Linode Vultr Move from vultr to linode caused a huge performance decrease

That is the exact reason why you're experiencing slowness - as you had Vultr older fast 3.60ghz cpus which were faster with faster disk and memory. Vultr then later switched to slower Vultr 2.40Ghz and that meant Linode cpus were faster but not faster than Vultr old 3.60Ghz - see benchmarks i did at DigitalOcean - Linode - Vultr - Benchmarks - DigitalOcean vs Vultr vs Linode Benchmark Compare. Vultr web site still shows old benchmarks with 3.40-3.60Ghz cpus while they now have switched to much slower 2.40Ghz cpus. So if you had Vultr 3.4-3.6Ghz cpus you should keep them but if you have Vultr 2.4Ghz, then move to Linode.

 

but this part could be due to something else as well besides difference cpus.. you should figure out what's causing 100% cpu load

CPU load optimal is 1.0 per cpu thread so 8 cpu thread normal = 8x1 = 8.0. 16 cpu server normal is 16x1 = 16.0

so cpu load of 8 for

• 2 cpu server = 8/2 = 4.0 load average
• 4 cpu server = 8/4 = 2.0 load average
• 8 cpu server = 8/8 = 1.0 load average

When you type top command, hit number 1 to break down per cpu stats

Centmin Mod is provided as is, so troubleshooting load issues is left to end user to do. However, there's many linux tools and scripts that can help you figure out what was causing the load issues and when.

Tools and commands you will want to read up on and learn for basic system admin tasks and troubleshooting.

• 20 Command Line Tools to Monitor Linux Performance
• 13 Linux Performance Monitoring Tools - Part 2
• 80 Linux Monitoring Tools for SysAdmins - Server Density Blog
• Amazing ! 25 Linux Performance Monitoring Tools
• 20 Linux System Monitoring Tools Every SysAdmin Should Know
• My mysqlmymonlite.sh script can help with that mysqlmymonlite.sh Addon | Centmin Mod Community README text file has instructions for setting up a cronjob to email you reports i.e. every 10/15min or every hour.

Notes:

• Centmin Mod already installed Glances tool. It can be invoked from SSH command glances or top2. Official Glances site at nicolargo.github.io/glances/ and documentation here.

For example what's output for these commands

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top -bn1

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ps aufxw

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sar -q

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sar -r

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sar -q -f /var/log/sa/sa$(date +%d -d yesterday)

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sar -r -f /var/log/sa/sa$(date +%d -d yesterday)

for posting code you might want to use CODE tags for code How to use forum BBCODE code tags

 

Great to hear, with Linode right now you get one of 3 cpus

• Intel Xeon E5-2680v2 2.80Ghz
• Intel Xeon E5-2680v3 2.50Ghz
• Intel Xeon E5-2697v4 2.30Ghz

Intel® Product Specification Comparison

 

Depends as each generation v2, v3 etc has improved cryptographic ability for HTTPS sites. And meltdown/spectre and Kernel KPTI patch fixes mean reduced performance for all Intel servers. The older the cpu, the more performance reduction impact these KPTI/Spectre fixes have overall and remember that base frequency doesn't mean much it's turbo boost profiles that matter depending on how many cpu core/threads are in use.

E5-2697v4 probably would be the best bet these days in light of meltdown/spectre vulnerability fixes etc.

Xeon E5-2697 v4 - Intel - WikiChip Turbo boost still at 2.80Ghz will all 18 cpu cores in use.

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Turbo Frequency    Yes
3,600 MHz (1 core),
3,600 MHz (2 cores),
3,400 MHz (3 cores),
3,300 MHz (4 cores),
3,200 MHz (5 cores),
3,100 MHz (6 cores),
3,000 MHz (7 cores),
2,900 MHz (8 cores),
2,800 MHz (9 cores),
2,800 MHz (10 cores),
2,800 MHz (11 cores),
2,800 MHz (12 cores),
2,800 MHz (13 cores),
2,800 MHz (14 cores),
2,800 MHz (15 cores),
2,800 MHz (16 cores),
2,800 MHz (17 cores),
2,800 MHz (18 cores)

 

London Linode with Xeon Gold 6148 Scalables ! wow Intel® Product Specification Comparison

Xeon Gold 6148 - Intel - WikiChip

20 core turbo boost for normal work loads is 3.10Ghz, AVX2 is 2.60Ghz and AVX512 work loads at 2.20Ghz

 

Sweet here's to Linode rolling them out to all datacenters eventually. Looks like a good upgrade, double number of cores compared to E3-2680v2 10 vs 20 cores and only bump TDP from 115 watts to 150 watts and still managed larger L3 cache 27.5MB vs 25MB and faster DDR4-2666Mhz memory !

 

Yeah then it's easier to ask to be moved to another VPS node. I suppose the newer Xeon Gold based VPS host nodes would potentially have more neighbours sharing the server given a dual Xeon Gold 6148 would have 2x 20C/40T = 40 cores and 80 threads !

Would love to see Linode offer up a US$60/month 6 cpu core plan eventually

 

True though reason this forums are on Linode 8GB plan with 4 cores is mainly the solid redundant disk storage layer. and ability to clone VPS and easily migrate between data centers. Snapshot/data migrations can happen at up to 200MB/s speeds. Building out and replicating the same on a dedicated server involving expensive raid disks and faster network connectivity i.e. 10Gbps NICs all add up cost wise. Folks overlook that fact when comparing dedicated server versus VPS like Linode's offerings.

 

output for

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cat /proc/cpuinfo

 

nice something funky with flags output.. what about for

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lscpu