… to buy memory instead, and use the storage device for writes. Here’s the benchmark I came up with to confirm… performance by about five times (or 2x with an Intel SSD). To get the same improvement with memory, you would… memory slots already filled?) Does your budget allow to install SSD cards? (You may still need more than one, since they…
Post: Intel 520 SSD in MySQL sysbench oltp benchmark
May 21, 2012 By 11 Comments
… does not affect MySQL workload significantly, and single Intel 520 SSD gives much better throughput and response time comparing with traditional… is that this card does not have capacitor to protect write cache, so if you worry about data protection in case… power outage it is better to disable write cache on this card and use write cache from RAID controller (i.e. LSI…
Post: Testing STEC SSD MACH16 200GB SLC
April 25, 2012 By 9 Comments
… are two reasons for that. First, MySQL/InnoDB uses async writes, so this will emulate database load, and second, async mode… G6, filesystem: ext4, mounted with nobarrier. The results for random write case (8 async IO threads): In general it shows stable… 4 STEC MACH16 cards. If you are interested more in SSD and MySQL questions – I will be giving a webinary “MySQL…
Post: ext4 vs xfs on SSD
March 15, 2012 By 26 Comments
… getting a lot of question if this is good for SSD, or something else (i.e. xfs) should be used. Traditionally…” with O_DIRECT case (sysbench fileio 16 KiB blocksize random write workload): ext4 1 thread: 87 MiB/sec ext4 4 threads…, namely: “If MySQL 5.5 uses async IO, is innodb_write_io_threads still important?”, and it seems it is not…
Post: Intel 320 SSD random write performance
June 23, 2011 By 1 Comment
I have posted results for Intel 320 SSD on our ssdperformanceblog.com blog. To not duplicate content, there is link on original post:http://www.ssdperformanceblog.com/2011/06/intel-320-ssd-random-write-performance/ Follow my twitter @VadimTk for further results.
Post: Testing Intel® SSD 910
September 4, 2012 By 2 Comments
… came on PCI-e SSD market with their Intel SSD 910 card. With a slogan “The ultimate data center SSD” I assume Intel… for other reviews, i.e. Testing Intel SSD 520 First results are for asynchronous writes: The result averages at 150 MiB/sec…
Post: Benchmarks of Intel 320 SSD 600GB
February 22, 2012 By 2 Comments
… have a chance to test a system with Intel 320 SSD drives (NewRelic provided me with an access to the server… get 5.5T of useful space Intel drives: Intel 320 SSD 600GB HDD drives: Seagate Cheetah 15K 600GB 16MB Cache SAS… writes pages from buffer pool (replacing pages in buffer pool). This however allows us to see the best possible scenario for SSD…
Comment: FlashCache: tpcc workload
April 20, 2011 By 18 Comments
… expensive SSD or flash-drive such as X25E or fusion io drive with FlashCache due to the SSD write performance limitation? Would SSD made… production environment, we should always spend big to get SLC SSD? Thanks, Tom
Post: Write performance on Virident tachIOn card
December 13, 2010 By 10 Comments
… of the biggest problems with solid state drives is that write performance may drop significantly with decreasing free space. I wrote… before (http://www.ssdperformanceblog.com/2010/07/free-space-and-write-performance/), using a FusionIO 320GB Duo card as the example… important to know if you are looking to use an SSD card as a cache layer (say, with FlashCache), as, usually…
Comment: Intel 320 SSD read performance
September 27, 2011 By 11 Comments
Unfortunately the high cost of SSD doesn’t take advantage of the covenant in speed. Interesting comparison, the speed and volume of record described http://www.xtremesystems.org/forums/showthread.php?271063-SSD-Write-Endurance-25nm-Vs-34nm
