Displaying 20 results from an estimated 4000 matches similar to: "OCZ Vertex 2 Pro performance numbers"
2010 May 24
16
questions about zil
I recently got a new SSD (ocz vertex LE 50gb)
It seems to work really well as a ZIL performance wise. My question is, how
safe is it? I know it doesn''t have a supercap so lets'' say dataloss
occurs....is it just dataloss or is it pool loss?
also, does the fact that i have a UPS matter?
the numbers i''m seeing are really nice....these are some nfs tar times
before
2010 Jun 19
6
does sharing an SSD as slog and l2arc reduces its life span?
Hi,
I don''t know if it''s already been discussed here, but while
thinking about using the OCZ Vertex 2 Pro SSD (which according
to spec page has supercaps built in) as a shared slog and L2ARC
device it stroke me that this might not be a such a good idea.
Because this SSD is MLC based, write cycles are an issue here,
though I can''t find any number in their spec.
Why do I
2013 Jul 09
2
OCZ Vertex4 quirks
Same as its brothers/sisters, it's optimized for 4 KB blocks.
/*
* OCZ Vertex 4 SSDs
* 4k optimized
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "OCZ_VERTEX4*", "*"},
/*quirks/DA_Q_4K
Borja.
2010 Oct 06
14
Bursty writes - why?
I have a 24 x 1TB system being used as an NFS file server. Seagate SAS disks connected via an LSI 9211-8i SAS controller, disk layout 2 x 11 disk RAIDZ2 + 2 spares. I am using 2 x DDR Drive X1s as the ZIL. When we write anything to it, the writes are always very bursty like this:
ool 488K 20.0T 0 0 0 0
xpool 488K 20.0T 0 0 0 0
xpool
2012 May 22
3
SSD erase state and reducing SSD wear
I''ve got two recent examples of SSDs. Their pristine state from the
manufacturer shows:
Device Model: OCZ-VERTEX3
# hexdump -C /dev/sdd
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
1bf2976000
Device Model: OCZ VERTEX PLUS
(OCZ VERTEX 2E)
# hexdump -C /dev/sdd
00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
|................|
*
2010 Feb 12
13
SSD and ZFS
Hi all,
just after sending a message to sunmanagers I realized that my question
should rather have gone here. So sunmanagers please excus ethe double
post:
I have inherited a X4140 (8 SAS slots) and have just setup the system
with Solaris 10 09. I first setup the system on a mirrored pool over
the first two disks
pool: rpool
state: ONLINE
scrub: none requested
config:
NAME
2010 Jun 12
5
program in Wine doesnt see SATA solid state drive
I have a 50 gig OCZ Vertex LE drive that needs a firmware update.
When I run the Windows only flash program in wine it doesnt see the SATA ssd drive it needs to flash.
I have booted off another hard disk.
I need administrator privileges to see the drive so I config'd wine for win98.
I also tried to manually add the drive in wine config by adding the /media/xxxx path and also manually
2009 Apr 11
17
Supermicro SAS/SATA controllers?
The standard controller that has been recommended in the past is the
AOC-SAT2-MV8 - an 8 port with a marvel chipset. There have been several
mentions of LSI based controllers on the mailing lists and I''m wondering
about them.
One obvious difference is that the Marvel contoller is PCI-X and the LSI
controllers are PCI-E.
Supermicro have several LSI controllers. AOC-USASLP-L8i with the
2012 Oct 01
3
Best way to measure performance of ZIL
Hi all,
I currently have a OCZ Vertex 4 SSD as a ZIL device and am well aware of
their exaggerated claims of sustained performance. I was thinking about
getting a DRAM based ZIL accelerator such as Christopher George''s DDRDive,
one of the STEC products, etc. Of course the key question i''m trying to
answer is: is the price premium worth it?
--- What is the (average/min/max)
2011 Mar 01
14
Good SLOG devices?
Hi
I''m running OpenSolaris 148 on a few boxes, and newer boxes are getting installed as we speak. What would you suggest for a good SLOG device? It seems some new PCI-E-based ones are hitting the market, but will those require special drivers? Cost is obviously alsoo an issue here....
