Yes, but we’d upgraded all out HPC client nodes to 5.0.2-1 last week as well when this first happened …
Unless it’s necessary to upgrade the NSD servers as well for this? Simon From: <[email protected]> on behalf of "[email protected]" <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Tuesday, 27 November 2018 at 19:48 To: "[email protected]" <[email protected]> Subject: Re: [gpfsug-discuss] Hanging file-systems "paging to disk" sometimes means mmap as well - there were several issues around that recently as well. Regards, Tomer Perry Scalable I/O Development (Spectrum Scale) email: [email protected] 1 Azrieli Center, Tel Aviv 67021, Israel Global Tel: +1 720 3422758 Israel Tel: +972 3 9188625 Mobile: +972 52 2554625 From: Skylar Thompson <[email protected]> To: [email protected] Date: 27/11/2018 20:28 Subject: Re: [gpfsug-discuss] Hanging file-systems Sent by: [email protected] ________________________________ Despite its name, kswapd isn't directly involved in paging to disk; it's the kernel process that's involved in finding committed memory that can be reclaimed for use (either immediately, or possibly by flushing dirty pages to disk). If kswapd is using a lot of CPU, it's a sign that the kernel is spending a lot of time to find free pages to allocate to processes. On Tue, Nov 27, 2018 at 05:53:58PM +0000, Simon Thompson wrote: > Thanks Sven ??? > > We found a node with kswapd running 100% (and swap was off)??? > > Killing that node made access to the FS spring into life. > > Simon > > From: <[email protected]> on behalf of > "[email protected]" <[email protected]> > Reply-To: "[email protected]" > <[email protected]> > Date: Tuesday, 27 November 2018 at 16:14 > To: "[email protected]" <[email protected]> > Subject: Re: [gpfsug-discuss] Hanging file-systems > > 1. are you under memory pressure or even worse started swapping . > _______________________________________________ > gpfsug-discuss mailing list > gpfsug-discuss at spectrumscale.org > https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=mLPyKeOa1gNDrORvEXBgMw&m=sgaWNOJnHka2HBtMNNXBur4p2KbQ8q786tWza40tcLQ&s=CWkCUHu4-uwZQ6r1x_VFAGqQ5FFSBGXMSVa5t2pk424&e= -- -- Skylar Thompson ([email protected]) -- Genome Sciences Department, System Administrator -- Foege Building S046, (206)-685-7354 -- University of Washington School of Medicine _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=mLPyKeOa1gNDrORvEXBgMw&m=sgaWNOJnHka2HBtMNNXBur4p2KbQ8q786tWza40tcLQ&s=CWkCUHu4-uwZQ6r1x_VFAGqQ5FFSBGXMSVa5t2pk424&e=
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