Without reading the links: from more then 20y Linux server and datacenter hosting environment, around 7y of Ceph, and hundreds of different systems all configured without swap. I never ever had a problem with noswap that would be solved using swap. But on my Linux desktop swap helps me a bit. btw, all multiple hundred croit based ceph deployments are 100% swap free. As we boot over the network directly into the ram, there is no swap disk that would be available. We don't have any issues with this and I doubt we will ever encounter such. -- Martin Verges Managing director Mobile: +49 174 9335695 E-Mail: martin.verges@croit.io Chat: https://t.me/MartinVerges croit GmbH, Freseniusstr. 31h, 81247 Munich CEO: Martin Verges - VAT-ID: DE310638492 Com. register: Amtsgericht Munich HRB 231263 Web: https://croit.io YouTube: https://goo.gl/PGE1Bx Nigel Williams <nigel.williams@tpac.org.au> schrieb am So., 8. Dez. 2019, 23:15:
On Sun, 8 Dec 2019 at 00:53, Martin Verges <martin.verges@croit.io> wrote:
Swap is nothing you want to have in a Server as it is very slow and can cause long downtimes.
Given the commentary on this page advocating at least some swap to enable Linux to manage memory when under pressure:
https://utcc.utoronto.ca/~cks/space/blog/unix/NoSwapConsequence
is it worth modifying the advice to at least have some swap available (even if only say 5% of overall memory)?
There was a hnews thread here but to me it seemed inconclusive about solving the overall problem (other than applications taking more responsibility for memory consumption):
https://news.ycombinator.com/item?id=20641551 _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io