.0000030] VMM: Generic PVH
+[   1.0000030] mainbus0 (root)
+[   1.0000030] mainbus0: Intel MP Specification (Version 1.4) (QBOOT    000000000000)
+[   1.0000030] cpu0 at mainbus0 apid 0
+[   1.0000030] cpu0: Use lfence to serialize rdtsc
+[   1.0000030] got tsc from vmware compatible cpuid
+[   1.0000030] cpu0: TSC freq CPUID 2496000000 Hz
+[   1.0000030] cpu0: 12th Gen Intel(R) Core(TM) i7-1270P, id 0x906a2
+[   1.0000030] cpu0: node 0, package 0, core 0, smt 0
+[   1.0000030] cpu1 at mainbus0 apid 1
+[   1.0000030] cpu1: 12th Gen Intel(R) Core(TM) i7-1270P, id 0x906a2
+[   1.0000030] cpu1: node 0, package 0, core 1, smt 0
+[   1.0000030] mpbios: bus 0 is type ISA
+[   1.0000030] ioapic0 at mainbus0 apid 3: pa 0xfec00000, version 0x20, 24 pins
+[   1.0000030] isa0 at mainbus0
+[   1.0000030] com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, 16-byte FIFO
+[   1.0000030] com0: console
+[   1.0000030] allocated pic ioapic0 type edge pin 4 level 8 to cpu0 slot 0 idt entry 129
+[   1.0000030] pv0 at mainbus0
+[   1.0000030] virtio0 at pv0
+[   1.0000030] kernel parameters: root=ld0c rw console=com -z -v virtio_mmio.device=512@0xfeb00e00:12 virtio_mmio.device=512@0xfeb00c00:11
+[   1.0000030] viommio: 512@0xfeb00e00:12
+[   1.0000030] virtio0: VirtIO-MMIO-v2
+[   1.0000030] virtio0: entropy device (id 4, rev. 0x01)
+[   1.0000030] viornd0 at virtio0: features: 0x110000000<V1,INDIRECT_DESC>
+[   1.0000030] virtio0: allocated 32768 byte for virtqueue 0 for Entropy request, size 1024
+[   1.0000030] allocated pic ioapic0 type level pin 12 level 6 to cpu0 slot 1 idt entry 96
+[   1.0000030] virtio0: interrupting on -1
+[   1.0000030] virtio1 at pv0
+[   1.0000030] viommio: 512@0xfeb00c00:11
+[   1.0000030] virtio1: VirtIO-MMIO-v2
+[   1.0000030] virtio1: block device (id 2, rev. 0x01)
+[   1.0000030] ld0 at virtio1: features: 0x110000a54<V1,INDIRECT_DESC,CONFIG_WCE,FLUSH,BLK_SIZE,GEOMETRY,SEG_MAX>
+[   1.0000030] virtio1: allocated 4227072 byte for virtqueue 0 for I/O request, size 1024
+[   1.0000030] virtio1: using 4194304 byte (262144 entries) indirect descriptors
+[   1.0000030] allocated pic ioapic0 type level pin 11 level 6 to cpu0 slot 2 idt entry 97
+[   1.0000030] virtio1: interrupting on -1
+[   1.0000030] ld0: 512 MB, 1040 cyl, 16 head, 63 sec, 512 bytes/sect x 1048576 sectors
+[   1.0000030] pvclock0 at pv0
+[   1.0000030] timecounter: Timecounter "pvclock0" frequency 1000000000 Hz quality 1500
+[   1.0001371] timecounter: Timecounter "lapic" frequency 999983000 Hz quality -100
+[   1.0001371] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
+[   1.0001371] timecounter: Timecounter "TSC" frequency 2496000000 Hz quality 3000
+[   1.0575299] boot device: ld0
+[   1.0575299] root on ld0c dumps on ld0b
+[   1.0575299] root file system type: ffs
+[   1.0575299] kern.module.path=/stand/amd64/10.99.10/modules
+[   1.0611265] boot: 198ms (entry tsc: 251543752)
+[   1.0611265] exec /sbin/init: error 8
+[   1.0611265] init: trying /sbin/oinit
+bslinit v7 starting on NetBSD, will handle 12 signals, reaping zombies every 5 s
+        arg 0: oinit
+oinit: Failed to mount procfs on /proc: No such device
+oinit: Failed to mount kernfs on /kern: Invalid argument
+```
 
-Additional build information available in the [BUILDING](BUILDING) file.
+For reference, using the exact same filesystem but with the original kernel:
 
-Binaries
---------
+```
+[   1.0000000] cpu_rng: rdrand/rdseed
+[   1.0000000] entropy: ready
+[   1.0000000] NetBSD 10.99.10 (MICROVM)       Notice: this software is protected by copyright
+[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+[   1.0000000]     2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
+[   1.0000000]     2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
+[   1.0000000]     2024
+[   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
+[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
+[   1.0000000]     The Regents of the University of California.  All rights reserved.
 
