Hi Zhike,

On Fri, Feb 2, 2018 at 7:48 AM, Ben Pfaff <b...@ovn.org> wrote:
> On Fri, Feb 02, 2018 at 12:37:58PM +0000, 王志克 wrote:
>> I also found that if once theres are lots of flows, the memory (RSS) usage 
>> of OVS process would be quite high, 2~3GB. Even then the flows disappear 
>> later, the memory still keeps.

Are you able to reproduce the issue?
There might be a memory leak around cls_rule, miniflow/minimatch allocation.
Can you share more information about your setup?

Thanks!
William

>>
>> I am not sure how many people notices this, but if indeed OVS has such 
>> defect, I guess this should be critical blocker.
>
> This is normal behavior of the C library malloc implementation.
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