I have bought the following 2nd hand server machine:
HP Proliant ML330 Gen6 E5504 2.0GHz Quad Core, 12GB RAM installed
I installed CentOS 8 on a SATA SSD connected to a SATA port on the motherboard, since I plan to buy the SAS drives for RAID array once I am happy that I can get the machine + OS working properly.
During OS installation from USB I did notice the GUI reacting slowly (2-3 sec page transitions). This was not the case during a trial installation of CentOS 8 using the same media on a laptop of far inferior spec, which operated quickly and smoothly.
Immediately following installation on the server I could see that it was running slow to the point of being unusable. I cannot move the mouse pointer more than a few millimeters at a time and typing speed in Terminal is about one character for every 5 seconds. This was without any other applications running (I haven't even gotten as far as installing any).
BIOS firmware version was dated 2010. I have now updated it to the very last version released (2018), but it has made no difference.
I just about managed to generate the following cpuinfo. Apologies for the bad photo. I might have been able to copy & paste but it would have taken a day... I've had to type this post on my Windoze PC.
Am I right in believing that the most likely cause of the slow performance is mitigation of the following vulnerability?
Code: Select all
cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf
I see that it may be possible to disable Spectre, Meltdown and L1TF mitigations but surely that would put my machine at risk, so would there be any way of both preventing mitigation in the form of slowing down of CPU and keeping the system safe? If so can anyone please advise how?
I have read that vulnerability mitigation measures can slow the CPU down by up to 20% but this feels like 95%, so I'm sure there is something else to it...
Many thanks in advance.