… of variables add in – covering indexes, skewed distribution vs lookup frequency, IO bound or CPU bound workload which may be far too complicated. It is…
Post: Aligning IO on a hard disk RAID – the Benchmarks
June 9, 2011 By 11 Comments
… | 24×1600.000 Models | 24xIntel(R) Xeon(R) CPU X5650 @ 2.67GHz Caches | 24×12288 KB # Memory …and an IO bound read-write oltp benchmark in autocommit mode. File IO benchmark For … was still 15% — 909 iops unaligned -vs- 1049 aligned. Random write. This …
Post: InnoDB, InnoDB-plugin vs XtraDB on fast storage
January 13, 2010 By 12 Comments
… facts. First, chart with results for InnoDB vs InnoDB-plugin during runs (values are in… InnoDB-plugin. Now on CPU usage and disk utilization. Disk throughput: CPU (user) usage: Even with …can have very impressive performance improvement in IO-intensive or IO-bound workloads. You may want to use …
Post: InnoDB vs MyISAM vs Falcon benchmarks - part 1
January 8, 2007 By 117 Comments
… also use CPU bound workload in this case (no disk IO) to see how efficient storage engines are in terms of CPU usage. In… XEON 5130 model name : Intel(R) Xeon(R) CPU 5130 @ 2.00GHz stepping : 6 cpu MHz : 1995.004 cache size : 4096 KB…
Post: How multiple disks can benefit for single client workload ?
April 26, 2008 By 4 Comments
… get to main topic of the article lets comment on IO vs Disk question. If you look at Disk Based databases all… people understand IO and as not as I typically use these terms. For me IO is IO bound workload – disks are moving and CPU sits…) – it is very easy to see if system is IO bound or CPU bound, while to understand if MySQL goes through more rows than…
Post: Modeling MySQL Capacity by Measuring Resource Consumptions
March 8, 2011 By 1 Comment
… examines 20 rows, which means about 1 IO per 40 rows… which amounts to pretty IO bound load for me. But average is… less than 1 row in average which makes it very IO bound. So what If I am planning for load growth and… appropriate performance, what kind of hardware provides better balance of CPU vs IO utilization as well as as simple as how much does…
Post: PBXT benchmarks
April 8, 2007 By 14 Comments
… tested only READ queries, similar to ones in benchmark InnoDB vs MyISAM vs Falcon (http://www.mysqlperformanceblog.com/2007/01/08/innodb… also use CPU bound workload in this case (no disk IO) to see how efficient storage engines are in terms of CPU usage. In… model : 6 model name : Intel(R) Xeon(TM) CPU 3.20GHz stepping : 8 cpu MHz : 3192.222 cache size : 8192 KB 32GB…
Post: Heikki Tuuri Innodb answers - Part I
October 26, 2007 By 17 Comments
…would expect serious improvements are possible especially on high IO pressure workloads. Q7: Does Innodb has any …performance boost and it would write at 100MBps vs 33MBps. Any plans to enable tuning of …official InnoDB, though. PZ: If your load is CPU bound and you’re scaling out you can get…
Post: Sysbench evaluation of iSCSI performance
July 6, 2006 By 2 Comments
… pretty interesting post about iSCSI vs SCSI performance using SysBench. This is nice to…be for example it is log write bound rather than tablespace IO bound, which does not really benefit …often happens with Innodb if load becomes CPU bound rather than Disk bound. I would also be especially careful…
Post: Just do the math!
July 6, 2009 By 4 Comments
…/sec scanned if data is in memory. In this case CPU is normally the limiting factor. In case we hit the… etc may be slowed down 100-1000 then going from CPU bound to IO bound workload. You can get approximate numbers for other parts… acceptable for interactive reports. Finally let me talk about modeling vs benchmarking for capacity planning. I’m sure you need both…
