[lustre-discuss] Lustre caching and NUMA nodes

2023-12-07 Thread John Bauer
s before the MGT and MDT are online? -- Message: 2 Date: Wed, 6 Dec 2023 12:40:54 + From:p...@lustre.list.sabi.co.uk (Peter Grandi) To: list Lustre discussion Subject: Re: [lustre-discuss] Lustre caching and NUMA nodes Message-ID:<25968.27606.536270.208...@petal.ty.sabi.co.uk> Co

Re: [lustre-discuss] Lustre caching and NUMA nodes

2023-12-06 Thread Peter Grandi via lustre-discuss
> I have a an OSC caching question.  I am running a dd process > which writes an 8GB file.  The file is on lustre, striped > 8x1M. How the Lustre instance servers store the data may not have a huge influence on what happens in the client's system buffer cache. > This is run on a system that has

Re: [lustre-discuss] Lustre caching and NUMA nodes

2023-12-05 Thread John Bauer
Andreas, Thanks for the reply. Client version is 2.14.0_ddn98. Here is a plot of the *write_RPCs_in_flight* plot.  Snapshot every 50ms.  The max for any of the samples for any of the OSCs was 1.  No RPCs in flight while the OSCs were dumping memory.  The number following the OSC name in the

Re: [lustre-discuss] Lustre caching and NUMA nodes

2023-12-05 Thread Andreas Dilger via lustre-discuss
On Dec 4, 2023, at 15:06, John Bauer mailto:bau...@iodoctors.com>> wrote: I have a an OSC caching question. I am running a dd process which writes an 8GB file. The file is on lustre, striped 8x1M. This is run on a system that has 2 NUMA nodes (cpu sockets). All the data is apparently stored