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AWS still using XEN?
I heard that they migrated to KVM-based but seem they still using XEN for Lightsail
Just spin up an instance ($10) in Singapore and here it is:
Region: Asia https://bench.monster v.1.5.6 2020-06-21
Usage : curl -LsO bench.monster/speedtest.sh; bash speedtest.sh -Asia
---------------------------------------------------------------------------
OS : Ubuntu 20.04 LTS (64 Bit)
Virt/Kernel : Xen / 5.4.0-1018-aws
CPU Model : Intel(R) Xeon(R) CPU E5-2686 v4 @ 2.30GHz
CPU Cores : 1 @ 2300.065 MHz x86_64 46080 KB Cache
CPU Flags : AES-NI Enabled & VM-x/AMD-V Disabled
Load Average : 0.56, 0.23, 0.14
Total Space : 59G (1.6G ~3% used)
Total RAM : 1985 MB (157 MB + 987 MB Buff in use)
Total SWAP : 0 MB (0 MB in use)
Uptime : 0 days 0:21
---------------------------------------------------------------------------
ASN & ISP : AS16509, Amazon Technologies Inc.
Organization : AWS EC2 (ap-southeast-1)
Location : Singapore, Singapore / SG
Region :
---------------------------------------------------------------------------
## Geekbench v4 CPU Benchmark:
Single Core : 3332 (VERY GOOD)
Multi Core : 3178
## IO Test
CPU Speed:
bzip2 : 96.4 MB/s
sha256 : 153 MB/s
md5sum : 411 MB/s
RAM Speed:
Avg. write : 1945.6 MB/s
Avg. read : 5154.1 MB/s
Disk Speed:
1st run : 67.2 MB/s
2nd run : 64.5 MB/s
3rd run : 64.3 MB/s
-----------------------
Average : 65.3 MB/s
## Asia Speedtest.net
Location Upload Download Ping
---------------------------------------------------------------------------
Nearby 901.11 Mbit/s 911.70 Mbit/s 2.588 ms
---------------------------------------------------------------------------
India, New Delhi (Weebo) 239.11 Mbit/s 88.20 Mbit/s 67.359 ms
India, Mumbai (SevenStar) 209.71 Mbit/s 71.08 Mbit/s 66.221 ms
India, Bengaluru (I-ON) 244.24 Mbit/s 78.43 Mbit/s 41.231 ms
Sri Lanka, Colombo (Telecom PLC) 289.74 Mbit/s 272.73 Mbit/s 34.332 ms
Pakistan, Islamabad (Telenor) 21.08 Mbit/s 83.43 Mbit/s 107.053 ms
Mongolia, Ulaanbaatar (Mobicom) 115.49 Mbit/s 47.77 Mbit/s 86.169 ms
Bangladesh, Dhaka (Skytel) 183.26 Mbit/s 76.69 Mbit/s 49.019 ms
Bhutan, Thimphu (Bhutan Telecom) 39.26 Mbit/s 14.55 Mbit/s 85.748 ms
Myanmar, Mandalay (Ooredoo) 262.04 Mbit/s 190.67 Mbit/s 50.475 ms
Laos, Vientaine (Mangkone) 146.73 Mbit/s 159.34 Mbit/s 40.496 ms
Thailand, Bangkok (CAT Telecom) 369.89 Mbit/s 146.99 Mbit/s 26.373 ms
Cambodia, Phnom Penh (Smart) 316.39 Mbit/s 155.55 Mbit/s 39.953 ms
Vietnam, Hanoi (Viettel) 331.92 Mbit/s 83.94 Mbit/s 35.165 ms
Malaysia, Kuala Lumpur (Extreme) 551.89 Mbit/s 158.91 Mbit/s 12.474 ms
Singapore (PT FirstMedia) 876.10 Mbit/s 919.16 Mbit/s 0.962 ms
Indonesia, Jakarta (Desnet) 308.24 Mbit/s 481.79 Mbit/s 13.498 ms
Philippines, Manila (Globe Tel) 113.38 Mbit/s 80.72 Mbit/s 39.914 ms
Hong Kong (fdcservers) 325.41 Mbit/s 118.58 Mbit/s 36.582 ms
Taiwan, Taipei (TAIFO) 168.33 Mbit/s 42.78 Mbit/s 81.855 ms
Japan, Tsukuba (SoftEther) 229.54 Mbit/s 100.16 Mbit/s 69.491 ms
---------------------------------------------------------------------------
Timestamp : 2021-10-02 20:43:11 GMT
Comments
I always thought it was KVM
KVM here, on Lightsail Seoul
Is there any big difference between Xen and KVM?
I have one in SG too.
I have same question
If it's Xen HVM and not Xen PV, I suppose there's barely any difference. I can't recall anybody complained about performance because of virt type, so from this point it should be comparable.
AWS were heavily invested in Xen for a long time and some of their old instance types (I believe C4 and below) are still powered by Xen. They moved to KVM in the late 2010s but had altered it to make it more similar to Xen.
Lightsail tends to use the older types of instances in regions that are a bit older/they have older instances free - so that might explain the Xen. I think Lightsail is a Kimsufi/SYS style idea -- flog the older hardware that's already had a lot of money made out of it.
Asked and answered by OP himself.
Thanks, make sense, Lightsail is one of the best lowend for Asia location ( because high price for IPs & bandwidth in Asia)
It's not the same Xen that cheapo SolusVM provider use. AWS has invested heavily in building on top of it and building custom hardware for it.