docker build -t fs-bench .
docker run -it --rm -v $(pwd):/bench --privileged --shm-size=1024m fs-bench
tar -xvf test.tar.gz
mv test /dev/shm/
lo build binding stdfs
node copy.mjs
bun copy.mjs
lo copy.js
node copy time 6097 rate 1640 rate/core 1624 ns/iter 609792.81 rss 75505664 usr 50.67 sys 50.34 tot 101.01
node copy time 6026 rate 1660 rate/core 1673 ns/iter 602699.26 rss 88281088 usr 49.77 sys 49.44 tot 99.21
node copy time 6006 rate 1665 rate/core 1681 ns/iter 600606.78 rss 92729344 usr 50.61 sys 48.45 tot 99.06
node copy time 5974 rate 1674 rate/core 1698 ns/iter 597421.09 rss 92729344 usr 49.37 sys 49.21 tot 98.58
node copy time 5997 rate 1668 rate/core 1687 ns/iter 599711.02 rss 92729344 usr 49.52 sys 49.35 tot 98.87
bun copy time 1565 rate 6387 rate/core 6452 ns/iter 156574.20 rss 52985856 usr 27.46 sys 71.53 tot 98.99
bun copy time 1563 rate 6397 rate/core 6537 ns/iter 156338.47 rss 57573376 usr 27.50 sys 70.36 tot 97.86
bun copy time 1568 rate 6377 rate/core 6537 ns/iter 156833.97 rss 59146240 usr 27.41 sys 70.13 tot 97.54
bun copy time 1566 rate 6383 rate/core 6537 ns/iter 156684.41 rss 60981248 usr 28.72 sys 68.92 tot 97.64
bun copy time 1559 rate 6412 rate/core 6580 ns/iter 155978.66 rss 62554112 usr 27.56 sys 69.88 tot 97.44
lo copy time 3285 rate 4261 rate/core 4349 ns/iter 234698.34 rss 37617664 usr 28.60 sys 69.38 tot 97.98
lo copy time 3313 rate 4226 rate/core 4283 ns/iter 236680.10 rss 37785600 usr 31.68 sys 66.99 tot 98.67
lo copy time 3280 rate 4268 rate/core 4348 ns/iter 234304.33 rss 37785600 usr 29.57 sys 68.59 tot 98.16
lo copy time 3284 rate 4263 rate/core 4322 ns/iter 234578.30 rss 37785600 usr 28.62 sys 70.03 tot 98.65
lo copy time 3287 rate 4260 rate/core 4322 ns/iter 234795.41 rss 37785600 usr 25.85 sys 72.70 tot 98.55
## install lo
export LO_VERSION=0.0.17-pre
curl -L -o ${LO_VERSION}.tar.gz https://github.com/just-js/lo/archive/refs/tags/${LO_VERSION}.tar.gz
tar -xf ${LO_VERSION}.tar.gz
rm -fr ${HOME}/.lo
mv lo-${LO_VERSION} ${HOME}/.lo
rm ${LO_VERSION}.tar.gz
curl -L -o lo-mac-arm64.gz https://github.com/just-js/lo/releases/download/${LO_VERSION}/lo-mac-arm64.gz
gunzip lo-mac-arm64.gz
mv lo-mac-arm64 lo
chmod +x lo
./lo install
## install node
curl -L -o nodejs.tar.gz https://nodejs.org/dist/v22.3.0/node-v22.3.0-darwin-arm64.tar.gz
tar -xvf nodejs.tar.gz
rm -fr ${HOME}/.node
mv node-v22.3.0-darwin-arm64 ${HOME}/.node
rm nodejs.tar.gz
## install bun
curl -fsSL https://bun.sh/install | bashtar -xvf test.tar.gz
mv test /tmp/
lo build binding stdfs
node copy.mjs /tmp
bun copy.mjs /tmp
lo copy.js /tmp
node copy time 10974 rate 912 rate/core 908 ns/iter 1097489.06 rss 66387968 usr 11.09 sys 89.27 tot 100.36
node copy time 10930 rate 915 rate/core 915 ns/iter 1093075.22 rss 73072640 usr 10.68 sys 89.31 tot 99.99
node copy time 10976 rate 912 rate/core 912 ns/iter 1097619.90 rss 79642624 usr 10.60 sys 89.40 tot 100.00
node copy time 10955 rate 913 rate/core 914 ns/iter 1095505.79 rss 84066304 usr 10.55 sys 89.42 tot 99.97
