feat(xtask): kill servers externally

[mkroening]

This PR aims to fix the spurious

Error: Resource temporarily unavailable (os error 11)

in

cargo xtask ci rs --arch x86_64 --profile release --package mioudp --features hermit/udp,hermit/dhcpv4,hermit/virtio-net qemu --accel --sudo --devices virtio-net-pci

by avoiding early server shutdowns before the message is actually transmitted.

[github-actions]

Benchmark Results

Benchmark	Current: 0db72b0	Previous: 250f22e	Performance Ratio
startup_benchmark Build Time	125.31 s	124.48 s	1.01
startup_benchmark File Size	0.91 MB	0.91 MB	1.00
Startup Time - 1 core	0.95 s (±0.02 s)	0.93 s (±0.02 s)	1.01
Startup Time - 2 cores	0.93 s (±0.02 s)	0.93 s (±0.03 s)	1.00
Startup Time - 4 cores	0.95 s (±0.02 s)	0.95 s (±0.02 s)	1.00
multithreaded_benchmark Build Time	123.33 s	122.65 s	1.01
multithreaded_benchmark File Size	1.02 MB	1.02 MB	1.00
Multithreaded Pi Efficiency - 2 Threads	2.80 % (±13.45 %)	2.79 % (±13.37 %)	1.01
Multithreaded Pi Efficiency - 4 Threads	1.62 % (±7.80 %)	1.58 % (±7.57 %)	1.03
Multithreaded Pi Efficiency - 8 Threads	0.81 % (±3.87 %)	0.82 % (±3.93 %)	0.99
micro_benchmarks Build Time	140.63 s	145.61 s	0.97
micro_benchmarks File Size	1.02 MB	1.03 MB	1.00
Scheduling time - 1 thread	2.86 ticks (±13.75 ticks)	3.05 ticks (±14.65 ticks)	0.94
Scheduling time - 2 threads	1.54 ticks (±7.41 ticks)	1.56 ticks (±7.50 ticks)	0.99
Micro - Time for syscall (getpid)	0.17 ticks (±0.81 ticks)	0.18 ticks (±0.86 ticks)	0.94
Memcpy speed - (built_in) block size 4096	1516.99 MByte/s (±7281.55 MByte/s)	1313.03 MByte/s (±6302.52 MByte/s)	1.16
Memcpy speed - (built_in) block size 1048576	754.33 MByte/s (±3620.80 MByte/s)	692.52 MByte/s (±3324.10 MByte/s)	1.09
Memcpy speed - (built_in) block size 16777216	219.54 MByte/s (±1053.81 MByte/s)	211.07 MByte/s (±1013.12 MByte/s)	1.04
Memset speed - (built_in) block size 4096	1008.40 MByte/s (±4840.34 MByte/s)	1290.32 MByte/s (±6193.55 MByte/s)	0.78
Memset speed - (built_in) block size 1048576	987.51 MByte/s (±4740.04 MByte/s)	1331.78 MByte/s (±6392.54 MByte/s)	0.74
Memset speed - (built_in) block size 16777216	878.29 MByte/s (±4215.80 MByte/s)	866.63 MByte/s (±4159.85 MByte/s)	1.01
Memcpy speed - (rust) block size 4096	1176.47 MByte/s (±5647.06 MByte/s)	960.00 MByte/s (±4608.00 MByte/s)	1.23
Memcpy speed - (rust) block size 1048576	708.83 MByte/s (±3402.39 MByte/s)	562.78 MByte/s (±2701.33 MByte/s)	1.26
Memcpy speed - (rust) block size 16777216	222.26 MByte/s (±1066.87 MByte/s)	203.06 MByte/s (±974.70 MByte/s)	1.09
Memset speed - (rust) block size 4096	1395.35 MByte/s (±6697.67 MByte/s)	1500.00 MByte/s (±7200.00 MByte/s)	0.93
Memset speed - (rust) block size 1048576	995.54 MByte/s (±4778.62 MByte/s)	1289.16 MByte/s (±6187.96 MByte/s)	0.77
Memset speed - (rust) block size 16777216	922.54 MByte/s (±4428.19 MByte/s)	882.37 MByte/s (±4235.38 MByte/s)	1.05
alloc_benchmarks Build Time	137.70 s	141.09 s	0.98
alloc_benchmarks File Size	0.98 MB	0.98 MB	1.00
Allocations - Allocation success	2.00 % (±13.86 %)	2.00 % (±13.86 %)	1
Allocations - Deallocation success	1.39 % (±9.66 %)	1.40 % (±9.74 %)	0.99
Allocations - Pre-fail Allocations	2.00 % (±13.86 %)	2.00 % (±13.86 %)	1
Allocations - Average Allocation time	254.47 Ticks (±1763.42 Ticks)	245.11 Ticks (±1698.52 Ticks)	1.04
Allocations - Average Allocation time (no fail)	254.47 Ticks (±1763.42 Ticks)	245.11 Ticks (±1698.52 Ticks)	1.04
Allocations - Average Deallocation time	16.97 Ticks (±117.60 Ticks)	17.05 Ticks (±118.16 Ticks)	1.00
mutex_benchmark Build Time	139.63 s	142.06 s	0.98
mutex_benchmark File Size	1.03 MB	1.03 MB	1.00
Mutex Stress Test Average Time per Iteration - 1 Threads	0.28 ns (±1.94 ns)	0.34 ns (±2.36 ns)	0.82
Mutex Stress Test Average Time per Iteration - 2 Threads	0.32 ns (±2.22 ns)	0.36 ns (±2.49 ns)	0.89

This comment was automatically generated by workflow using github-action-benchmark.