Hello, i am an advanced user of linux and this has been the most troubling issue i have ever faced. The system doesnt respond anymore to mouse or keyboard input. The rhel soft lockup defect can cause huge cpu performance problems for db2 and bigsql. The original was a lockup in the timer code, while this one is a lockup in the ipsec code. The centosrhel kernel has a default softlockup threshold of 10 seconds. Any nvme type of storage used as the root filesystem will cause cpu soft lockup as described in bug 1798127. The technical reason behind a soft lock involves cpu interrupts and nmiwatchdog. Just saw the soft lockup again when restarting dockerd, the environment was.
The problem typically occurs when the load is low while web surfing stress testing with e. I have installed sap hana studio and added the sap hana express edition as system. Hello, i am an advanced user of linux and this has been the most troubling issue i. I have a linux machine that is giving a lot of bug.
Actually the halt does not happen immediately after the limit is reached, but is triggered by some operation in my case. Download ubuntu desktop, ubuntu server, ubuntu for raspberry pi and iot devices, ubuntu core and all the ubuntu flavours. I finally managed to install xenhypervisoramd64 on an ubuntu 15. The watchdog daemon will send an nonmaskable interrupt nmi to all cpus in the system who, in turn, print the stack traces of their currently running tasks.
No clue as to why they are happening, but it almost always happens while the screen is blanked. The log message you need to include in the bug report is the one starting with nmi watchdog. Mint will shut down with the above message adding that it cannot forward the msg because it. There seems to be a timekeeping bug in at least ubuntu s kernel version 2. Rhel soft lockup defect can cause huge cpu performance. I immediately knew it had something to do either with a distupgrade from ubuntu 10 lts to 14 lts or a ddos attack on my server. Just looked at the logs yesterday and noticed this kernel bug message on both servers.
Dec 08, 2017 for ubuntu or linux cpu 0,1,2,3 stuck please like and subscribe sorry for bad english. For ubuntu or linux cpu 0,1,2,3 stuck please like and subscribe sorry for bad english. The other two that i am actively working on have not exhibited this behavior. May 14, 2018 page 1 of 2 soft lockup on new ubuntu 18. A truly free lan messenger crossplatform open source chat client. Im intermittently hitting a soft lockup in the rancher vm that i installed using the ui per the docs. Ubuntu is an opensource software platform that runs everywhere from the pc to the server and the cloud.
After running fine for a couple of hours the server suddenly timed out on ssh, bind etc. Not doing anything special, just browsing the web and i get a few of these soft lockups. You do this when you are triaging bug reports requirements for joining. Download the latest lts version of ubuntu, for desktop pcs and laptops. Guest was set up with 1 cpu, but since my host has a quad intel processor, i decided to try increasing it to 4 cpus on the guest. During boot up i get several of the soft lockup messages on various cpus i have it set to 28 because my host machine is a dual zeon processor with 56 cpus. For each cpu on the system, a watchdog process gets created. Ryzen 1700x 8 cores system randomly hard freezes with a soft lockup bug and a hard reset is needed. I prefer ubuntu, but w10 is useful for some things and i paid for it, so i figure ill dual boot for a while, so i downloaded ubuntu 16. In this case it may be caused by a bug in the kernel when.
However, if i try to install the driver using rpm and then reboot the system, during startup the os gets stuck spitting out the following soft lockup message for all the cpu cores, except for one core that is in soft lockup in one of the threads created by my driver. What is a cpu soft lockup inetservicescloud knowledgebase. Question about complete bootable os and all program copy in live ubuntu using dd command. Any message in varlogmessages referencing soft lockups like these. The startup is not as smooth and the lt will not shut off. Often i have to poweroff the server, but last time i found some information in syslog. Describe the bug errors and timeouts when using rsync to copy files from an nfs share to the same nfs share. Bugzilla bug 200087 acer aspire a315x amd notebooks amd iommu ivrs problem, soft lockup last modified. Created attachment 257955 example log full description of the problemreport. So far, i havent found any clue as to what to do or try rather, the clues ive found and followed havent stopped this from happening. Ive seen a few bug reports and questions on stackexchange and elsewhere regarding a nagging bug. There seems to be a timekeeping bug in at least ubuntus kernel version 2. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features.
Cannot reboot, have to power it off and on when it happens. Only users with topic management privileges can see it. A soft lockup is defined as a bug that causes the kernel to loop in kernel mode for more than 20 seconds without giving other tasks a chance to run. Sometimes i search some info in browser or just have fun. I have my terminal always opened fedora 22, because all my work i do from there. This can sometimes be too low if the system is very busy with io. The ubuntu bug control team ubuntu bugcontrol in launchpad is a subset of the ubuntu bug squad who can change the importance of ubuntu bug tasks, set the status of an ubuntu bug task to triaged or wont fix and target a bug for a release of ubuntu. Ive configured rancher to mount my freenas volumes over nfs in.
So, there seems to be a problem with 4 cpus, at least for me, that causes bug. A soft lockup is the symptom of a task or kernel thread using and not releasing a cpu for a period of time. I am running some sdwan applications like sdn switching, routing etc, in a guest node ubuntu linux 14. Apr 04, 2014 a soft lockup is the symptom of a task or kernel thread using and not releasing a cpu for a period of time. Lts stands for longterm support which means five years, until april 2025, of free security and maintenance updates, guaranteed. Frequently the host cpu utilization goes to 100% and the guest reports messages similar to the following. I read somewhere on this forum to make a change in virtmanager. After 2030 minutes of browsing browser starts not from.
Let me know if there might be other diagnostic info else where on the system to collect. This was backported to rhel 6 on private bug 1090561 and released in rhel 6. Both individuals and teams can join ubuntu bug control. I have 16gb ram on my desktop and i am using vmware player to run the sap hana express edition. The messages log with the lockup is attached below. I have a debug kernel loaded with symbols but im not 100% sure i am providing useful info, please ask for anything further. Multiple programs listed loading gnome display manager. Symptom when the database seems to slow down, a quick running utility doesnt finish, or a shutdown fails for no obvious reason then go look in the os logs for messages about soft lockup. Soft lockup if this is your first visit, be sure to check out the faq by clicking the link above. Apr 10, 2015 having never seen this before as i have been running virtual ubuntu servers for years, i was a bit troubled to say the least. I have tried reinstalling the desktop with sudo aptget install reinstall ubuntudesktop and udating the intel graphics driver.