node copy time 10984 rate 911 rate/core 912 ns/iter 1098417.55 rss 84328448 usr 10.54 sys 89.34 tot 99.88
bun copy time 4209 rate 2376 rate/core 2375 ns/iter 420933.32 rss 35995648 usr 3.97 sys 96.08 tot 100.05
bun copy time 4183 rate 2391 rate/core 2391 ns/iter 418335.67 rss 37486592 usr 3.95 sys 96.05 tot 100.00
bun copy time 4183 rate 2391 rate/core 2391 ns/iter 418316.72 rss 38682624 usr 3.94 sys 96.07 tot 100.01
bun copy time 4196 rate 2383 rate/core 2384 ns/iter 419694.62 rss 41779200 usr 3.94 sys 96.04 tot 99.98
bun copy time 4193 rate 2385 rate/core 2385 ns/iter 419367.71 rss 43073536 usr 3.93 sys 96.07 tot 100.00
lo copy time 8115 rate 1233 rate/core 1232 ns/iter 811529.78 rss 21086208 usr 5.17 sys 94.88 tot 100.05
lo copy time 8124 rate 1231 rate/core 1232 ns/iter 812458.74 rss 22085632 usr 5.16 sys 94.77 tot 99.93
lo copy time 8120 rate 1232 rate/core 1232 ns/iter 812038.94 rss 22134784 usr 5.17 sys 94.82 tot 99.99
lo copy time 8140 rate 1229 rate/core 1232 ns/iter 814053.51 rss 22134784 usr 5.03 sys 94.71 tot 99.74
lo copy time 8127 rate 1231 rate/core 1232 ns/iter 812744.94 rss 22134784 usr 5.04 sys 94.86 tot 99.90
hdiutil attach -nomount ram://$((2 * 1024 * 100))
diskutil eraseVolume HFS+ RAMDisk /dev/disk4
node copy.mjs /Volumes/RAMDisk
node copy time 8437 rate 1186 rate/core 1179 ns/iter 843790.24 rss 67207168 usr 14.78 sys 85.76 tot 100.54
node copy time 8386 rate 1193 rate/core 1191 ns/iter 838653.47 rss 79052800 usr 14.30 sys 85.85 tot 100.15
node copy time 8376 rate 1194 rate/core 1194 ns/iter 837622.42 rss 84033536 usr 14.21 sys 85.82 tot 100.03
node copy time 8376 rate 1194 rate/core 1194 ns/iter 837630.48 rss 85131264 usr 14.16 sys 85.85 tot 100.01
node copy time 8374 rate 1195 rate/core 1194 ns/iter 837472.38 rss 85164032 usr 14.22 sys 85.84 tot 100.06
bun copy time 3623 rate 2760 rate/core 2758 ns/iter 362332.32 rss 36339712 usr 4.66 sys 95.41 tot 100.07
bun copy time 3615 rate 2767 rate/core 2766 ns/iter 361512.46 rss 38174720 usr 4.63 sys 95.39 tot 100.02
bun copy time 3620 rate 2763 rate/core 2762 ns/iter 362030.82 rss 39682048 usr 4.63 sys 95.39 tot 100.02
bun copy time 3613 rate 2768 rate/core 2767 ns/iter 361334.65 rss 43089920 usr 4.64 sys 95.41 tot 100.05
bun copy time 3614 rate 2767 rate/core 2768 ns/iter 361412.51 rss 44728320 usr 4.63 sys 95.36 tot 99.99
lo copy time 6306 rate 1586 rate/core 1586 ns/iter 630659.74 rss 22020096 usr 6.65 sys 93.39 tot 100.04
lo copy time 6300 rate 1588 rate/core 1585 ns/iter 630060.69 rss 23019520 usr 6.66 sys 93.48 tot 100.14
lo copy time 6299 rate 1588 rate/core 1588 ns/iter 629904.61 rss 23117824 usr 6.66 sys 93.34 tot 100.00
lo copy time 6297 rate 1588 rate/core 1590 ns/iter 629730.54 rss 23117824 usr 6.51 sys 93.37 tot 99.88
lo copy time 6297 rate 1588 rate/core 1588 ns/iter 629766.06 rss 23117824 usr 6.66 sys 93.36 tot 100.02
strace -c node copy.mjs /dev/shm
