I’ve seen C-states impact mons by dropping a bunch of packets — on nodes that were lightly utilized so they transitioned a lot. Curiously both CPU and NIC generation seemed to be factors, as it only happened on one cluster out of a dozen or so.
If by SSD you mean SAS/SATA SSDs, then the question is kinda broad, but probably. With HDD OSDs I suspect not. > On Jan 26, 2024, at 7:35 PM, Christopher Durham <caduceu...@aol.com> wrote: > > Hi, > The following article: > https://ceph.io/en/news/blog/2024/ceph-a-journey-to-1tibps/ > > suggests that dsabling C-states on your CPUs (on the OSD nodes) as one method > to improve performance. The article seems to indicate that the scenariobeing > addressed in the article was with NVMEs as OSDs. > > Questions: > Will disabling C-states and keeping the processors at max power state help > performance for the following: > 1. NVME OSDs (yes)2. SSD OSDs3. Spinning disk OSDs > > -Chris > > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