Vennlige hilsener / Best regards
roy
--
Roy Sigurd Karlsbakk
(+47) 97542685
roy at karlsbakk.net
2012 Jul 31
1
Subgraph isomorphism using vertex labels
Hi all,
I want to find all the mappings of one graph in another graph, based on
their vertex labels
Is there any way to do this in igraph based on vertex labels.
(as far as i know Igraph allows the subgraph isomorphism based only on
vertex and edge colors)
Eg:
graph 1:
x(1) x(2)
x(2) y(3)
y(4) x(1)
z(5) x(2)
graph 2:
x(1) y(2)
# the brackets contain the corresponding vertex ids
i would like my
2008 Mar 05
4
vertex labels in igraph from adjacency matrix
I am getting some unexpected results from some functions of igraph and
it is possible that I am misinterpreting the vertex numbers. Eg., the
max betweenness measure seems to be from a vertex that is not connected
to a single other vertex. Below if my code snippet:
require(igraph)
my.graph <- graph.adjacency(adjmatrix = my.adj.matrix, mode=c("undirected"))
most.between.vert <-
2010 Sep 27
1
Modify the vertex label
Dear r-help,
I create a graph of my baysian network. I use the package igraph. The names
of vertex are within the circle, I would leave them outside the circle?
> E(g)$color <- "black"
> tkplot(g, ,vertex.label=names,layout=layout.kamada.kawai,
edge.color=E(g)$color)
Best Regards
[[alternative HTML version deleted]]
2012 Aug 15
3
per-vertex statistics of edge weights
I have a graph with edge and vertex weights, stored in two data frames:
--8<---------------cut here---------------start------------->8---
vertices <- data.frame(vertex=c("a","b","c","d"),weight=c(1,2,1,3))
edges <-
2008 Feb 15
38
Performance with Sun StorageTek 2540
Under Solaris 10 on a 4 core Sun Ultra 40 with 20GB RAM, I am setting
up a Sun StorageTek 2540 with 12 300GB 15K RPM SAS drives and
connected via load-shared 4Gbit FC links. This week I have tried many
different configurations, using firmware managed RAID, ZFS managed
RAID, and with the controller cache enabled or disabled.
My objective is to obtain the best single-file write performance.
2010 Aug 03
2
When is the L2ARC refreshed if on a separate drive?
I''m running a mirrored pair of 2 TB SATA drives as my data storage drives on my home workstation, a Core i7-based machine with 10 GB of RAM. I recently added a sandforce-based 60 GB SSD (OCZ Vertex 2, NOT the pro version) as an L2ARC to the single mirrored pair. I''m running B134, with ZFS pool version 22, with dedup enabled. If I understand correctly, the dedup table should be in
2009 Dec 07
1
igraph plot - vertex colors
Hi everyone,
I have successfully created and analyzed my network data. I am new to R, and Network Analysis too, but I want to color my vertex based on some of the centrality measures calculated.
Can someone point me in the right direction? Again, I am new to R, but given how powerful R appears to be, I figure this is probably pretty easy to do, I just wish I could figure it out.
Many thanks
2009 Dec 27
2
[Bug 25806] New: NV40 vertex corruption (kernel BO deletion too early?)
http://bugs.freedesktop.org/show_bug.cgi?id=25806
Summary: NV40 vertex corruption (kernel BO deletion too early?)
Product: Mesa
Version: git
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/nouveau
AssignedTo: nouveau at lists.freedesktop.org
2015 Aug 24
4
[PATCH] nv50: avoid using inline vertex data submit when gl_VertexID is used
The hardware only generates vertexid when vertices come from a VBO. This
fixes:
vertexid-drawelements
vertexid-drawarrays
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: "11.0" <mesa-stable at lists.freedesktop.org>
---
src/gallium/drivers/nouveau/nv50/nv50_program.c | 1 +
src/gallium/drivers/nouveau/nv50/nv50_program.h | 1 +
2010 Jan 11
1
Solving graph theory problems with R ? (minimum vertex cover)
I just realized (after many discussion with friends), that I might need to
solve a (classical) graph theory problem with R.
My specific problem is called:
Minimum vertex cover <http://en.wikipedia.org/wiki/Vertex_cover#Definition> for
a hypergraph <http://en.wikipedia.org/wiki/Hypergraph> (Please see the links
for a formal explanation, also with some pictures)
Which is another way of