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Previous 30 Newer Entries Showing entries 31 to 60 of 68 Next 8 Older Entries

Displaying posts with tag: ssd (reset)

My swap space on an SSD?
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I had an interesting discussion with 2 colleagues about the possible interest of putting the swap space of a system on a SSD.

If I consider the gain in latency that an SSD brings versus a capacity disk - in the region of 100x - the solution seems obvious. Swapping - or more precisely paging - must be much faster/ with an SSD. Since RAM is expensive versus SSD, I could even be tempted to design a system with a small amount of RAM and a large amount of swap space on SSDs. In other words, I can ask myself if trying to prevent my system to page is still a good fight?

Let's try to shed some light on these questions.

Paging takes place when my system runs out of RAM because more processes are created or because existing processes requires more memory (check this


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Technical Webinars
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You want to use or to know more about Sun technologies? Join these Webinars to improve your knowledge and skills. You will be able to ask questions to Sun's experts.

  • Mercredi 10 Février : Securité pour les applications Web. Pour les startups du Web, la protection et la sécurisation de leurs applications, de leurs données, et de celles de leurs clients est un véritable facteur clé de succès.  Ce Webinar couvre les différents challenges liés à la sécurité ainsi que les solutions associées telles que l'encryption, l'authentification, les certificats, la sécurisation du stockage et le stockage à tolérance de panne, les environnements étanches. Les architectes de Sun Startup Essentials présenteront des implémentations économiques basées sur des composents standards et ouverts tel qu'Apache,

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Technical Webinars
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You want to use or to know more about Sun technologies? Join these Webinars to improve your knowledge and skills. You will be able to ask questions to Sun's experts.

  • Mercredi 10 Février : Securité pour les applications Web. Pour les startups du Web, la protection et la sécurisation de leurs applications, de leurs données, et de celles de leurs clients est un véritable facteur clé de succès.  Ce Webinar couvre les différents challenges liés à la sécurité ainsi que les solutions associées telles que l'encryption, l'authentification, les certificats, la sécurisation du stockage et le stockage à tolérance de panne, les environnements étanches. Les architectes de Sun Startup Essentials présenteront des implémentations économiques basées sur des composents standards et ouverts tel qu'Apache,

  [Read more...]
Technical Webinars
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You want to use or to know more about Sun technologies? Join these Webinars to improve your knowledge and skills. You will be able to ask questions to Sun's experts.

  • Mercredi 10 Février : Securité pour les applications Web. Pour les startups du Web, la protection et la sécurisation de leurs applications, de leurs données, et de celles de leurs clients est un véritable facteur clé de succès.  Ce Webinar couvre les différents challenges liés à la sécurité ainsi que les solutions associées telles que l'encryption, l'authentification, les certificats, la sécurisation du stockage et le stockage à tolérance de panne, les environnements étanches. Les architectes de Sun Startup Essentials présenteront des implémentations économiques basées sur des composents standards et ouverts tel qu'Apache,

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InnoDB and 4k page size benchmarks?
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Has anyone done any more work on recompiling InnoDB with 4k pages and benchmarking under SSD?

We’re building out a new DB that uses very small records (around 32-64 bytes) so reading a whole 16k for this record should have a performance difference.

I haven’t seen any benchmarks on 16k random read IOPS on the Intel SSD but my hunch is that there will be a 20-30% penalty here.

Though even if it was a 4x penalty that would still be about 9k transactions per second which is pretty good.

On a personal note I just bought a new Mac Book Pro which will be upgraded to the Intel X-25M MLC SSD.

Needless to say I’m very excited!



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SSD Vendors: Please let developers obtain extended health and # of erase cycle stats on your SSDs.
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Here’s the problem I currently have.

We’re looking at deploying the Intel X-25M MLC SSD in production.

The problem being that this drive has a lower number of erase cycles but is much cheaper. Than the Intel X-25E SLC drive.

However, in our situation we’re write once, read many. I’m 99% certain that we will not burn out these drives. We write data to disk once and it is never written again.

The problem is that I can’t be 100% sure that this is the case. There is btree flushing, and binary log issues that I’m worried about…

What would be really nice is an API (SMART?) that I can enumerate the erase blocks on the drive, determine the max erase cycles, and read

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Storage for your Database
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Save the date - October 14th, 3pm Paris & Berlin, 2pm London, 4pm Jerusalem  -  for this free live webinar where you'll have a chance to ask questions to our experts.

