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451 CAOS Links 2009.12.08

Palm sued for GPL violation. Wind River launches Android distro. And more.

Follow 451 CAOS Links live @caostheory on Twitter and Identi.ca
“Tracking the open source news wires, so you don’t have to.”

For the latest on Oracle’s acquisition of MySQL via Sun, see Everything you always wanted to know about MySQL but were afraid to ask

# Palm sued by Artifex over alleged GPL violation.

# Bradley M Kuhn described “The Anatomy of a Modern GPL Violation.”

# Wind River …

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InfiniDB load rate trended through 23.9 billion rows

Just a quick graphical presentation of the load rate with InfiniDB importing 23.9 billion rows in about 12 1/2 hours.  Rows per second is just north of .5 million rows per second. 

Your milage will obviously vary based on row width, disk configuration, etc., but the expectation would be that the load rate is stable over a very wide range of cardinalities. 





InfiniDB load rate trended through 23.9 billion rows

Just a quick graphical presentation of the load rate with InfiniDB importing 23.9 billion rows in about 12 1/2 hours.  Rows per second is just north of .5 million rows per second. 

Your milage will obviously vary based on row width, disk configuration, etc., but the expectation would be that the load rate is stable over a very wide range of cardinalities. 





Monday's Meeting

Thanks to all who showed up at the North Texas MySQL Users Group Meeting on Monday night. We had two speakers, Pizza, and beer.

Benjamin Wood talked on the latest news on MySQL products and Robin Schumacher from Calpont discussed building high performance analytic databases.

And Basil won the drawing for the Amazon Kindle!


See you at the next meeting January 4th!

We’re in!

DRBD has entered a new phase. After being developed out of tree for 9 years, and after an extended review and streamlining phase since March, Phil submitted DRBD to be merged into 2.6.32 release of the Linux mainline kernel. The submission was accepted by block layer maintainer Jens Axboe, who merged DRBD in September, then deferred to the 2.6.33 merge window, and this morning Linus

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Looks like Amazon is listening

Just got the following in my email this morning. I sure wish they had done this earlier. “Free Inbound Data Transfer (until June 30, 2010) Data Transfer into AWS will be free of charge from now through June 30, 2010, making it even easier for customers to get their data into AWS. This applies to [...]

Crash recovery, again

There’s one stage in InnoDB crash recovery where it reads log file, you know, this one:

InnoDB: Doing recovery: scanned up to log sequence number 354164119040
InnoDB: Doing recovery: scanned up to log sequence number 354169361920

On a machine with bigger logs it will start spending nearly 100% CPU somewhere in recv_scan_log_recs. Guess what it does…. -fno-inline builds to the rescue:

#0  mem_block_get_len at ./include/mem0mem.ic:86
#1  mem_heap_get_size at ./include/mem0mem.ic:591
#2  recv_scan_log_recs at log/log0recv.c:2727

And:

samples  %        symbol name
8467     72.9222  mem_heap_get_size
291       2.5062  recv_add_to_hash_table
95        0.8182  mem_block_get_len

To speak in layman’s terms, InnoDB does SUM(LENGTH(allocation)) on its relatively wide memory (tens, hundreds of thousands of entries) arena, FOR EVERY LOG SEGMENT, to make sure it didn’t run out of available …

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Tech Webinar: Security for Web Application

Wednesday January 27th, Join the Sun Startup Essentials Webinar on  Security for Web Applications.

A key success factor for Web startups is to protect their applications and data from different security threats. Join this webinar to learn about security challenges and about key solutions such as encryption, authentication, certificates, secure and fault-tolerant storage, chrooted environments. The Sun Startup Essentials experts will also cover how to implement these solutions at minimal cost by using standard and open components such as Apache, MySQL, ZFS and more.

Registration limited to members of the Sun Startup Essentials program.

Your company is less than 6 year and  150 employee: Join Sun Startup Essentials >>

Tech Webinar: Security for Web Application

Wednesday January 27th, Join the Sun Startup Essentials Webinar on  Security for Web Applications.

A key success factor for Web startups is to protect their applications and data from different security threats. Join this webinar to learn about security challenges and about key solutions such as encryption, authentication, certificates, secure and fault-tolerant storage, chrooted environments. The Sun Startup Essentials experts will also cover how to implement these solutions at minimal cost by using standard and open components such as Apache, MySQL, ZFS and more.

Registration limited to members of the Sun Startup Essentials program.

Your company is less than 6 year and  150 employee: Join Sun Startup Essentials >>

Tech Webinar: Security for Web Application

Wednesday January 27th, Join the Sun Startup Essentials Webinar on  Security for Web Applications.

A key success factor for Web startups is to protect their applications and data from different security threats. Join this webinar to learn about security challenges and about key solutions such as encryption, authentication, certificates, secure and fault-tolerant storage, chrooted environments. The Sun Startup Essentials experts will also cover how to implement these solutions at minimal cost by using standard and open components such as Apache, MySQL, ZFS and more.

Registration limited to members of the Sun Startup Essentials program.

Your company is less than 6 year and  150 employee: Join Sun Startup Essentials >>

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