From: 이지수 <skan1543@gmail.com>
To: users@dpdk.org
Subject: [dpdk-users] Problem profiling DPDK
Date: Mon, 16 Jul 2018 17:11:02 +0900 [thread overview]
Message-ID: <CABk63eup6yUxOcvXoVcpoOPEi5-7mKeXCF=1E_0NU-W1EDesSw@mail.gmail.com> (raw)
Hi,
I have some issues with receiving 60bytes size packets without loss, so
used perf tools to see what's happening.
I built DPDK and application which I'm using (DPDK-pktgen) with proper
options for debugging (-g, O0) and here is my perf report's result.
# Children Self Command Shared Object Symbol
89.16% 0.00% lcore-slave-8 pktgen [.] eal_thread_loop
89.16% 0.00% lcore-slave-8 pktgen [.]
pktgen_launch_one_lcore
89.09% 0.66% lcore-slave-8 pktgen [.]
pktgen_main_rxtx_loop
86.86% 2.43% lcore-slave-8 pktgen [.]
pktgen_main_receive
47.08% 34.92% lcore-slave-8 pktgen [.] rte_pktmbuf_free
33.78% 5.77% lcore-slave-8 pktgen [.]
pktgen_packet_classify_bulk
23.29% 11.15% lcore-slave-8 pktgen [.]
pktgen_packet_classify
10.93% 10.89% lcore-slave-8 pktgen [.]
i40e_recv_pkts_vec
10.84% 0.00% lcore-slave-8 [unknown] [.]
0x00303a3420205852
10.83% 0.00% lcore-slave-8 [unknown] [.]
0x00007f877d914680
10.52% 10.49% lcore-slave-8 pktgen [.]
pktgen_packet_type
7.35% 3.05% lcore-slave-8 pktgen [.]
rte_mbuf_refcnt_read
4.36% 4.35% lcore-slave-8 pktgen [.]
rte_atomic16_read
4.35% 4.34% lcore-slave-8 pktgen [.] rte_prefetch0
3.32% 3.31% lcore-slave-8 pktgen [.]
rte_memcpy_generic
I could see many readable symbols but there are two unknown symbols taking
10% at Children column.
Does anyone have ideas what these symbols are?
Thanks in advance.
Regards,
Jeesoo Lee
next reply other threads:[~2018-07-16 8:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-16 8:11 이지수 [this message]
2018-07-16 15:47 ` Wiles, Keith
2018-07-17 3:26 ` 이지수
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CABk63eup6yUxOcvXoVcpoOPEi5-7mKeXCF=1E_0NU-W1EDesSw@mail.gmail.com' \
--to=skan1543@gmail.com \
--cc=users@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).