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SGA bigger than than the amount of HugePages configured (Linux – 11.2.0.3)
I just learned something new yesterday when demoing large page use on Linux during my AOT seminar. I had 512 x 2MB hugepages configured in Linux ( 1024 MB ). So I set the USE_LARGE_PAGES = TRUE (it...
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Hard Drive Predictive Failures on Exadata
This post also applies to non-Exadata systems as hard drives work the same way in other storage arrays too – just the commands you would use for extracting the disk-level metrics would be different. I...
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What the heck are the /dev/shm/JOXSHM_EXT_x files on Linux?
There was an interesting question in Oracle-L about the JOXSHM_EXT_* files in /dev/shm directory on Linux. Basically something like this: $ ls -l /dev/shm/* | head -rwxrwx--- 1 oracle dba 4096 Apr 18...
View ArticleMy New Youtube Channel
I have created a new youtube channel – and have uploaded some videos there already! Bookmark & Subscribe here: https://www.youtube.com/c/tanelpodertech More stuff is coming over the next weeks...
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RAM is the new disk – and how to measure its performance – Part 3 – CPU...
If you haven’t read the previous parts of this series yet, here are the links: [ Part 1 | Part 2 ]. A Refresher In the first part of this series I said that RAM access is the slow component of a modern...
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I’m speaking at Advanced Spark Meetup & attending Deep Learning Workshop in...
In case you are interested in the “New World” and happen to be in Bay Area this week (19 & 21 Jan 2017), there are two interesting events that you might want to attend (I’ll speak at one and attend...
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