Blogs about: Io Bottlenecks

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Linux Disk Alignment Reloaded

My all-time high post with the most pageviews is the one on Linux disk alignment: How to set disk alignment in Linux. In that post I showed an easy method on how to set and check disk alignment under… more →

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Linux Disk Alignment Reloaded — 1 comment

Bart Sjerps wrote 1 month ago: My all-time high post with the most pageviews is the one on Linux disk alignment: How to set disk al … more →

Tags: Oracle, Various, Performance 2, ASM, ASMlib, disk alignment, EMC, flash disk, I/Ops

ZFS and Database fragmentation — 7 comments

Bart Sjerps wrote 2 months ago: Disk Fragmentation – O&O technologies.Hope they don’t mind the free advertising Yet … more →

Tags: Oracle, Performance 2, ASM, EMC, Fragmentation, I/Ops, Linux, Oracle, Performance

Managing REDO log performance — 6 comments

Bart Sjerps wrote 1 year ago: I have written before about managing database performance issues, and the topic is hot and alive as … more →

Tags: Oracle, Performance 2, ASM, Performance, I/Ops, Response Time, write cache, flash disk

Performance - The database stack — 4 comments

Bart Sjerps wrote 1 year ago: As mentioned before, I frequently find myself in discussions around Oracle performance and how an Or … more →

Tags: Oracle, Performance 2, ASM, EMC, EMC Symmetrix, I/Ops, Linux, logical volume managers, Oracle

Application processing at lightning performance - The hourglass view of access times — 2 comments

Bart Sjerps wrote 1 year ago: Even in these modern times, when lots of things are changing in the ICT world, some lessons from the … more →

Tags: Performance 2, Performance, I/Ops, Response Time, write cache, flash disk

Performance - The I/O stack — 2 comments

Bart Sjerps wrote 1 year ago: In my last post, I gave a highly simplified representation of “The I/O stack” of a datab … more →

Tags: Oracle, Performance 2, Oracle, Performance, I/Ops, Response Time

The missing link in application performance tuning

Bart Sjerps wrote 1 year ago: When dealing with application performance problems, the quick and easy solution is often to throw ha … more →

Tags: Performance 2, Performance, I/Ops, Response Time

POC: Piece Of Cake or Point Of Contradiction? — 2 comments

Bart Sjerps wrote 1 year ago: Every now and then I get involved in Customer Proof of Concepts. A Proof of Concept (POC) is, accord … more →

Tags: General, Oracle, Performance 2, Availability, Disaster Recovery, Performance, Data integrity, I/Ops, Service Level Agreement

Monkey Business — 1 comment

Bart Sjerps wrote 1 year ago: Maybe you have heard the story of the Monkey Experiment. It is about an experiment with a bunch of m … more →

Tags: Innovation, Oracle, General, Oracle, Performance, I/Ops, flash disk, Energy efficiency, EMC

Managing database performance SLA's with quality of service

Bart Sjerps wrote 2 years ago: A guy walks into the showroom of a Porsche dealer. He wants to buy a new set of hot wheels. The sale … more →

Tags: Oracle, Performance 2, Performance, I/Ops, Response Time, Service Level Agreement, SLA, QoS, Quality of Service

Pinpointing I/O bottlenecks on Linux — 22 comments

Bart Sjerps wrote 2 years ago: Does this story sound familiar? The end users of a database application start complaining about poor … more →

Tags: faq, Oracle, Performance 2, I/Ops, iostat, Linux, Performance, Response Time, service time


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