ci: don't allow deadlocks on riscv64

[mkroening]

Closes #1286.

[github-actions]

Benchmark Results

Details

Benchmark	Current: eec935a	Previous: fa5eb27	Performance Ratio
startup_benchmark Build Time	99.86 s	99.27 s	1.01 ❗
startup_benchmark File Size	0.86 MB	0.86 MB	1.00 ❗
Startup Time - 1 core	0.94 s (±0.03 s)	0.94 s (±0.03 s)	1.00
Startup Time - 2 cores	0.94 s (±0.03 s)	0.96 s (±0.03 s)	0.98
Startup Time - 4 cores	0.96 s (±0.03 s)	0.95 s (±0.03 s)	1.00
multithreaded_benchmark Build Time	101.52 s	97.05 s	1.05 ❗
multithreaded_benchmark File Size	0.97 MB	0.97 MB	1
Multithreaded Pi Efficiency - 2 Threads	89.45 % (±6.89 %)	89.13 % (±5.65 %)	1.00
Multithreaded Pi Efficiency - 4 Threads	43.92 % (±2.75 %)	44.48 % (±3.21 %)	0.99
Multithreaded Pi Efficiency - 8 Threads	25.63 % (±1.54 %)	25.33 % (±2.02 %)	1.01
micro_benchmarks Build Time	102.91 s	95.04 s	1.08 ❗
micro_benchmarks File Size	0.97 MB	0.97 MB	1.00 ❗
Scheduling time - 1 thread	69.14 ticks (±4.74 ticks)	67.09 ticks (±4.60 ticks)	1.03
Scheduling time - 2 threads	40.17 ticks (±6.78 ticks)	39.54 ticks (±5.99 ticks)	1.02
Micro - Time for syscall (getpid)	3.23 ticks (±0.40 ticks)	3.14 ticks (±0.45 ticks)	1.03
Memcpy speed - (built_in) block size 4096	66784.66 MByte/s (±47568.42 MByte/s)	67948.42 MByte/s (±48263.78 MByte/s)	0.98
Memcpy speed - (built_in) block size 1048576	29551.59 MByte/s (±24261.23 MByte/s)	29498.32 MByte/s (±24198.75 MByte/s)	1.00
Memcpy speed - (built_in) block size 16777216	25146.98 MByte/s (±21126.75 MByte/s)	28350.96 MByte/s (±23556.90 MByte/s)	0.89
Memset speed - (built_in) block size 4096	67635.59 MByte/s (±48152.10 MByte/s)	68704.29 MByte/s (±48815.62 MByte/s)	0.98
Memset speed - (built_in) block size 1048576	30298.46 MByte/s (±24677.92 MByte/s)	30260.15 MByte/s (±24627.67 MByte/s)	1.00
Memset speed - (built_in) block size 16777216	25869.31 MByte/s (±21568.69 MByte/s)	29075.19 MByte/s (±23953.93 MByte/s)	0.89
Memcpy speed - (rust) block size 4096	62432.22 MByte/s (±46365.45 MByte/s)	61101.82 MByte/s (±44988.19 MByte/s)	1.02
Memcpy speed - (rust) block size 1048576	29565.09 MByte/s (±24358.96 MByte/s)	29780.52 MByte/s (±24322.04 MByte/s)	0.99
Memcpy speed - (rust) block size 16777216	24811.26 MByte/s (±20823.35 MByte/s)	28324.62 MByte/s (±23558.47 MByte/s)	0.88
Memset speed - (rust) block size 4096	63584.73 MByte/s (±47086.34 MByte/s)	62242.25 MByte/s (±45764.71 MByte/s)	1.02
Memset speed - (rust) block size 1048576	30343.19 MByte/s (±24797.82 MByte/s)	30519.71 MByte/s (±24742.15 MByte/s)	0.99
Memset speed - (rust) block size 16777216	25569.59 MByte/s (±21310.39 MByte/s)	29081.19 MByte/s (±23989.42 MByte/s)	0.88
alloc_benchmarks Build Time	93.55 s	93.49 s	1.00 ❗
alloc_benchmarks File Size	0.93 MB	0.93 MB	1.00 ❗
Allocations - Allocation success	100.00 %	100.00 %	1
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	100.00 %	100.00 %	1
Allocations - Average Allocation time	8587.92 Ticks (±166.35 Ticks)	7371.20 Ticks (±104.13 Ticks)	1.17 ❗
Allocations - Average Allocation time (no fail)	8587.92 Ticks (±166.35 Ticks)	7371.20 Ticks (±104.13 Ticks)	1.17 ❗
Allocations - Average Deallocation time	922.34 Ticks (±312.21 Ticks)	893.11 Ticks (±318.14 Ticks)	1.03
mutex_benchmark Build Time	93.07 s	94.19 s	0.99 ❗
mutex_benchmark File Size	0.97 MB	0.97 MB	1.00 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	12.60 ns (±0.66 ns)	12.70 ns (±0.61 ns)	0.99
Mutex Stress Test Average Time per Iteration - 2 Threads	13.06 ns (±0.73 ns)	12.96 ns (±0.92 ns)	1.01

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