-- [Daily builds](https://nycdn.NetBSD.org/pub/NetBSD-daily/HEAD/latest/)
-- [Releases](https://cdn.NetBSD.org/pub/NetBSD/)
+[   1.0000000] NetBSD 10.99.10 (MICROVM) #1891: Tue Jan 23 06:43:58 CET 2024
+[   1.0000000]  imil@tatooine:/home/imil/src/github.com/NetBSD-src/sys/arch/amd64/compile/obj/MICROVM
+[   1.0000000] total memory = 127 MB
+[   1.0000000] avail memory = 77184 KB
+[   1.0000000] timecounter: Timecounters tick every 10.000 msec
+[   1.0000000] timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
+[   1.0000030] Hypervisor: KVM
+[   1.0000030] VMM: Generic PVH
+[   1.0000030] mainbus0 (root)
+[   1.0000030] mainbus0: Intel MP Specification (Version 1.4) (QBOOT    000000000000)
+[   1.0000030] cpu0 at mainbus0 apid 0
+[   1.0000030] cpu0: Use lfence to serialize rdtsc
+[   1.0000030] got tsc from vmware compatible cpuid
+[   1.0000030] cpu0: TSC freq CPUID 2496000000 Hz
+[   1.0000030] cpu0: 12th Gen Intel(R) Core(TM) i7-1270P, id 0x906a2
+[   1.0000030] cpu0: node 0, package 0, core 0, smt 0
+[   1.0000030] mpbios: bus 0 is type ISA
+[   1.0000030] ioapic0 at mainbus0 apid 2: pa 0xfec00000, version 0x20, 24 pins
+[   1.0000030] isa0 at mainbus0
+[   1.0000030] com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, 16-byte FIFO
+[   1.0000030] com0: console
+[   1.0000030] allocated pic ioapic0 type edge pin 4 level 8 to cpu0 slot 0 idt entry 129
+[   1.0000030] pv0 at mainbus0
+[   1.0000030] virtio0 at pv0
+[   1.0000030] kernel parameters: root=ld0c console=com rw -z -v virtio_mmio.device=512@0xfeb00e00:12
+[   1.0000030] viommio: 512@0xfeb00e00:12
+[   1.0000030] virtio0: VirtIO-MMIO-v2
+[   1.0000030] virtio0: block device (id 2, rev. 0x01)
+[   1.0000030] ld0 at virtio0: features: 0x110000a54<V1,INDIRECT_DESC,CONFIG_WCE,FLUSH,BLK_SIZE,GEOMETRY,SEG_MAX>
+[   1.0000030] virtio0: allocated 4227072 byte for virtqueue 0 for I/O request, size 1024
+[   1.0000030] virtio0: using 4194304 byte (262144 entries) indirect descriptors
+[   1.0000030] allocated pic ioapic0 type level pin 12 level 6 to cpu0 slot 1 idt entry 96
+[   1.0000030] virtio0: interrupting on -1
+[   1.0000030] ld0: 512 MB, 1040 cyl, 16 head, 63 sec, 512 bytes/sect x 1048576 sectors
+[   1.0000030] pvclock0 at pv0
+[   1.0000030] timecounter: Timecounter "pvclock0" frequency 1000000000 Hz quality 1500
+[   1.0070044] allocated pic ioapic0 type level pin 2 level 7 to cpu0 slot 2 idt entry 112
+[   1.0232075] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
+[   1.0232075] timecounter: Timecounter "TSC" frequency 2496000000 Hz quality 3000
+[   1.0244222] boot device: ld0
+[   1.0244222] root on ld0c dumps on ld0b
+[   1.0244222] root file system type: ffs
+[   1.0244222] kern.module.path=/stand/amd64/10.99.10/modules
+[   1.0285561] boot: 72ms (entry tsc: 168962022)
+[   1.0294073] exec /sbin/init: error 8
+[   1.0294073] init: trying /sbin/oinit
+bslinit v7 starting on NetBSD, will handle 12 signals, reaping zombies every 30 s
+        arg 0: oinit
+oinit: mount /proc failed: No such device
+```
 
