[gpfsug-discuss] mmfsd and oom settings

[Bryan Banister]

The latest versions of the IBM provided gpfs.service systemd unit does set the oomscore so that the mmfsd process will not be killed.

I would prefer to have a GPFS config option for the oomscore adjustment which I could set on a per node basis.  There are times when you may want to set GPFS to be killed on a node in order to preserve the health of the overall cluster, helping to prevent deadlocks on a node that is under heavy memory pressure.

Hope that helps,
-Bryan

-----Original Message-----
From: gpfsug-discuss-bounces at spectrumscale.org <gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Lukas Hejtmanek
Sent: Monday, September 17, 2018 10:54 AM
To: gpfsug-discuss at spectrumscale.org
Subject: [gpfsug-discuss] mmfsd and oom settings

[EXTERNAL EMAIL]

Hello,

I accidentally got killed mmfsd by oom killer because of pagepool size which is normally ok but there was memory leak in smbd process so system run out of memory. (64gb pagepool but also two 32GB smbd processes)

Shouldn't gpfs startup script set oom_score_adj to some proper value so that mmfsd is never get killed? It basically ruins the things..

--
Lukáš Hejtmánek

Linux Administrator only because
  Full Time Multitasking Ninja
  is not an official job title
_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgpfsug.org%2Fmailman%2Flistinfo%2Fgpfsug-discuss&data=02%7C01%7Cbbanister%40jumptrading.com%7C623834dea5374a24f65208d61cb7a386%7C11f2af738873424085a3063ce66fc61c%7C0%7C0%7C636727972384810921&sdata=IyRUWZlnEuNRJsQZvPRhEq6xSQxLQ7%2FILUXE7rVUtNE%3D&reserved=0

________________________________

Note: This email is for the confidential use of the named addressee(s) only and may contain proprietary, confidential, or privileged information and/or personal data. If you are not the intended recipient, you are hereby notified that any review, dissemination, or copying of this email is strictly prohibited, and requested to notify the sender immediately and destroy this email and any attachments. Email transmission cannot be guaranteed to be secure or error-free. The Company, therefore, does not make any guarantees as to the completeness or accuracy of this email or any attachments. This email is for informational purposes only and does not constitute a recommendation, offer, request, or solicitation of any kind to buy, sell, subscribe, redeem, or perform any type of transaction of a financial product. Personal data, as defined by applicable data privacy laws, contained in this email may be processed by the Company, and any of its affiliated or related companies, for potential ongoing compliance and/or business-related purposes. You may have rights regarding your personal data; for information on exercising these rights or the Company’s treatment of personal data, please email datarequests at jumptrading.com.