Leave a Reply Cancel reply. Enter your mobile number or email address below and we’ll send you a link to download the free Kindle App. The raid controller write cache would do an awesome job at merging the write operations for the file system journal and the amount of write operations going to the SSD would be cut by half. You can use the following information to find out where mysqld died. See pictorial representation What you should have done is this: The max performance I got on 3. I have reproduced my results on 2 different servers ubuntu

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Could you ask this question on our forum instead? X-lock on RW-latch at 0x3f3f3f8 created in file fil0fil.

How to calculate a good InnoDB log file size

It was really good. Attempting to collect some information that could help diagnose the problem. But also realize this: Did you try sending the double-buffer to a separate disk drive or SSD?

Similarly, there is no significant difference on average response time with different page size settings Figure 2. We intentionally crash the server.


: MySQL技术内幕:InnoDB存储引擎 (数据库技术丛书) (Chinese Edition) eBook: 姜承尧: Kindle Store

Restoring possible half-written data pages from the doublewrite InnoDB: Dobb’s encourages readers to engage in spirited, healthy debate, including taking us to task. Write a customer review. Load the Memcached plugin at startup time by adding this option to your my.

I restarted mysqld this morning, to increase the size of the innodb logs and increase the amount of memory allocated to the innodb buffer pool. The dispersion is qualitatively similar for all three. It seems that in 5. Normal shutdown 8: Just looking at the error log, I think you dodged a bullet in this instance. In my case, the value was already set to 1, so I followed the procedure. How best to test a new server than to run benchmarks on it, so here we go!

I’ll use Java for my example here I’ll also be using Google’s memcached client for Java, spymemcached: Was the InnoDB “crash recovery” successful?

The server I used for the measurements above is a big one doing a lot of work, not a toy. I cannot work with the resources you gave me! Set up a giveaway. Read more Read less.


The values presented above are just the averages of those data sets. Then you can start reading Kindle books on your smartphone, tablet, or computer – no Kindle device required. I will use sysbench v0. SSD Looking at SSD in Figure 3, there seems to be a small decrease in performance if a 64K page size is used, although this decrease is not very significant.

You can use the following information to find out where mysqld died. Database physically writes the file full: Rollback of non-prepared transactions completed T We intentionally generate a memory trap. Not Enabled Enhanced Typesetting: Then again, the nature of our works are also different — your clients have more dire emergencies than ours, likely because yours come to you in dire emergencies, and we may have some come to us in a dire emergency, but often they stay along for general day-to-day DBA stuff….