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HP P800 Smart Array Performance

I had a chance to test HP Smart Array P800 SAS RAID controller with HP Proliant DL380 G5 server with the following configurations:

  • Dual Quad Core 2.5Ghz
  • 32-GB RAM
  • P800 Smart array with SAS interface
    • 25 disks, 10K RPM, 146G each
    • 512M cache
    • Battery backed

Here is the sysbench fileio random write performance numbers  for RAID-10 with the following …

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MEM with missing Agents?

You could set this up simply by adding the no_proxy option to the .curlrc file of the MEM  user to make the change permanent. Remember that to turn off the proxy for all connections, you would use:

$ setenv  no_proxy  '\*'

MEM with missing Agents?

You could set this up simply by adding the no_proxy option to the .curlrc file of the MEM  user to make the change permanent. Remember that to turn off the proxy for all connections, you would use:

$ setenv  no_proxy  '\*'

Memcached 1.2.7 and 1.3.3

original post

... and this is my usual plea to those mysql/web/industrial folks to try out the latest code. Help us on our quest to scale the crap out of all of your stuff. :)

Find us on the mailing list, on #memcached on freenode, or on twitter as dormando, dlsspy, tmaesaka, and trondn. :) All others are fakers.

---

Two new memcached releases are available today.

Stable …

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Memcached 1.2.7 and 1.3.3

original post

... and this is my usual plea to those mysql/web/industrial folks to try out the latest code. Help us on our quest to scale the crap out of all of your stuff. :)

Find us on the mailing list, on #memcached on freenode, or on twitter as dormando, dlsspy, tmaesaka, and trondn. :) All others are fakers.

---

Two new memcached releases are available today.

Stable …

[Read more]
Globalization Tasks (Part 3 of 3)

Yesterday and the day before yesterday I started to say what the status is for “Globalization” tasks.
Today I continue and finish.

Worklog WL#4579 Latin9 (iso-8859-15) character set
Current Status: architecture review done 2009-03-23.
Version = 6.1
It will be possible to create columns and variables with character set = latin9. It’s similar to latin1 and its collations correspond to latin1 collations. It doesn’t add functionality but might save on the conversion time to/from latin1 for a few people.
Example:

mysql> CREATE TABLE t
-> (s1 char(1) CHARACTER SET latin9
->             COLLATE latin9_german2_ci);
Query OK, 0 rows affected (0.06 sec)

Worklog WL#4583 Case conversion in Asian character sets
Current Status: architecture review done 2009-02-19.
Version = …

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MySQL Proxy: 0.7.0 pre-release

0.7.0 is (finally) around the corner. We are only pushing some last minute build-fixes, but otherwise we are done.

If you want to help us getting a good 0.7.0 release out, please test the snapshot RPMs we did build with the help of OpenSuSEs build-service.

At http://software.opensuse.org/search?baseproject=ALL&p=1&q=mysql-proxy-snapshot you will always find the latest snaptshot packages that we build from the latest launchpad code (everything > r640 is current). We have native binaries for Fedora 9 and 10 and OpenSuSE 11.0 and 11.1 right now.

If everything goes well, we should have a 0.7.0 release …

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MySQL Proxy: 0.7.0 pre-release

0.7.0 is (finally) around the corner. We are only pushing some last minute build-fixes, but otherwise we are done.

If you want to help us getting a good 0.7.0 release out, please test the snapshot RPMs we did build with the help of OpenSuSEs build-service.

At http://software.opensuse.org/search?baseproject=ALL&p=1&q=mysql-proxy-snapshot you will always find the latest snaptshot packages that we build from the latest launchpad code (everything > r640 is current). We have native binaries for Fedora 9 and 10 and OpenSuSE 11.0 and 11.1 right now.

If everything goes well, we should have a 0.7.0 release …

[Read more]
Contemplating the MySQL Diaspora

The break-up of the MySQL codeline is finally attracting attention from polite society outside the open source database community. This attention has been accompanied by much speculation, some of it informed and some not so informed about what is driving the split. Since everyone else is chipping in theories about how and why, here's mine:

It's the economy, stupid.

First, MySQL AB seeded a huge market for the MySQL database. MySQL 5.1 for …

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WaffleGrid is plugging along!

Yes we are still plugging away working on Waffle Grid, in fact I am testing the heck out of the plugin release this week. Some good news, great news, and bad news to report.

The good news on the testing is using the new Waffle Grid release, I am able to consistently get up close to 15K TPM, that’s up from 3K TPM without WaffleGrid ( 5x increase woohoo! ). This performance boost holds true through several tests, and based on this testing I am working on a set of recommended parameters for getting the most performance out of Waffle. I should have my recommendations for our User Conference presentation.

The great news is I have been able to get close to 20K TPM by disabling the read-ahead! This represents a huge boost in performance, over both the read-ahead enabled and the non-waffle tests. The bad news is in extended tests with the read-ahead disabled the plugin version takes a crap on me and consistently dies about 22-24 minutes …

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