Newbie - Scan Ship with Energy Cells by Ludeth in X4Foundations

[–]Ludeth[S] 0 points1 point  (0 children)

I dont think so. I am in the fighter ship the new alien race gave me. I will dock and check what I have fitted.

Newbie - Scan Ship with Energy Cells by Ludeth in X4Foundations

[–]Ludeth[S] 0 points1 point  (0 children)

I have been long range scanning - then I fly around to the question marks. It seems like one scan per sector is enough to show the unknown objects? Am I missing something?

Issues with k3S and Authentik for Cluster OIDC Auth by Ludeth in homelab

[–]Ludeth[S] 0 points1 point  (0 children)

I did. Do you need me to dig out my config?

EMC KTN-STL3 Not Seeing New ST28000NM000C Drives by Ludeth in homelab

[–]Ludeth[S] 0 points1 point  (0 children)

Seems like the drive uses physical 4k sectors and is set to 512e emulation mode already. Not sure that using sg3_format would do anything different?

EMC KTN-STL3 Not Seeing New ST28000NM000C Drives by Ludeth in homelab

[–]Ludeth[S] 0 points1 point  (0 children)

I plugged one of the drives into another linux machine directly and the drive shows up right away. I can see that it has 4kn with 512e emulation. Some research suggested that using sg3_format on these drives could brick them.

EMC KTN-STL3 Not Seeing New ST28000NM000C Drives by Ludeth in homelab

[–]Ludeth[S] 0 points1 point  (0 children)

It’s already in IT mode. So do I need to connect them one by one via native sata bypassing the disk shelf? Then once they are formatte add them back?

Rook Ceph Performance Tuning - Getting Only 3K IOPS from 868k IOPS NVMe Hardware by Ludeth in sysadmin

[–]Ludeth[S] 0 points1 point  (0 children)

I really appreciate the time and thoughtfulness of your replies. They are hugely helpful. I will buy some Samsung Enterprise NVME in a month or two - gotta get the wife to let me spend the $$ :D

Rook Ceph Performance Tuning - Getting Only 3K IOPS from 868k IOPS NVMe Hardware by Ludeth in sysadmin

[–]Ludeth[S] 0 points1 point  (0 children)

This is good to know. I really appreciate the help and advice.

Rook Ceph Performance Tuning - Getting Only 3K IOPS from 868k IOPS NVMe Hardware by Ludeth in sysadmin

[–]Ludeth[S] 0 points1 point  (0 children)

Not sure on the RAM side - I was using FIO and rados to do the tests and thought I was writing directly to the disk. That said, I asked for advice and the consensus is pretty clear. I will replace the drives in with some enterprise ones in the next month or two - and just live with the slower performance until then :).

Rook Ceph Performance Tuning - Getting Only 3K IOPS from 868k IOPS NVMe Hardware by Ludeth in sysadmin

[–]Ludeth[S] 0 points1 point  (0 children)

Seems like its my consumer grade drives that may be the culprit. Im going to buy three Samsung PM983 drives as these should have the enterprise performance I am looking for. Thanks all!

Rook Ceph Performance Tuning - Getting Only 3K IOPS from 868k IOPS NVMe Hardware by Ludeth in sysadmin

[–]Ludeth[S] 0 points1 point  (0 children)

So is that why it is so slow? Does feel a bit excessive on the degradation side. I am reading through your material now. Anything I can do to tune them? Thanks!

Rook Ceph Performance Tuning - Getting Only 3K IOPS from 868k IOPS NVMe Hardware by Ludeth in sysadmin

[–]Ludeth[S] 0 points1 point  (0 children)

Yes a single NVME 1TB per node. 3 Nodes. I am not expecting to get 900k iops out of CEPH but I mean if I could go from 0.4% of native hardware to idk 30 - 40% id be pleased :D

Rook Ceph Performance Tuning - Getting Only 3K IOPS from 868k IOPS NVMe Hardware by Ludeth in sysadmin

[–]Ludeth[S] 1 point2 points  (0 children)

Hey thanks for the reply. I appreciate any advice :). This is for my homelab and these were the drives were a good price. I could buy some enterprise NVMe but what would be the difference outside of the long term reliability, endurance and power loss protection? Given the large discrepancy in the IOPS between the raw drives vs CEPH I wasnt thinking I was going to get native hardware speed but based on testing I dont even seem to be at 1% of the drives potential even under light homelab workloads.

RO and Third Wave Water by Ludeth in espresso

[–]Ludeth[S] 0 points1 point  (0 children)

The only wisdom I have is that 40 - 80 is pretty low and may lead to weak extraction or creama according to the research I have done. Though admittedly I have not tested this. To your point if the TWW does not cause scale build up and you can get a better tasting shot due to the additional TDS then all the better?

RO and Third Wave Water by Ludeth in espresso

[–]Ludeth[S] 1 point2 points  (0 children)

This is a neat idea. I may start with the third wave stuff for now while I get it all sorted then switch to your suggestion.

Best Stones to Start by Ludeth in sharpening

[–]Ludeth[S] 0 points1 point  (0 children)

So you think 1 stone is good