Applied, thanks!
Damien Zammit, le sam. 22 juil. 2023 04:50:50 +0000, a ecrit:
> Booting to beginning of bootstrap with different number of cpus
> and checking the lock statistics where TIME is in milliseconds:
>
> Set MACH_LOCK_MON to 1 in configfrag.ac, then
>
> Configure options
> --enable-ncpus=8 --enable-kdb --enable-apic --disable-linux-groups
>
> -smp 1
>
> db{0}> show all slocks
>
> SUCCESS FAIL MASKED STACK TIME LOCK/CALLER
> 4208 0/0 4208/100 2/0 7890/1 0xc1098f54(c11847c8)
> 1 0/0 1/100 0/0 7890/7890 0x315(c11966e0)
> 30742 0/0 0/0 2106/0 160/0 0xf52a9e2c(f5a07958)
> 30742 0/0 0/0 0/0 140/0 0xf52a5e2c(f5a07b10)
> 149649 0/0 3372/2 1/0 120/0 0xc118a590(c118a9d4)
> 16428 0/0 0/0 1/0 90/0 0xf52a5dd0(f5a07ab8)
> 14345 0/0 0/0 18/0 80/0 0xf64afe2c(f64aa488)
> 1791 0/0 0/0 1/0 80/0 0xf52a3e70(f5e57f70)
>
> 17331 total locks, 0 empty buckets
> 2320150 0/0 455490/19 11570533/4 17860/0 0xc10a4580(c10a4580)
>
> -smp 2
>
> (could not wait until booted)
>
> db{0}> show all slocks
>
> SUCCESS FAIL MASKED STACK TIME LOCK/CALLER
> 47082 0/0 47082/100 0/0 413940/8 0xc1098f54(c11847c8)
> 2 0/0 2/100 0/0 413940/206970 0x6ede(c11966e0)
> 47139 0/0 0/0 2106/0 4670/0 0xc119edec(f5e409b0)
> 132895 3/0 3372/2 1/0 4580/0 0xc118a590(c118a9d4)
> 118313 0/0 2/0 0/0 3660/0 0xc1098ec4(c1189f80)
> 183233 1/0 1714/0 2/0 2290/0 0xc1098e54(c118aa8c)
> 14357 0/0 0/0 1878/0 1200/0 0xf52a4de0(f5e40a60)
> 14345 0/0 0/0 18/0 1200/0 0xf52a4dec(f528f488)
>
> 16910 total locks, 0 empty buckets
> 2220850 455/0 485391/21 11549793/5 879030/0
> 0xc10a4580(c10a4580)
> ---
> kern/lock_mon.c | 10 ++++------
> 1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/kern/lock_mon.c b/kern/lock_mon.c
> index b8216788..3ca4592c 100644
> --- a/kern/lock_mon.c
> +++ b/kern/lock_mon.c
> @@ -46,6 +46,7 @@
> #include <kern/thread.h>
> #include <kern/lock.h>
> #include <kern/printf.h>
> +#include <kern/mach_clock.h>
> #include <machine/ipl.h>
> #include <ddb/db_sym.h>
> #include <ddb/db_output.h>
> @@ -56,13 +57,10 @@ def_simple_lock_data(, kdb_lock)
> def_simple_lock_data(, printf_lock)
>
> #if NCPUS > 1 && MACH_LOCK_MON
> -
> -#if TIME_STAMP
> -extern time_stamp_t time_stamp;
> -#else /* TIME_STAMP */
> +#define TIME_STAMP 1
> typedef unsigned int time_stamp_t;
> -#define time_stamp 0
> -#endif /* TIME_STAMP */
> +/* in milliseconds */
> +#define time_stamp (elapsed_ticks * 1000 / hz)
>
> #define LOCK_INFO_MAX (1024*32)
> #define LOCK_INFO_HASH_COUNT 1024
> --
> 2.40.1
>
>
>
--
Samuel
---
Pour une évaluation indépendante, transparente et rigoureuse !
Je soutiens la Commission d'Évaluation de l'Inria.
