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Test the disk I/O of your VPS
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Prometeus.net
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 3.76369 s, 285 MB/sOpenVZ.IO
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 7.64519 s, 140 MB/sCrissic.net
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 10.531 s, 102 MB/sVery happy with all three services. All are being used to host several sites. So these are not idle and fresh-install numbers.
Iniz (NL-SSD-1024):
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 1.15774 s, 927 MB/sOur new NL SATA node, 10 x 4TB
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync; unlink test16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 0.878097 s, 1.2 GB/s
2GB SSD / 2 CPU @ DigitalOcean
San Francisco Location.
UnixBench score: 1961.5
I/O rate: 183.0 MB/second
Bandwidth rate: 54.5 MB/second
http://serverbear.com/benchmark/2013/08/21/sUOMONVlyv2Hwr0u
This seems to work better for SSD Cached
dd if=/dev/zero of=test bs=8k count=128k conv=fdatasync; unlink test
LSI Cachecade wont cache blocks larger than 8K I think.
Maybe in e-peen land, but in the real world, anything over 30MB/s is perfectly fine.
I completely agree, i notice no lag above 30 MB/s, at 20 it does at time and at high db activity (high for me, moderate for others). At 10 is visible even at apt-get dist-upgrade... Below that, i only had at home on CF card
Or on Host1Free, but even then my asterisk install worked ok. So I guess DD is not the be all and end all :-)
Not bad for five bucks a month
50 cents a month :P
From who? O_o
Dallas servers but that is 50 Euro cents, not dollar cents so i cheated a bit
Wow that's faster than my ramdisk!
Some people managed 1.9:
http://lowendtalk.com/discussion/14345/accepting-the-challenge-xen-ssd-from-12-eur-year-improved-50cents
prometeus dallas server
65536+0 records in
65536+0 records out
1073741824 bytes (1.1 GB) copied, 0.90207 seconds, 1.2 GB/s
Blue3 Bluevm
65536+0 records in
65536+0 records out
1073741824 bytes (1.1 GB) copied, 20.4446 s, 52.5 MB/s
SSDvirt SSD KVM..
dd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 2.31713 s, 463 MB/sdd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 1.33095 s, 807 MB/sFliphost SSD KVM..
dd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 1.73121 s, 620 MB/sdd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 1.28463 s, 836 MB/sRamnode OVZ cached
dd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 0.933077 s, 1.2 GB/son fliphost and ssdvirt the first must be the actual performance and second results is the cache kicking in..
Volumedrive Dedi..
single drive Samsung:
dd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 8.1952 s, 131 MB/sDual drives Raid0 Seagates:
( about 80 mb/s in single drive with no raid)
dd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 7.24603 s, 148 MB/sRamdisk DDR3 1066Mhz:
dd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 1.15131 s, 933 MB/sdirectSpace SSD, yearly vps
@earl - 1073741824 bytes (1.1 GB) copied, 0.933077 s, 1.2 GB/s <--- What node is that?...
I'm on ATLCVZ3.. why??
My Prometeus Dallas plan started at about 1.7GB/s when I first signed up but has gone down a lot over time to what seems a bit low for SSD (not that it's slow, still faster than any spinny disk plan I have):
OVerZold:
VPSDime:
Hostigation:
High Speed Web:
BlueVM Zurich:
My Prometeus Dallas plan started at about 1.7GB/s when I first signed up but has gone down a lot over time to what seems a bit low for SSD (not that it's slow, still faster than any spinning disk plan I have):
OVerZold:
VPSDime:
Hostigation:
High Speed Web:
BlueVM Zurich:
@Dylan, if you are on a very low plan, you need to tweak sysctl because it gets out of ram.
It may work if the VPS is empty (I see you have a xen plan), but as memory fills the speed will degrade.
This does not mean the disk is slower it means the dd itself has issues due to low ram available. I will double your ram temporarely, reboot and try again
DirectSpace must have forgotten to move me to SSD. I'm still on Xeon 5110 instead of the promised Dual Xeon E5-2630L. Anyway, will let it expire next month.
Some more new servers I have:
Datashack AMD Phenom II x6 1045t; 4x500GB RAID10:
Prometeus Low End VPS - VZ3:
WeLoveServers UK:
Backupsy:
Crissic Solutions, famous $15/year plan. Few test outputs ranging 20~40 MB/s.
Do you know what brand of drives?
@Maounique
The try above was on an empty VPS, but I just realized something was different from when I first got it: I was using CentOS this time and Ubuntu before.
On a new Ubuntu 12.04 install it gets about 632 MB/s, on Debian 7 980 MB\s, and going back to CentOS 6 358 MB/s. None quite as fast as when I first signed up but apparently there are some very different default sysctl settings!
It's a dmraid, I'm not sure how to check...
@earl, I thought I had tried proper smartctl... Apparently not.
dmidecode |more