node copy time 386 rate 260 rate/core 455 ns/iter 3860156.50 rss 59768832 usr 33.67 sys 23.31 tot 56.98
node copy time 356 rate 281 rate/core 556 ns/iter 3568029.40 rss 59858944 usr 25.22 sys 25.22 tot 50.44
node copy time 359 rate 279 rate/core 589 ns/iter 3595268.18 rss 62349312 usr 13.90 sys 33.37 tot 47.27
node copy time 358 rate 280 rate/core 589 ns/iter 3581175.96 rss 62574592 usr 19.54 sys 27.92 tot 47.46
node copy time 367 rate 273 rate/core 626 ns/iter 3670455.25 rss 62676992 usr 16.34 sys 27.24 tot 43.58
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ------------------
24.38 0.052063 2 22564 15 statx
20.97 0.044769 3 12054 openat
9.38 0.020033 4 4500 unlink
8.18 0.017456 1 12059 close
7.88 0.016833 3 4509 copy_file_range
6.55 0.013978 1 9018 getdents64
5.84 0.012479 1 9028 fstat
5.19 0.011088 2 4515 chmod
3.52 0.007507 1 4509 ftruncate
3.25 0.006930 1 4509 fchmod
3.10 0.006609 2 3021 newfstatat
0.59 0.001260 14 86 munmap
0.50 0.001066 2 502 1 access
0.32 0.000687 2 330 8 futex
0.06 0.000130 2 44 madvise
0.06 0.000128 2 55 read
0.04 0.000090 1 78 mmap
0.04 0.000085 5 16 epoll_pwait
0.03 0.000058 0 65 rt_sigaction
0.03 0.000057 0 64 getpid
0.02 0.000052 0 61 mprotect
0.02 0.000041 1 38 2 ioctl
0.02 0.000039 3 10 write
0.01 0.000030 0 41 rt_sigprocmask
0.01 0.000020 1 20 brk
0.01 0.000012 0 28 14 fcntl
0.01 0.000012 2 6 2 epoll_ctl
0.00 0.000002 0 3 readlink
0.00 0.000000 0 2 pread64
0.00 0.000000 0 1 execve
0.00 0.000000 0 1 uname
0.00 0.000000 0 1 getcwd
0.00 0.000000 0 6 mkdir
0.00 0.000000 0 1 sysinfo
0.00 0.000000 0 13 getuid
0.00 0.000000 0 13 getgid
0.00 0.000000 0 13 geteuid
0.00 0.000000 0 13 getegid
0.00 0.000000 0 13 capget
0.00 0.000000 0 1 arch_prctl
0.00 0.000000 0 3 gettid
0.00 0.000000 0 1 sched_getaffinity
0.00 0.000000 0 1 set_tid_address
0.00 0.000000 0 1 set_robust_list
0.00 0.000000 0 2 eventfd2
0.00 0.000000 0 2 epoll_create1
0.00 0.000000 0 2 dup3
0.00 0.000000 0 3 pipe2
0.00 0.000000 0 8 prlimit64
0.00 0.000000 0 2 getrandom
0.00 0.000000 0 1 rseq
0.00 0.000000 0 10 clone3
------ ----------- ----------- --------- --------- ------------------
100.00 0.213514 2 91847 42 total
strace -c bun copy.mjs /dev/shm
bun copy time 178 rate 562 rate/core 1001 ns/iter 1782081.08 rss 49283072 usr 16.83 sys 39.27 tot 56.10
bun copy time 174 rate 574 rate/core 1668 ns/iter 1742621.01 rss 49676288 usr 5.73 sys 28.69 tot 34.42
bun copy time 176 rate 569 rate/core 2001 ns/iter 1760281.48 rss 49541120 usr 5.68 sys 22.72 tot 28.40
bun copy time 175 rate 572 rate/core 1430 ns/iter 1750307.01 rss 49471488 usr 5.71 sys 34.27 tot 39.98
bun copy time 178 rate 562 rate/core 1668 ns/iter 1781023.48 rss 49471488 usr 5.61 sys 28.07 tot 33.68
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- -------------------
30.29 0.041484 3 12055 1 openat
16.51 0.022606 1 12052 close
9.43 0.012915 2 4509 copy_file_range
8.76 0.011998 1 6018 getdents64
8.03 0.011002 2 4509 ftruncate
6.49 0.008884 1 4509 fchmod
