[dpdk-dev] [PATCH RFC v2 1/2] lib/librte_eal: Reduce timer initialization time
Changing from 1/2 second to 1/10 doesn't compromise the precision, and a 4/10 second is worth saving. Signed-off-by: Zhihong Wang --- lib/librte_eal/linuxapp/eal/eal_timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/librte_eal/linuxapp/eal/eal_timer.c b/lib/librte_eal/linuxapp/eal/eal_timer.c index e0642de..4de0353 100644 --- a/lib/librte_eal/linuxapp/eal/eal_timer.c +++ b/lib/librte_eal/linuxapp/eal/eal_timer.c @@ -271,7 +271,7 @@ get_tsc_freq(void) #ifdef CLOCK_MONOTONIC_RAW #define NS_PER_SEC 1E9 - struct timespec sleeptime = {.tv_nsec = 5E8 }; /* 1/2 second */ + struct timespec sleeptime = {.tv_nsec = 1E8 }; /* 1/10 second */ struct timespec t_start, t_end; uint64_t tsc_hz; -- 2.5.0
[dpdk-dev] [PATCH RFC v2 1/2] lib/librte_eal: Reduce timer initialization time
On Thu, 19 Nov 2015 20:53:47 -0500 Zhihong Wang wrote: > + struct timespec sleeptime = {.tv_nsec = 1E8 }; /* 1/10 second */ Why not NSEC_PER_SEC / 10
[dpdk-dev] [PATCH RFC v2 1/2] lib/librte_eal: Reduce timer initialization time
> -Original Message- > From: Stephen Hemminger [mailto:stephen at networkplumber.org] > Sent: Saturday, November 21, 2015 12:32 AM > To: Wang, Zhihong > Cc: dev at dpdk.org > Subject: Re: [dpdk-dev] [PATCH RFC v2 1/2] lib/librte_eal: Reduce timer > initialization time > > On Thu, 19 Nov 2015 20:53:47 -0500 > Zhihong Wang wrote: > > > + struct timespec sleeptime = {.tv_nsec = 1E8 }; /* 1/10 second */ > > Why not NSEC_PER_SEC / 10 Yes, it looks better using macro :)