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Merge pull request #665 from fidergo-stephane-gourichon/more_precise_log 

More precise memory performance test.
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enjoy-digital 2020-10-07 12:38:44 +02:00 committed by GitHub
parent 83b4447f0e f71275a3f1
commit 5e2a4efac6
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 7 deletions
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18
litex/soc/software/libbase/memtest.c
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@ -176,13 +176,13 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only)
{ {
volatile unsigned long *array = (unsigned long *)addr; volatile unsigned long *array = (unsigned long *)addr;
int i; int i;
unsigned int start, end; uint32_t start, end;
unsigned long write_speed = 0; unsigned long write_speed = 0;
unsigned long read_speed; unsigned long read_speed;
__attribute__((unused)) unsigned long data; __attribute__((unused)) unsigned long data;
const unsigned int sz = sizeof(unsigned long); const unsigned int sz = sizeof(unsigned long);
printf("Memspeed at 0x%p...\n", addr); printf("Memspeed at 0x%p size 0x%x (%u read or write operations), read_only? %s...\n", addr, size, (size/sz), read_only?"true":"false");
/* init timer */ /* init timer */
timer0_en_write(0); timer0_en_write(0);
@ -199,9 +199,11 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only)
} }
timer0_update_value_write(1); timer0_update_value_write(1);
end = timer0_value_read(); end = timer0_value_read();
write_speed = (size*(CONFIG_CLOCK_FREQUENCY/1000000))/(start - end); uint64_t numerator = ((uint64_t)size)*((uint64_t)CONFIG_CLOCK_FREQUENCY);
uint64_t denominator = ((uint64_t)start - (uint64_t)end);
write_speed = numerator/denominator;
printf(" Write speed: %lub/s\n", write_speed);
} }
printf(" Write: %ldMiB/s\n", write_speed);
/* flush CPU and L2 caches */ /* flush CPU and L2 caches */
flush_cpu_dcache(); flush_cpu_dcache();
@ -218,8 +220,10 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only)
} }
timer0_update_value_write(1); timer0_update_value_write(1);
end = timer0_value_read(); end = timer0_value_read();
read_speed = (size*(CONFIG_CLOCK_FREQUENCY/1000000))/(start - end); uint64_t numerator = ((uint64_t)size)*((uint64_t)CONFIG_CLOCK_FREQUENCY);
printf(" Read: %ldMiB/s\n", read_speed); uint64_t denominator = ((uint64_t)start - (uint64_t)end);
read_speed = numerator/denominator;
printf(" Read speed: %lub/s\n", read_speed);
} }
int memtest(unsigned int *addr, unsigned long maxsize) int memtest(unsigned int *addr, unsigned long maxsize)
@ -229,7 +233,7 @@ int memtest(unsigned int *addr, unsigned long maxsize)
unsigned long addr_size = MEMTEST_ADDR_SIZE < maxsize ? MEMTEST_ADDR_SIZE : maxsize; unsigned long addr_size = MEMTEST_ADDR_SIZE < maxsize ? MEMTEST_ADDR_SIZE : maxsize;
unsigned long data_size = maxsize; unsigned long data_size = maxsize;
printf("Memtest at 0x%p...\n", addr); printf("Memtest at 0x%p size 0x%x...\n", addr, maxsize);
bus_errors = memtest_bus(addr, bus_size); bus_errors = memtest_bus(addr, bus_size);
addr_errors = memtest_addr(addr, addr_size, MEMTEST_ADDR_RANDOM); addr_errors = memtest_addr(addr, addr_size, MEMTEST_ADDR_RANDOM);