From: Gowrishankar <gowrishankar.m@linux.vnet.ibm.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: dev@dpdk.org,
Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
Subject: [dpdk-dev] [PATCH] usertools: fix cpu_layout script for multithreads of more than 2
Date: Fri, 28 Apr 2017 16:04:35 +0530 [thread overview]
Message-ID: <a052e6f8f637230cc2c0f5e5657735e58bc80b70.1493375418.git.gowrishankar.m@linux.vnet.ibm.com> (raw)
From: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
Current usertools/cpu_layout.py is broken to handle multithreads of count more
than 2 as in IBM powerpc P8 servers. Below patch addressed this issue. Also,
added minor exception catch on failing to open unavailable sys file in case of
multithread=off configuration in server.
Patch has been verified not to break existing topology configurations
and also not changing anything in current output.
Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
usertools/cpu_layout.py | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/usertools/cpu_layout.py b/usertools/cpu_layout.py
index 5735891..99152a2 100755
--- a/usertools/cpu_layout.py
+++ b/usertools/cpu_layout.py
@@ -46,6 +46,8 @@
for cpu in xrange(max_cpus + 1):
try:
fd = open("{}/cpu{}/topology/core_id".format(base_path, cpu))
+ except IOError:
+ continue
except:
break
core = int(fd.read())
@@ -70,7 +72,10 @@
print("")
max_processor_len = len(str(len(cores) * len(sockets) * 2 - 1))
-max_core_map_len = max_processor_len * 2 + len('[, ]') + len('Socket ')
+max_thread_count = len(core_map.values()[0])
+max_core_map_len = (max_processor_len * max_thread_count) \
+ + len(", ") * (max_thread_count - 1) \
+ + len('[]') + len('Socket ')
max_core_id_len = len(str(max(cores)))
output = " ".ljust(max_core_id_len + len('Core '))
@@ -87,5 +92,8 @@
for c in cores:
output = "Core %s" % str(c).ljust(max_core_id_len)
for s in sockets:
- output += " " + str(core_map[(s, c)]).ljust(max_core_map_len)
+ if core_map.has_key((s,c)):
+ output += " " + str(core_map[(s, c)]).ljust(max_core_map_len)
+ else:
+ output += " " * (max_core_map_len + 1)
print(output)
--
1.9.1
next reply other threads:[~2017-04-28 10:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-28 10:34 Gowrishankar [this message]
2017-04-28 11:58 ` Thomas Monjalon
2017-04-28 12:25 ` Andriy Berestovskyy
2017-04-30 13:29 ` Thomas Monjalon
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=a052e6f8f637230cc2c0f5e5657735e58bc80b70.1493375418.git.gowrishankar.m@linux.vnet.ibm.com \
--to=gowrishankar.m@linux.vnet.ibm.com \
--cc=dev@dpdk.org \
--cc=thomas@monjalon.net \
/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).