I'm sorry I sent last message from another email On Wednesday, March 9, 2016, researcher cs <[email protected]> wrote:
> thanks for replying , really i'm apperciate your help , so cpu usage is > important to measure performance ? > i need to know how can i use all numbers in storm ui to evaluate topology > means like this > > Topology A > > > > Topology B > > i see execute latency , capcaity and process latency > from these numbers how can i detect performance > high is better or what ? > Thanks for your time > > > On Wed, Mar 9, 2016 at 6:51 AM, Cody Innowhere <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> @sam, >> CPU usage is very close to your application logic, i.e., it depends on >> whether your topology is CPU-intensive or not. >> It may be also related to the throughput of your topologies. So it's >> really >> hard to tell if a certain cpu usage like .5 is good or bad. >> >> In your case of comparing two topologies, let's say topology A and B, I >> can >> give some rough hints: >> 1. If A's CPU usage is higher than B with higher throughput, I'd say >> possibly it's worth higher CPU usage to gain extra throughput; >> 2. If A's throughput and B's throughput are almost the same, I'd prefer >> the >> topology which has lower CPU usage. >> >> Hope this helps. >> >> On Wed, Mar 9, 2016 at 12:28 PM, sam mohel <[email protected] >> <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: >> >> > What is the importance of CPU utilization after submitted topology as I >> > need to compare between two topologies which is better in performance >> > >> > And numbers which close to .5 is better or not ? >> > How can I know ? >> > Thanks >> > >> > >
