Raptor Computing Systems Community Forums (BETA)

Software => Operating Systems and Porting => Topic started by: tle on December 19, 2022, 10:10:42 pm

Title: [NEWS] Linux 6.2 brings new qspinlock to bolster large system scalability
Post by: tle on December 19, 2022, 10:10:42 pm

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Up to now IBM Power processors on Linux have relied on the generic queued spinlock "qspinlock" implementation within the kernel but that has been found to cause latency and starvation issues on large IBM POWER10 servers

Souce: https://www.phoronix.com/news/IBM-Power-Linux-6.2


I don't have enough knowledge to tell if it would benefit the POWER9

Title: Re: [NEWS] Linux 6.2 brings new qspinlock to bolster large system scalability
Post by: vikings.thum on December 21, 2022, 03:10:47 am

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[..]testing on upwards of 16 sockets with 1,920 CPU threads[..]

Probably not, we only have two sockets. I also don't believe that 16-socket machines are over-the-counter computers.
I thought these days most companies run their stuff on virtualized commodity hardware #strengthinnumbers.