RE: Multi-threaded process on a multi-vCPU system
Date: Mon, 31 Aug 2020 21:47:18 +0000
Message-ID: <DM6PR11MB3483FCC0A2AB835A1BA66DE9F4510_at_DM6PR11MB3483.namprd11.prod.outlook.com>
I appreciate the feedback.
Thank you.
From: oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> On Behalf Of Noveljic Nenad
Sent: Monday, August 31, 2020 4:51 PM
To: gogala.mladen_at_gmail.com; Hameed, Amir <Amir.Hameed_at_xerox.com>; oracle-l_at_freelists.org
Subject: RE: Multi-threaded process on a multi-vCPU system
CAUTION: This email originated from outside the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. It’s worth noting that the whole point of multi-threading is parallelizing. Serializing the execution on a single CPU would defeat that purpose.
Best regards,
Nenad
http://nenadnoveljic.com/blog/
From: Mladen Gogala <gogala.mladen_at_gmail.com<mailto:gogala.mladen_at_gmail.com>>
Sent: Montag, 31. August 2020 22:34
To: Noveljic Nenad <nenad.noveljic_at_vontobel.com<mailto:nenad.noveljic_at_vontobel.com>>; Amir.Hameed_at_xerox.com<mailto:Amir.Hameed_at_xerox.com>; oracle-l_at_freelists.org<mailto:oracle-l_at_freelists.org>
Subject: Re: Multi-threaded process on a multi-vCPU system
It is possible to set the CPU affinity using the "taskset" program. Also, numactl --localalloc can be used to prevent tasks from being scheduled on non-local node.
On Mon, 2020-08-31 at 19:26 +0000, Noveljic Nenad wrote:
Hi Amir,
The threads of the same process can be scheduled on different cpus.
Best regards,
Nenad
Mladen Gogala
Database Consultant
Tel: (347) 321-1217
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