bun faster event-loop?

gistfile1.txt

root@ubuntu-4gb-fsn1-1:~# node t.js && node t.js && node t.js
228.9K event loop iterations/sec (1,144,440 in 5.0s)
248.8K event loop iterations/sec (1,244,247 in 5.0s)
256.6K event loop iterations/sec (1,282,852 in 5.0s)
root@ubuntu-4gb-fsn1-1:~# bun t.js && bun t.js && bun t.js
114.3K event loop iterations/sec (571,724 in 5.0s)
122.5K event loop iterations/sec (612,894 in 5.0s)
96.3K event loop iterations/sec (481,396 in 5.0s)
root@ubuntu-4gb-fsn1-1:~# node -v
v24.13.1
root@ubuntu-4gb-fsn1-1:~# bun -v
1.3.9
root@ubuntu-4gb-fsn1-1:~# lscpu
Architecture:             x86_64
  CPU op-mode(s):         32-bit, 64-bit
  Address sizes:          40 bits physical, 48 bits virtual
  Byte Order:             Little Endian
CPU(s):                   2
  On-line CPU(s) list:    0,1
Vendor ID:                GenuineIntel
  BIOS Vendor ID:         QEMU
  Model name:             Intel Xeon Processor (Skylake, IBRS, no TSX)
    BIOS Model name:      NotSpecified  CPU @ 2.0GHz
    BIOS CPU family:      1
    CPU family:           6
    Model:                85
    Thread(s) per core:   1
    Core(s) per socket:   2
    Socket(s):            1
    Stepping:             4
    BogoMIPS:             4589.23
    Flags:                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx pdpe1gb rdtscp lm co
                          nstant_tsc rep_good nopl xtopology cpuid tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_dead
                          line_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault pti ssbd ibrs ibpb fsgsbase bmi1 avx2 smep bmi
                          2 erms invpcid avx512f avx512dq rdseed adx smap clwb avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves arat pku ospke md_cle
                          ar
Virtualization features:
  Hypervisor vendor:      KVM
  Virtualization type:    full
Caches (sum of all):
  L1d:                    64 KiB (2 instances)
  L1i:                    64 KiB (2 instances)
  L2:                     8 MiB (2 instances)
  L3:                     16 MiB (1 instance)
NUMA:
  NUMA node(s):           1
  NUMA node0 CPU(s):      0,1
Vulnerabilities:
  Gather data sampling:   Unknown: Dependent on hypervisor status
  Itlb multihit:          KVM: Mitigation: VMX unsupported
  L1tf:                   Mitigation; PTE Inversion
  Mds:                    Mitigation; Clear CPU buffers; SMT Host state unknown
  Meltdown:               Mitigation; PTI
  Mmio stale data:        Vulnerable: Clear CPU buffers attempted, no microcode; SMT Host state unknown
  Reg file data sampling: Not affected
  Retbleed:               Mitigation; IBRS
  Spec rstack overflow:   Not affected
  Spec store bypass:      Mitigation; Speculative Store Bypass disabled via prctl
  Spectre v1:             Mitigation; usercopy/swapgs barriers and __user pointer sanitization
  Spectre v2:             Mitigation; IBRS; IBPB conditional; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI SW loop, KVM SW loop
  Srbds:                  Not affected
  Tsx async abort:        Not affected