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2016 Dec 05
0
Huge write amplification with thin provisioned logical volumes
...y provisioned
logical volumes and I wondered if anyone can explain why it happens and if
and how can be fixed. The behavior is the same on Centos 6.8 and Centos
7.2.
I have a NVME card (Intel DC P3600 -2 TB) on which I create a thinly
provisioned logical volume:
pvcreate /dev/nvme0n1
vgcreate vgg /dev/nvme0n1
lvcreate -l100%FREE -T vgg/thinpool
lvcreate -V40000M -T vgg/thinpool -n brick1
mkfs.xfs /dev/vgg/brick1
If I run a write test ( dd if=/dev/zero of=./zero.img bs=4k count=100000
oflag=dsync ) I see in iotop that the actual disk write is 30 times the
amount of data that I'm actu...
2000 Jul 10
1
The OGG Extension...(fwd)
...SSAGE-----
Hash: SHA1
On Mon, 10 Jul 2000, Anthony DeRobertis wrote:
> On Sun, 9 Jul 2000, Frank Krieger wrote:
>
> > I have to agree. Face it or not, desktop is Windows. Windows will need two
> > extensions.
> >
> > .ogg for audio - It's already here
> > .vgg for video - Or whatever moves you.
>
> And prey tell, why does QuickTime work so well with one extension?
That's easy... QuickTime is a bunch of proprietary cr*p, and you can only
play it with their players (which naturally support all encoding types
they have) You can't play a quic...