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Linux Server ops
Restrict port by GeoIP
https://www.seenlyst.com/blog/geo-blocking-ufw-iptables/
https://blog.reverside.ch/UFW-GeoIP-and-how-to-get-there/
Digitalocean
Basic - 2vCPU / 2Gb / SSD
https://cylab.be/blog/330/benchmark-linux-systems-with-sysbench?accept-cookies=1
sysbench CPU Single-thread
CPU speed:
events per second: 924.48
General statistics:
total time: 10.0006s
total number of events: 9247
Latency (ms):
min: 0.97
avg: 1.08
max: 1.70
95th percentile: 1.34
sum: 9990.05
Threads fairness:
events (avg/stddev): 9247.0000/0.00
execution time (avg/stddev): 9.9901/0.00
sysbench CPU Multi-thread
CPU speed:
events per second: 1778.18
General statistics:
total time: 10.0008s
total number of events: 17787
Latency (ms):
min: 0.97
avg: 1.12
max: 3.35
95th percentile: 1.37
sum: 19973.12
Threads fairness:
events (avg/stddev): 8893.5000/61.50
execution time (avg/stddev): 9.9866/0.00
sysbench Memory
Total operations: 33993717 (3398575.78 per second)
33196.99 MiB transferred (3318.92 MiB/sec)
General statistics:
total time: 10.0003s
total number of events: 33993717
Latency (ms):
min: 0.00
avg: 0.00
max: 229.62
95th percentile: 0.00
sum: 4694.85
Threads fairness:
events (avg/stddev): 33993717.0000/0.00
execution time (avg/stddev): 4.6949/0.00
sysbench Storage-Random Read 4k
Throughput:
read, MiB/s: 21.05
written, MiB/s: 0.00
sysbench Storage-Random Write 4k
Throughput:
read, MiB/s: 0.00
written, MiB/s: 126.66
sysbench Storage-Seq Read 1M
Throughput:
read, MiB/s: 393.88
written, MiB/s: 0.00
sysbench Storage-Seq Write 1M
Throughput:
read, MiB/s: 0.00
written, MiB/s: 463.07
Basic - Intel 2vCPU / 2Gb / NVME
https://cylab.be/blog/330/benchmark-linux-systems-with-sysbench?accept-cookies=1
sysbench CPU single-thread
CPU speed:
events per second: 2102.17
General statistics:
total time: 10.0002s
total number of events: 21027
Latency (ms):
min: 0.46
avg: 0.48
max: 0.92
95th percentile: 0.49
sum: 9990.58
Threads fairness:
events (avg/stddev): 21027.0000/0.00
execution time (avg/stddev): 9.9906/0.00
sysbench CPU Multi-thread
CPU speed:
events per second: 4174.63
General statistics:
total time: 10.0003s
total number of events: 41757
Latency (ms):
min: 0.46
avg: 0.48
max: 4.63
95th percentile: 0.50
sum: 19972.28
Threads fairness:
events (avg/stddev): 20878.5000/19.50
execution time (avg/stddev): 9.9861/0.00
sysbench memory
Total operations: 43904392 (4389328.76 per second)
42875.38 MiB transferred (4286.45 MiB/sec)
General statistics:
total time: 10.0002s
total number of events: 43904392
Latency (ms):
min: 0.00
avg: 0.00
max: 0.15
95th percentile: 0.00
sum: 4116.05
Threads fairness:
events (avg/stddev): 43904392.0000/0.00
execution time (avg/stddev): 4.1160/0.00
sysbench Storage - Random Read 4k
Throughput:
read, MiB/s: 29.46
written, MiB/s: 0.00
sysbench Storage - Random Write 4k
Throughput:
read, MiB/s: 0.00
written, MiB/s: 291.43
sysbench Storage - Seq Read 1M
Throughput:
read, MiB/s: 1654.19
written, MiB/s: 0.00
sysbench Storage - Seq Write 1M
Throughput:
read, MiB/s: 0.00
written, MiB/s: 1302.48
CPanel
Cron job to remove emails
find /home/jwcorner/mail/jwcorner.com/noreply/ -type d \( -name cur -o -name new \) -exec find {} -mtime +1 -type f -delete \;
tech_public/tp_linuxserver.txt · Last modified: by jasonwch (text)
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