-Testing
--------
+Note also that the MMIO in qemu append doesn't seem to survive a reboot:
 
-On a running NetBSD system:
+```
+# init: can't add utmpx record for `system boot': No such file or directory
+init: can't add utmpx record for `system down': No such file or directory
+qemu-system-x86_64: terminating on signal 2
+[   1.0000000] cpu_rng: rdrand/rdseed
+[   1.0000000] entropy: ready
+[   1.0000000] NetBSD 10.99.10 (MICROVM)       Notice: this software is protected by copyright
+[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+[   1.0000000]     2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
+[   1.0000000]     2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
+[   1.0000000]     2024
+[   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
+[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
+[   1.0000000]     The Regents of the University of California.  All rights reserved.
+(...)
+[   1.0155438] root on ld0c dumps on ld0b
+[   1.0155438] vfs_mountroot: can't open root device
+[   1.0155438] cannot mount root, error = 6
+[   1.0155438] root device (default ld0c): qemu-system-x86_64: terminating on signal 2
+```
 
-    cd /usr/tests; atf-run | atf-report
+Also the performance is not matching yet:
 
-Troubleshooting
----------------
+```
+# sysctl -b debug.tslog > /tmp/tslog
+0x0 275799932 ENTER main
+0x2 295914148 THREAD idle/0
+0x3 295927199 THREAD softnet/0
+0x4 295946662 THREAD softbio/0
+0x5 295962333 THREAD softclk/0
+0x6 296029811 THREAD softser/0
+0x7 296101498 THREAD xcall/0
+0x8 296160256 THREAD modunload
+0x9 296242469 THREAD pooldisp
+0xa 297478103 THREAD iflnkst
+0xb 297483183 THREAD ifwdog
+0xc 297495935 THREAD sopendfree
+0xd 297511476 THREAD pmfevent
+0xe 297516835 THREAD pmfsuspend
+0x0 300470812 ENTER config_attach_internal mainbus
+0x0 302535470 ENTER config_attach_internal cpu
+0x0 334981541 EXIT config_attach_internal
+0x0 334995085 ENTER config_attach_internal cpu
+0xf 335760098 THREAD idle/1
+0x10 335798245 THREAD softnet/1
+0x11 335825899 THREAD softbio/1
+0x12 335850895 THREAD softclk/1
+0x13 335875037 THREAD softser/1
+0x14 335928985 THREAD xcall/1
+0x0 390242684 EXIT config_attach_internal
+0x0 391082852 ENTER config_attach_internal ioapic
+0x0 569050116 EXIT config_attach_internal
+0x0 569084610 ENTER config_attach_internal isa
+0x0 569827191 ENTER config_attach_internal com
+0x0 589518701 EXIT config_attach_internal
+0x0 589525847 EXIT config_attach_internal
+0x0 589529639 ENTER config_attach_internal pv
+0x0 590079490 ENTER config_attach_internal virtio
+0x0 595773519 ENTER config_attach_internal viornd
+0x0 683067128 EXIT config_attach_internal
+0x0 683078608 ENTER config_attach_internal virtio
+0x0 696013228 ENTER config_attach_internal ld
+0x0 828659203 EXIT config_attach_internal
+0x0 828662014 EXIT config_attach_internal
+0x0 828663123 EXIT config_attach_internal
+0x0 828673724 ENTER config_attach_internal pvclock
+0x0 831876908 EXIT config_attach_internal
+0x0 831878663 EXIT config_attach_internal
+0x0 831884395 EXIT config_attach_internal
+0x15 833672855 THREAD entbutler
+0x16 964636813 THREAD configintr
+0x19 964651639 THREAD configintr
+0x18 965754770 THREAD configintr
+0x19 965772930 THREAD configintr
+0x6f 965776243 THREAD configintr
+0x6d 965782151 THREAD configintr
+0x6a 965785487 THREAD configintr
+0x61 965789332 THREAD configintr
+0x1e 965860007 THREAD vmem_rehash
+0x1f 965973444 THREAD rt_timer
+0x36 965988880 THREAD icmp_wqinput/0
+0x60 966064940 THREAD icmp_wqinput/1
+0x61 966403212 THREAD nd6_timer
+0x62 966673756 THREAD icmp6_wqinput/0
+0x63 966678725 THREAD icmp6_wqinput/1
+0x64 966715553 THREAD unpgc
+0x65 966741324 THREAD rt_free
+0x6b 976822639 THREAD configroot
+0x67 976832285 THREAD configroot
+0x68 977580970 THREAD pgdaemon
+0x69 977592989 THREAD ioflush
+0x6a 977695961 THREAD pooldrain
+0x0 977726594 EXIT main
+```
 