This webinar focuses on how ZFS, SSDs and the Open Storage line of products from Sun are changing the rules in the database storage industry. You will learn how to increase data security, scalability, and reduce the price/performance ratio with these technologies. This webinar includes ZFS best practises for databases backup and performance.

To register, click here.

SSD Market Continues to Heat Up
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I had originally posted this on the 16th of September, but I had been changing hosting providers and such and it has managed to drop through the cracks.  So, if you didn’t see it before here it is..

I have long held the opinon that SSD (Solid State Disk) drives are going to be a major part of the database future. I just checked and I wrote a blog posting about them two years ago. I am not alone in this opinion.  It has long been realized that both I/O access speed and throughput increases have not kept pace with the increases in CPU power and the steadily decreasing cost of RAM. Storage space has increased, but both access speed and throughput performance have only had marginal increases in performance.

Solid state disks have long held the promise of lowered access speeds, especially when it comes to random access.  Even so, prices for SSD drives

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Recording: "ZFS + SSD tuning for databases"
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Just in case you missed the live event, we have a recording of the ZFS + SSD for databases webcast Listen Now

You can also download the slides from Slide share. Download Slides

ZFS & SSDs. Database Performance tuning webcast
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Over the last month I have been working on a ZFS Tuning for Databases presentation. I'll be presenting it live tomorrow 8/26/09 at 8 AM PST.

This based on a lot of work done at Sun as well as in the community. With the massive adoption of Solid State Devices (SSDs) (thank you iPOD) the storage market just got a whole lot more interesting. Incorporating SSDs into a ZFS pool is a breeze. This presentation is meant to help you get the best out of the ZFS + SSD combination for databases. We look into Postgres, MySQL and Oracle. I also provide a quick into into Sun's unified storage 7000 series systems.

If you are interested do Register Now

RethinkDB all the rage today
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RethinkDB is all the rage today, as its a Y Combinator funded startup, which also launched a developer pre-alpha today. So what is RethinkDB you ask? Yet-another-MySQL-storage-engine, that’s what. But this time, its tuned for solid-state drives (SSDs), which also happen to be all the rage these days.

Anyway, check them out more, and the materials currently tell me that they’re using append-only algorithms, which allow for live schema changes and hot backups, with instantaneous recovery from power failure. Those are just some of the exciting bits.

What didn’t excite me so much was the fact that you were only getting 32-bit or 64-bit Linux binaries, built against MySQL 5.1.31 and you’ll just

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Tables on SSD, Redo/Binlog/SYSTEM-tablespace on HDD
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I recently did a disk bound DBT-2 benchmarking on SSD/HDD (MySQL 5.4.0, InnoDB). Now I'm pretty confident that storing tables on SSD, redo/Binlog/SYSTEM-tablespace on HDD will be one of the best practices for the time being.

This post is a detailed benchmarking report.
(This post is very long and focusing on InnoDB only. If you are familiar with HDD/SSD/InnoDB architecture and understand what my blog title means, skipping section 1 (general theory) then reading from section 2 (benchmarking results) would be fine. )

1. General Theory of HDD, SSD and InnoDB

SSD is often called as a disruptive storage technology. Currently storage capacity is much smaller and unit price is much higher than HDD, but the situation is very rapidly changing. In the near future many people will use SSD instead of HDD.

From DBA's standpoint, you








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Running your Oracle database on internal Solid State Disks : a good idea ?
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Scaling MySQL and ZFS on T5440




Solid State Disks : a 2009 fashion

This technology is not new : it originates in 1874 when a German physicist named Karl Braun (pictured above) discovered that he could rectify alternating current with a point-contact semiconductor. Three years later, he had built the first CRT oscilloscope and four years later, he had built the first prototype of a Cat's whisker diode, later optimized by G. Marconi and G. Pickard. In 1909, K. Braun shared the Nobel Prize for physics with G. Marconi.

The




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Running your Oracle database on internal Solid State Disks : a good idea ?
Employee +0 Vote Up -0Vote Down
Scaling MySQL and ZFS on T5440




Solid State Disks : a 2009 fashion

This technology is not new : it originates in 1874 when a German physicist named Karl Braun (pictured above) discovered that he could rectify alternating current with a point-contact semiconductor. Three years later, he had built the first CRT oscilloscope and four years later, he had built the first prototype of a Cat's whisker diode, later optimized by G. Marconi and G. Pickard. In 1909, K. Braun shared the Nobel Prize for physics with G. Marconi.

