View Issue Details

IDProjectCategoryView StatusLast Update
0015788CentOS-7kernelpublic2019-02-14 14:36
Reporterhexa 
PrioritynormalSeveritymajorReproducibilityalways
Status newResolutionopen 
Product Version7.6.1810 
Target VersionFixed in Version 
Summary0015788: 120 times increase in context switching
DescriptionIn kernel:
3.10.0-957.5.1.el7.x86_64 #1 SMP Fri Feb 1 14:54:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
after upgrading from 3.10.0-862.14.4.el7
in usage on multiple separate border gateway routers, CPU context switching has increased from 5000 up to 5000000.
Steps To Reproduceupgrade the kernel
Additional InformationI've attached graphs of CPU context switching from two of the routers.
I can provide additional info, if required.
TagsNo tags attached.
abrt_hash
URL

Activities

hexa

hexa

2019-02-06 12:15

reporter  

r1.png (94,158 bytes)
r1.png (94,158 bytes)
r2.png (98,123 bytes)
r2.png (98,123 bytes)
hexa

hexa

2019-02-06 12:29

reporter   ~0033782

Here is RHELs bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=1672995
pgreco

pgreco

2019-02-14 12:28

developer   ~0033833

@hexa can you add pablo@fliagreco.com.ar to the cc on that bug, so I can read it?
also, can you check if the problem appeared in the first 7.6 kernel (3.10.0-957.el7.x86_64) or after that?
hexa

hexa

2019-02-14 14:36

reporter   ~0033835

I have added pablo@fliagreco.com.ar to https://bugzilla.redhat.com/show_bug.cgi?id=1672995.

When I have the time, I will try to downgrade one of my core routers, reboot and test. Seems like it will not be very soon. :-/

Issue History

Date Modified Username Field Change
2019-02-06 12:15 hexa New Issue
2019-02-06 12:15 hexa File Added: r1.png
2019-02-06 12:15 hexa File Added: r2.png
2019-02-06 12:27 TrevorH Summary 120 times increase in context swithing => 120 times increase in context switching
2019-02-06 12:29 hexa Note Added: 0033782
2019-02-14 12:28 pgreco Note Added: 0033833
2019-02-14 14:36 hexa Note Added: 0033835