-- Send bugs and patches [via web form](https://www.NetBSD.org/cgi-bin/sendpr.cgi?gndb=netbsd).
-- Subscribe to the [mailing lists](https://www.NetBSD.org/mailinglists/).
-  The [netbsd-users](https://www.NetBSD.org/mailinglists/#netbsd-users) list is a good choice for many problems; watch [current-users](https://www.NetBSD.org/mailinglists/#current-users) if you follow the bleeding edge of NetBSD-current.
-- Join the community IRC channel [#netbsd @ libera.chat](https://web.libera.chat/#netbsd).
+Building
+--------
 
-Latest sources
---------------
+The all-in-one compile.sh will build a kernel for you in ~/obj/sys/arch/amd64/compile/MICROVM/netbsd
 
-To fetch the main CVS repository:
+    sh ./compile.sh
 
-    cvs -d anoncvs@anoncvs.NetBSD.org:/cvsroot checkout -P src
+Binaries
+--------
 
-To work in the Git mirror, which is updated every few hours from CVS:
+When it'll be ready, you'll see the releases on the right handside
 
-    git clone https://github.com/NetBSD/src.git
+TODO
+----
 
-Additional Links
-----------------
+Adding flamecharts to understand why it's so slow
 
-- [The NetBSD Guide](https://www.NetBSD.org/docs/guide/en/)
-- [NetBSD manual pages](https://man.NetBSD.org/)
-- [NetBSD Cross-Reference](https://nxr.NetBSD.org/)
+Adding a basic rootfs with simple tools such as bslinit, the tslog script to create flamecharts, and a shell
diff --git a/compile.sh b/compile.sh
new file mode 100755
index 0000000000000..96b338c7bbbbc
--- /dev/null
+++ b/compile.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+# Replication of iMil result reported on https://mail-index.netbsd.org/tech-kern/2024/01/23/msg029450.html
+m="amd64"
+a="x86_64"
+CPUS=4
+PATHSKC="sys/arch/${m}/conf/"
+TOOLCHAIN="${HOME}/obj"
+
+[ -z ${1} ] \
+ && printf "# Defaulting to MICROVM\n" \
+ && KERNELCONFIG="MICROVM" \
+ || KERNELCONFIG="${1}"
+
+[ ! -f "${PATHSKC}/${1}" ] \
+ && echo "Missing ${KERNELCONFIG} in ${PATHSKC}" \
+ && exit 1
+
+[ -f "${PATHSKC}/${1}" ] \
+ && printf "# Using kernel config ${1}" \
+ && KERNELCONFIG="${1}" \
+ && stat -c "%y %A %n size: %s" ${PATHSKC}/${KERNELCONFIG} \
+ || echo "Missing ${KERNELCONFIG} in ${PATHSKC}"
+
+# Get the sources
+#git clone https://github.com/NetBSDfr/NetBSD-src
+git clone https://github.com/csdvrx/NetBSD-fr-src
+
+# Show the branches available
+git branch -a
+
+# Change to result-replication, based on the perf branch
+git branch| grep result-replication2  || git checkout result-replication2 || exit 2
+
+#cf https://www.netbsd.org/docs/guide/en/chap-build.html#chap-boot-cross-compiling-kernel
+echo "# Building the cross compilation toolchain into ${TOOLCHAIN}":
+
+stat -c "%y %A %n size: %s" ${TOOLCHAIN}/tooldir*x86_64/bin/nbmake \
+ || sh ./build.sh -U -O ${TOOLCHAIN} -j ${CPUS} -m ${m} -a ${a} tools \
+ || exit 3
+
+echo "# Using the kernel configuration ${KERNELCONFIG}":