The




  [Read more...]
Running your Oracle database on internal Solid State Disks : a good idea ?
Employee +0 Vote Up -0Vote Down
Scaling MySQL and ZFS on T5440




Solid State Disks : a 2009 fashion

This technology is not new : it originates in 1874 when a German physicist named Karl Braun (pictured above) discovered that he could rectify alternating current with a point-contact semiconductor. Three years later, he had built the first CRT oscilloscope and four years later, he had built the first prototype of a Cat's whisker diode, later optimized by G. Marconi and G. Pickard. In 1909, K. Braun shared the Nobel Prize for physics with G. Marconi.

The




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Big Data: SSD's, R, and Linked Data Streams
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The Solid State Storage Revolution: If you haven't seen it, I recommend you watch Andy Bechtolsheim's keynote at the recent Mysqlconf. We covered SSD's in our just published report on Big Data management technologies. Since then, we've gotten additional signals from our network of alpha geeks and our interest in them remains high.


R and Linked Data Streams: I had a chance to visit with Dataspora founder and blogger Mike Driscoll, an enthusiastic advocate for the use of the open source statistical


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Measuring HD latency in ways relevant to MySQL
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As I described yesterday, Open Query is doing some tests on SSDs and other devices pretending to be harddisks (SANs, battery-backed RAID controllers, etc). To aid this, I wrote a small tool to test the different kind of I/O operations MySQL would/could do, which is not quite the same as what other general purpose apps would do, and also not what other test tools measure. For instance, it tries Direct I/O as well as fsync() after each write, and also it a range of different I/O block sizes.

In a nutshell, it’s aimed to do what MySQL does, without MySQL! Testing lots of different setups for this particular purpose (even with fantastic tools like MySQL Sandbox) is a complete pest, and changing InnoDB page size requires a recompile. While Percona has tried a larger page size in the past and decided it wasn’t worth it (the default

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MySQL SSD experiments and a request
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Open Query too is exploring utilising SSDs in a MySQL infrastructure, but we wouldn’t be us if we didn’t also try some alternative perspective on it. Right now we’re running some comparative tests against various spinning HD setups in the same box, using the same controller, so we’re looking for differences rather than absolute speed.

The results so far are interesting, but the selection of SSDs we have available is limited (never enough toys!) So, a request: do you have an SSD, it’d be great if we could run our test tool on it for a bit. It won’t take long, but naturally the box shouldn’t be used for something else while the test is running. We can either log in remotely, or exchange code and results over email. Simply contact us through our site’s contact form, and we’ll sort things out!

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SSDs for Performance Engineers
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Why should a performance engineer care about SSDs

There has a been lot of buzz regarding SSDs lately. SSDs change the dynamics of the IO subsystem. You are no longer limited by rotational latency and vibration effects. For a performance engineer this has many implications. Since performance engineers care mostly about performance, the first thought that comes to mind is "Are we going to see a big impact in benchmarks?".

The answer is really easy for IO bound benchmarks. How about CPU bound benchmarks? Many database benchmarks are CPU limited. Does a faster disk really change anything?

So what does an SSD really give you?

  • Faster IOPS
  • Decreased Latency for an IO

Faster IOPS

SSD's have a huge random IO capability. During a recent experiment with a SSD, I got around 12,000 random IO operations per second! I have seen

  [Read more...]
SSDs for Performance Engineers
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Why should a performance engineer care about SSDs

There has a been lot of buzz regarding SSDs lately. SSDs change the dynamics of the IO subsystem. You are no longer limited by rotational latency and vibration effects. For a performance engineer this has many implications. Since performance engineers care mostly about performance, the first thought that comes to mind is "Are we going to see a big impact in benchmarks?".

The answer is really easy for IO bound benchmarks. How about CPU bound benchmarks? Many database benchmarks are CPU limited. Does a faster disk really change anything?

So what does an SSD really give you?

  • Faster IOPS
  • Decreased Latency for an IO

Faster IOPS

SSD's have a huge random IO capability. During a recent experiment with a SSD, I got around 12,000 random IO operations per second! I have

  [Read more...]
SSDs for Performance Engineers
Employee +0 Vote Up -0Vote Down
Why should a performance engineer care about SSDs

There has a been lot of buzz regarding SSDs lately. SSDs change the dynamics of the IO subsystem. You are no longer limited by rotational latency and vibration effects. For a performance engineer this has many implications. Since performance engineers care mostly about performance, the first thought that comes to mind is "Are we going to see a big impact in benchmarks?".

The answer is really easy for IO bound benchmarks. How about CPU bound benchmarks? Many database benchmarks are CPU limited. Does a faster disk really change anything?

So what does an SSD really give you?

