Re: [dpdk-dev] [PATCH] eal: roundup tsc frequency when estimating it

2018-11-29 Thread Pavan Nikhilesh
Hi Stephen, On Thu, Nov 29, 2018 at 01:21:52PM -0800, Stephen Hemminger wrote: > On Thu, 29 Nov 2018 08:32:03 + > Pavan Nikhilesh wrote: > > > When estimating tsc frequency using sleep/gettime round it up to the > > nearest multiple of 10Mhz for more accuracy. > > > > Signed-off-by: Pavan Nik

Re: [dpdk-dev] [PATCH] eal: roundup tsc frequency when estimating it

2018-11-29 Thread Stephen Hemminger
On Thu, 29 Nov 2018 08:32:03 + Pavan Nikhilesh wrote: > When estimating tsc frequency using sleep/gettime round it up to the > nearest multiple of 10Mhz for more accuracy. > > Signed-off-by: Pavan Nikhilesh Rounding reduces accuracy. Why is this code being used? Shouldn't get_tsc_freq_ar

Re: [dpdk-dev] [PATCH] eal: roundup tsc frequency when estimating it

2018-11-29 Thread Jerin Jacob
-Original Message- > Date: Thu, 29 Nov 2018 14:02:03 +0530 > From: "Bhagavatula, Pavan" > To: "Jacob, Jerin" > CC: "dev@dpdk.org" , "Bhagavatula, Pavan" > > Subject: [dpdk-dev] [PATCH] eal: roundup tsc frequency when estimating

[dpdk-dev] [PATCH] eal: roundup tsc frequency when estimating it

2018-11-29 Thread Pavan Nikhilesh
When estimating tsc frequency using sleep/gettime round it up to the nearest multiple of 10Mhz for more accuracy. Signed-off-by: Pavan Nikhilesh --- lib/librte_eal/common/eal_common_timer.c | 4 ++-- lib/librte_eal/common/include/rte_common.h | 10 ++ lib/librte_eal/linuxapp/eal/eal_t