Date: Sun, 1 Jul 2018 20:34:52 -0300 From: Suneet Singh <er.suneetsingh@gmail.com> To: rizzo@iet.unipi.it Cc: net@freebsd.org Subject: Regarding latency of Netmap i/o Message-ID: <CAOtLXvR4xmsv_ctUtB-2NPaNQTQuVk4d_VMBw0G%2B2L5OAf22GA@mail.gmail.com>
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Dear Professor, I am Suneet from India. I am a PhD student in Unicamp, Campinas, Brazil. I am testing latency of MACSAD P4 software switch. I found that latency using netmap i/o is higher than using socket_mmap i/o while in case of dpdk, latency is very low. As I read the research papers related to netmap, I found that it may be the reason of high latency in case of netmap compare to socket_mmap due to batch process. However, I am not sure why latency of my switch is higher using netmap compare to sockte mmap. I am requesting you to please let me know the performance of netmap interms of latency (end-to-end) compare to socket_mmap. Thank you so much for your precious time. *" Man needs his difficulties because they are necessary to enjoy success."* Kind Regards *Suneet Kumar Singh* https://www.researchgate.net/profile/Suneet_Singh7
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