  • Faster IOPS
  • Decreased Latency for an IO

Faster IOPS

SSD's have a huge random IO capability. During a recent experiment with a SSD, I got around 12,000 random IO operations per second! I have

  [Read more...]
Great things afoot in the MySQL community
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tl;dr: The MySQL community rocks. Percona, XtraDB, Drizzle, SSD storage, InnoDB IO scalability challenges.

For anyone who lives and dies by MySQL and InnoDB, things are finally starting to heat up and get interesting. I’ve been banging the “MySQL/InnoDB scales poorly” drums for years now, and despite having paid Enterprise licenses, I haven’t been able to get anywhere. I was pretty excited when Sun

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Thoughts on Fishworks, SSD, flash and high density storage.
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The Sun Fishworks guys were nice enough to invite me for a demo of their new 7000 series storage device.

We bang the heck out of our IO systems here at Spinn3r so having more options is always welcome.

Bryan Cantrill, one of the original DTrace developers, worked on this bad boy so there’s obviously going to be an emphasis on performance analysis.

This is one of the main competitive advantages of the 7000 series.

Out of the box you have a full admin console for performance tuning. It doesn’t stop at just raw IOs because they’ve instrumented it with a bunch of dtrace scripts.

You can view IOPS per file, CPU, make runtime tuning and configuration


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Impressive numbers of Next Gen MySQL Cluster
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I had a very interesting conversation on the phone with Jonas
Oreland today (he also blogged about it on his blog at
http://jonasoreland.blogspot.com).

There is a lot of interesting features coming up in MySQL Cluster
version 6.4. Online Add Node is one of those, which can be done
without any downtime and even with almost no additional memory
needed other than the memory in the new machines added into the
cluster. This is a feature I started thinking almost 10 years ago
so it's nice to see the fourth version of the solution actually be
implemented and it's a really neat solution to the problem,
definitely fitting the word innovative.

The next interesting feature is to use a more efficient protocol
for handling large operations towards the data nodes.













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... The Best AppServer, New MQ Site, MySQL in NB, SocialSite and REST, Compliance Manager, OpenStorage and SSDs
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A compilation of today's news of interest:

Any Best poll is always subjective in one way or another, so here are two more :-) First What's the Best AppServer - with several references to GlassFish. The second is a question from a prospective GF user that elicited a Very Nice Testimonial... which is a good time for a call for Adoption Stories; if you have any, drop us a mail at stories at sun dot com.

The OpenMQ community page sports a

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Blueprints Wiki - Best Practices on ZFS, MySQL, Hadoop, and much more
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I just bumped into the Sun BluePrints Wiki and I think it is worth a visit. It is a companion to the BluePrints Blog and part of the move towards Self-Published Content at Sun, which increases agility and responsiveness to user's needs.

The Recent Content page lists chronologically the latest changes. The more recent entries are created in Wiki format, while the earlier ones are PDF attachments.

Some of the documents that caught my attention include:

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Anything But a Flash in the Pan
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There are only two kinds of storage devices - those that have failed, and those that are about to fail. That's the view most datacenters have about the traditionally mechanical devices pejoratively referred to as "spinning rust." All disk drives fail, cheap drives fail faster.

If the average time to fail is five years, you and your laptop can make do with the occasional backup. But when an average enterprise has 100, or 1,000, or increasingly 10,000 or 100,000 individual disk drives, failure is a daily, if not hourly occurrence. Mechanical devices fail.

And with failure comes the potential for losing data - using commodity disks to save your boss $500,000 does her no good if she's fined $50,000,000 for violating data retention regulations. Stock transactions, medical images or feature


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Kickfire is not SSD-based
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Just a quick note: Kickfire is not based on SSD (solid-state device) hard drives. Their old website says “SQL goes solid state” but that just means SQL in hardware, not SSD.

When I was a child, we had a Sears Lady Kenmore clothes washing machine that boasted “solid-state circuits” on the panel, in flowery script writing. It was not based on SSD, either.

Finally, I am not on the Kickfire payroll. I’m not getting anything from working with them, except perhaps the fun of being in their labs while they’re still in stealth mode. It’s a harder balance than you might think, writing about a product that I don’t know about and am excited to learn about, and sounding objective. If I’m sounding like a fanboy, I don’t mean to. Trust me, if it’s vaporware you’ll

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RAM vs SSD Based Databases
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A
MemoRight GT vs Mtron SSDs
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A
Previous 30 Newer Entries Showing entries 31 to 60 of 68 Next 8 Older Entries

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