Bug 1060195
| Summary: | Lack of 64-Bit Counters in /sbin/ip -s link show | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Ted Rule <ejtr> | ||||||
| Component: | iproute | Assignee: | Pavel Šimerda (pavlix) <psimerda> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | Jaroslav Aster <jaster> | ||||||
| Severity: | low | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | 6.5 | CC: | jaster, knoha, psimerda, thozza, tnagata | ||||||
| Target Milestone: | rc | Keywords: | Patch | ||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | iproute-2.6.32-38.el6 | Doc Type: | Bug Fix | ||||||
| Doc Text: |
The /sbin/ip file displayed statistics for 32-bit system even on 64-bit kernel. To fix this bug, a patch has been applied, and the statistics are now presented correctly.
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Story Points: | --- | ||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2015-07-22 06:40:53 UTC | Type: | Bug | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Embargoed: | |||||||||
| Attachments: |
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Created attachment 967374 [details]
patch
Hi,
there is a mistake in printing rx/tx stats, the number is correct.
# # rpm -q iproute
iproute-2.6.32-37.el6.x86_64
# ip -s l show dev lo
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
RX: bytes packets errors dropped overrun mcast
412714401141825064980 0 0 0
TX: bytes packets errors dropped carrier collsns
412714401141825064980 0 0 0
# ifconfig lo
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:182506498 errors:0 dropped:0 overruns:0 frame:0
TX packets:182506498 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:41271440114 (38.4 GiB) TX bytes:41271440114 (38.4 GiB)
You can see that there are no spaces between rx/tx bytes, packages and errors, so there is one number instead of three numbers.
Created attachment 993889 [details]
patch
Also backported the print_num() function that is used in the code.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-1331.html |
Description of problem: /sbin/ip shows 32-bit statistics, even on 64-bit kernel. Version-Release number of selected component (if applicable): For this kernel/iproute/net-tools combination on my test rig: [root@trafalgar-centos65-x86-64 ~]# uname -a Linux trafalgar-centos65-x86-64.bugfinder.co.uk 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux [root@trafalgar-centos65-x86-64 ~]# iproute-2.6.32-31.el6.x86_64 net-tools-1.60-110.el6_2.x86_64 How reproducible: Having pumped about 5GB of data in to a test CentOS6.5 x86_64 instance, I could see that /sbin/ifconfig reported >4GB of Rx Bytes, whilst "/sbin/ip -s link show" reported 600MB, indicating that ifconfig is using a 64-bit counter whilst /sbin/ip is using a 32-bit counter. FWIW, SNMP interfaces MIB still reports a 32-bit Counter, but that's to be expected as it's defined as 32-bit in the MIB, but the HC-MIB does report 64-bit Counters on x86_64 as shown by the tests below. [root@trafalgar-centos65-x86-64 ~]# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:1C:42:91:BE:74 inet addr:10.211.55.8 Bcast:10.211.55.255 Mask:255.255.255.0 inet6 addr: fe80::21c:42ff:fe91:be74/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3455650 errors:0 dropped:0 overruns:0 frame:0 TX packets:463111 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4931589231 (4.5 GiB) TX bytes:33046767 (31.5 MiB) [root@trafalgar-centos65-x86-64 ~]# [root@trafalgar-centos65-x86-64 ~]# ip -s link show eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:1c:42:91:be:74 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 636623473 3455667 0 0 0 1 TX: bytes packets errors dropped carrier collsns 33048677 463120 0 0 0 0 [root@trafalgar-centos65-x86-64 ~]# FWIW, neither ifconfig nor /sbin/ip nor SNMP HC-MIB report 64-bit Counters on 32-bit Kernels, but I understand that part of the reason for that may be difficulties in updating a 64-bit kernel variable atomically on a 32-bit ARCH. It would be good, in my view, to not support HC-MIB on 32-bit ARCH unless it can report a true 64-bit Counter, but that may be something of a religious argument :) [root@trafalgar-centos65-x86-64 ~]# snmpwalk -c public -v 2c localhost interfaces | grep Octets IF-MIB::ifInOctets.1 = Counter32: 0 IF-MIB::ifInOctets.2 = Counter32: 636619429 IF-MIB::ifOutOctets.1 = Counter32: 0 IF-MIB::ifOutOctets.2 = Counter32: 33042059 [root@trafalgar-centos65-x86-64 ~]# [root@trafalgar-centos65-x86-64 ~]# snmpwalk -c public -v 2c localhost .1.3.6.1.2.1.31 | grep Octets IF-MIB::ifHCInOctets.1 = Counter64: 13572 IF-MIB::ifHCInOctets.2 = Counter64: 4931600285 IF-MIB::ifHCOutOctets.1 = Counter64: 13572 IF-MIB::ifHCOutOctets.2 = Counter64: 33058003 [root@trafalgar-centos65-x86-64 ~]#