On 11/18/2015 6:30 PM, Zhihong Wang wrote: > This RFC patch aims to reduce DPDK initialization time, which is important in > cases such as micro service. > > Changes are: > > 1. Reduce timer initialization time > > 2. Remove unnecessary hugepage zero-filling operations > > With this patch: > > 1. Timer initialization time can be reduced by 4/10 second > > 2. Memory initialization time can be reduced nearly by half > > The 2nd topic has been brought up before in this thread: > http://dpdk.org/dev/patchwork/patch/4219/ > > Zhihong Wang (2): > lib/librte_eal: Reduce timer initialization time > lib/librte_eal: Remove unnecessary hugepage zero-filling > > lib/librte_eal/linuxapp/eal/eal_memory.c | 5 +---- > lib/librte_eal/linuxapp/eal/eal_timer.c | 2 +- > 2 files changed, 2 insertions(+), 5 deletions(-) >
As I tested with 8192 hugepages(size 2M), one nic 82599 bind, using time to get the seconds used: with this patch: echo quit | time ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x3 -n 4 -- -i 2.15 user 5.55 system 0:07.82 elapsed Without patch: echo quit | time ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x3 -n 4 -- -i 3.18 user 5.63 system 0:09.32 elapsed 1.5s saved, 16% improvement, I don't know if this is good enough, but indeed save lots of time. Thanks, Michael