6.34 0.008684 2 3006 lstat
6.19 0.008483 1 4521 fstat
5.88 0.008056 2 3006 3006 mkdir
0.74 0.001012 6 160 1 futex
0.46 0.000635 70 9 sched_yield
0.18 0.000244 20 12 clone3
0.11 0.000147 3 47 read
0.10 0.000140 7 20 mprotect
0.09 0.000129 2 46 mmap
0.08 0.000110 3 32 rt_sigprocmask
0.07 0.000102 10 10 sched_setscheduler
0.07 0.000101 3 29 madvise
0.04 0.000061 6 10 write
0.02 0.000034 2 13 pread64
0.02 0.000023 1 19 1 ioctl
0.02 0.000023 1 12 sched_getaffinity
0.01 0.000014 3 4 munmap
0.01 0.000011 2 4 timerfd_create
0.01 0.000010 5 2 readlink
0.01 0.000010 3 3 epoll_ctl
0.01 0.000008 1 8 newfstatat
0.01 0.000008 8 1 epoll_create1
0.00 0.000006 0 13 rt_sigaction
0.00 0.000005 2 2 timerfd_settime
0.00 0.000005 5 1 eventfd2
0.00 0.000004 4 1 sysinfo
0.00 0.000002 2 1 lseek
0.00 0.000001 1 1 uname
0.00 0.000000 0 1 open
0.00 0.000000 0 3 brk
0.00 0.000000 0 2 2 access
0.00 0.000000 0 1 getpid
0.00 0.000000 0 1 execve
0.00 0.000000 0 1 getcwd
0.00 0.000000 0 1 sigaltstack
0.00 0.000000 0 1 arch_prctl
0.00 0.000000 0 2 gettid
0.00 0.000000 0 1 set_tid_address
0.00 0.000000 0 1 set_robust_list
0.00 0.000000 0 8 prlimit64
0.00 0.000000 0 2 getrandom
0.00 0.000000 0 1 rseq
0.00 0.000000 0 1 close_range
------ ----------- ----------- --------- --------- -------------------
100.00 0.136957 2 54672 3011 total
lo copy.js /dev/shm
lo copy time 210 rate 475 rate/core 1251 ns/iter 2106454.60 rss 28704768 usr 9.49 sys 28.48 tot 37.97
lo copy time 216 rate 462 rate/core 1112 ns/iter 2165969.02 rss 29097984 usr 9.23 sys 32.31 tot 41.54
lo copy time 225 rate 443 rate/core 1251 ns/iter 2257523.04 rss 29097984 usr 8.85 sys 26.57 tot 35.42
lo copy time 257 rate 389 rate/core 1001 ns/iter 2574635.62 rss 29097984 usr 7.76 sys 31.07 tot 38.83
lo copy time 226 rate 441 rate/core 1112 ns/iter 2267724.25 rss 29097984 usr 4.40 sys 35.27 tot 39.67
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ------------------
28.75 0.053179 2 18050 newfstatat
28.70 0.053095 4 12040 openat
13.21 0.024435 2 12039 close
11.07 0.020470 4 4509 sendfile
6.97 0.012892 2 6012 getdents64
5.66 0.010464 1 6012 fcntl
5.37 0.009938 2 4509 fchmod
0.12 0.000223 44 5 write
0.06 0.000111 2 46 mmap
0.03 0.000053 3 17 brk
0.02 0.000037 5 7 pread64
0.01 0.000022 0 30 mprotect
0.01 0.000022 2 8 futex
0.01 0.000016 2 6 times
0.01 0.000011 0 23 read
0.00 0.000007 1 6 munmap
0.00 0.000004 2 2 ioctl
0.00 0.000004 4 1 getcwd
0.00 0.000000 0 1 rt_sigaction
0.00 0.000000 0 5 rt_sigprocmask
0.00 0.000000 0 1 1 access
0.00 0.000000 0 3 madvise
0.00 0.000000 0 1 getpid
0.00 0.000000 0 1 execve
0.00 0.000000 0 1 uname
0.00 0.000000 0 1 arch_prctl
0.00 0.000000 0 1 sched_getaffinity
0.00 0.000000 0 1 set_tid_address
0.00 0.000000 0 1 set_robust_list
0.00 0.000000 0 2 prlimit64
0.00 0.000000 0 1 getrandom
0.00 0.000000 0 1 1 pkey_alloc
0.00 0.000000 0 1 rseq
0.00 0.000000 0 2 clone3
------ ----------- ----------- --------- --------- ------------------
100.00 0.184983 2 63346 2 total