From: Hari Haran <info2hariharan@gmail.com>
To: users@dpdk.org
Subject: rte_rdtsc() - what is the performance impact of using rte_rdtsc() time
Date: Tue, 29 Aug 2023 20:25:54 +0530 [thread overview]
Message-ID: <CAPbxCtrRqXHU772U7eZFoDcKL2pRiE39vgBifWYC96kC04MhiQ@mail.gmail.com> (raw)
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Hi All,
Subject: rte_rdtsc() - what is the performance impact of using rte_rdtsc()
time under lcore thread while(1)
Requirement:
1. Store the packet received timestamp - based on it packets will be
removed from buffer if it exceeds the threshold timer of buffer
2. Two threads are available, One is lcore(dedicated core) and another
is pthread(not a dedicated core. In pthread, have to get the timestamp of
last received packet timestamp
Query:
1. For every packet reception in lcore thread under while(1), will get
the packet received timestamp using rte_rdtsc() function. Whether usage of
rte_rdtsc() function adds more delay in packet processing?
2. Is there any way to convert rte_rdtsc() timestamp value to current
system time in pthread()? In pthread, the last packet received time needed
in the form of system time.
Thanks in advance.
Regards,
Hariharan
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next reply other threads:[~2023-08-29 14:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-29 14:55 Hari Haran [this message]
2023-09-05 23:29 ` Stephen Hemminger
2023-10-03 10:19 ` Hari Haran
2023-10-03 17:17 ` Stephen Hemminger
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