+stat -c "%y %A %n size: %s" sys/arch/amd64/conf/${KERNELCONFIG} \
+ || exit 4
+
+#echo "# Checking pvclock is disabled as it requires the missing <dev/pv/pvreg.h>"
+#grep -v ^pvclock sys/arch/amd64/conf/${KERNELCONFIG} \
+# || exit 5
+
+echo "# Refreshing the kernel build with -u" \
+ && sh ./build.sh -u -U -O ${TOOLCHAIN} -j ${CPUS} -m ${m}  kernel=${KERNELCONFIG} \
+ && stat -c "%y %A %n size: %s" ${TOOLCHAIN}/sys/arch/${m}/compile/${KERNELCONFIG}/netbsd \
+ || exit 6
+
+## Alternatives:
+# Use nbconfig and nbmake directly like sys/arch/amd64/conf/kern-compile.sh:
+#NBCONFIG=$( ls ~/obj/tooldir*${a}/bin/nbconfig | tail -n1 )
+#NBMAKE=$( ls ~/obj/tooldir*${a}/bin/nbmake-${m} | tail -n1 )
+#printf "\tnbconfig:\t${NBCONFIG}\n\tnbmake-xxx:\t${NBMAKE}\n\n"
+#${NBCONFIG} ${KERNELCONFIG} | grep "Build directory is" \
+# && cd ${TOOLCHAIN}/sys/arch/${m}/compile \
+# && ${NBMAKE} depend
+
+# Don't just update the kernel: remove the '-u' that's for update only
+
+# Compile from scratch the release and the kernel
+#sh ./build.sh -U -O ${TOOLCHAIN} -j ${CPUS} -m amd64 -a x86_64 release kernel=${KERNELCONFIG}
+
+# TODO: add qemu scripts, which should have console=com etc
+# TODO: add a basic init_args parsing arguments like sys/arch/x86/x86/x86_autoconf.c
diff --git a/sys/arch/amd64/conf/MICROVM b/sys/arch/amd64/conf/MICROVM
index bc84c3ed6cfc8..38e98de9756d8 100644
--- a/sys/arch/amd64/conf/MICROVM
+++ b/sys/arch/amd64/conf/MICROVM
@@ -185,6 +185,7 @@ makeoptions	COPTS="-O2 -fno-omit-frame-pointer"
 file-system FFS
 file-system EXT2FS
 file-system KERNFS
+file-system PROCFS
 file-system MFS
 
 # File system options
diff --git a/sys/arch/x86/x86/cpu.c b/sys/arch/x86/x86/cpu.c
index 0271fb261965b..bd49033792ccd 100644
--- a/sys/arch/x86/x86/cpu.c
+++ b/sys/arch/x86/x86/cpu.c
@@ -74,7 +74,7 @@ __KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.209 2023/07/16 19:55:43 riastradh Exp $");
 #include "ioapic.h"
 #include "acpica.h"
 #include "hpet.h"
-#include "pvclock.h"
+//#include "pvclock.h"
 #include <sys/param.h>
 #include <sys/proc.h>
 #include <sys/systm.h>
diff --git a/sys/arch/x86/x86/lapic.c b/sys/arch/x86/x86/lapic.c
index 7f8cc59a0980f..e5307f7382338 100644
--- a/sys/arch/x86/x86/lapic.c
+++ b/sys/arch/x86/x86/lapic.c
@@ -42,7 +42,7 @@ __KERNEL_RCSID(0, "$NetBSD: lapic.c,v 1.89 2022/09/07 00:40:19 knakahara Exp $")
 #include "opt_multiprocessor.h"
 #include "opt_ntp.h"
 #include "opt_xen.h"
-#include "pvclock.h"
+//#include "pvclock.h"
 #include <sys/param.h>
 #include <sys/proc.h>
 #include <sys/systm.h>
diff --git a/sys/kern/kern_tslog.c b/sys/kern/kern_tslog.c
index 15819cf6188a9..e3e050342d8da 100644
--- a/sys/kern/kern_tslog.c
+++ b/sys/kern/kern_tslog.c
@@ -64,7 +64,7 @@
 #include <sys/systm.h>
 #include <sys/tslog.h>
 
-#include <machine/atomic.h>
+#include <sys/atomic.h>
 #include <machine/cpu.h>
 
 #ifndef TSLOGSIZE