Talk:RAID, performance tests
(→Purchase Cheap UGG Boots At Online Store: new section) |
(→Ugg Australia boots Keep Your Feet Warm and in Style: new section) |
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One of the best ways to find cheap boots from http://www.aniub.com/ - UGG Australia is engaged in online auctions. Search for a number of Web auction web sites. Best to click on the one you forever use. Have a search specifying these beautiful boots together with the color, length or style you need. So find and finalize upon a website selling a pair of UGG boots, which perfectly match your taste, and begin bidding. Make sure you get the right size of these cheap http://www.aniub.com/ - UGG Boots. | One of the best ways to find cheap boots from http://www.aniub.com/ - UGG Australia is engaged in online auctions. Search for a number of Web auction web sites. Best to click on the one you forever use. Have a search specifying these beautiful boots together with the color, length or style you need. So find and finalize upon a website selling a pair of UGG boots, which perfectly match your taste, and begin bidding. Make sure you get the right size of these cheap http://www.aniub.com/ - UGG Boots. | ||
http://www.aniub.com/ - UGGs are a great Present for the Christmas and holiday season. If you have the time to search the web and you can find a good deal on UGG Boots, and even find discount UGG's! There are even brick and mortar stores that offer deals as well. Either way, before you jump into buying your UGG's online, take a moment to explore your options. | http://www.aniub.com/ - UGGs are a great Present for the Christmas and holiday season. If you have the time to search the web and you can find a good deal on UGG Boots, and even find discount UGG's! There are even brick and mortar stores that offer deals as well. Either way, before you jump into buying your UGG's online, take a moment to explore your options. | ||
| + | |||
| + | == Ugg Australia boots Keep Your Feet Warm and in Style == | ||
| + | |||
| + | http://www.bootsuggonsale.com/ - Ugg come in many, different colors, styles, and price ranges. But one things for sure, these fashionable boots will keep your feet warm and looking great all winter long. Furry cuffs, buttons, wedges, and buckles are just some of the cute details that keep these boots on the top of my list winter after winter. Let me help you find the perfect fit with my top 5 recommendations. | ||
| + | The http://www.bootsuggonsale.com/sale-ugg-classic-tall-5815_c3 - UGG Classic Tall 5815 come in sand, black or chestnut suede, with a soft, comfortable shearling on the inside to keep feet toasty warm. | ||
| + | The Retro Cargo UGG Boots are a lot of fun. It is available in burnt olive, black, and espresso. | ||
| + | The http://www.bootsuggonsale.com/sale-ugg-classic-cardy-5819_c4 - UGG Classic Cardy 5819 can be worn 3 different ways: tall, folded, or cuffed. It is made out of cotton, wool, and shearling. | ||
| + | The Maxine Wedge UGG boots are available in black, chestnut, or chocolate leather, with shearling on the inside. | ||
Revision as of 10:58, 20 November 2010
Contents |
raw info temporarily moved from main article page here
Equipment:
Athlon X2 5000+
3x Western Digital 250GB drives (WDC WD2500JS-22NCB1 10.02E02 SATA-300)
2x Western Digital 500GB drives (WDC WD5000AAKS-00YGA0 12.01C02)
Nvidia nForce onboard RAID controller, Promise TX2300 RAID controller
Athlon 64 3500+
5x Seagate 750GB drives (Seagate ST3750640NS 3.AEE SATA-150)
Nvidia nForce onboard RAID controller
Procedure:
/usr/bin/time -h measuring simultaneous cp of 3.1GB files to /dev/null
files generated with dd if=/dev/random bs=16M count=200
simultaneous cp processes use physically separate files
write performance tested with dd if/dev/zero bs=16M count=200
sysctl -w vfs.read_max=128 unless otherwise stated
Notes:
system default of vfs.read_max=8 bonnie++ was flirted with, but couldn't figure out how to make it read big enough chunks of data to ever once hit the disk instead of the cache!
Ancillary data:
write performance (1 process) 5 250GB/500GB, graid3 : 153 MB/s 5 250GB/500GB, graid3 -r : 142 MB/s 1 500GB drive : 72 MB/s 1 WD Raptor 74GB drive (Cygwin) : 60 MB/s 1 250GB drive : 58 MB/s 5 250GB/500GB, gmirror round-robin : 49 MB/s 5 250GB/500GB, gmirror split 128k : 49 MB/s
1 process 5 250GB/500GB, graid3 : 213 MB/s (dips down to 160MB/sec) 5 750GB disks, graid3 : 152 MB/s (wildly fluctuating 120MB/s-200MB/s) 3 250GB disks, graid3 : 114 MB/s (dips down to 90MB/sec) 1 500GB disk : 76 MB/s 1 750GB disk : 65 MB/s (60MB/s-70MB/s) 5 250GB/500GB, gmirror round-robin : 63 MB/s 3 250GB disks, gmirror round-robin : 59 MB/s 1 250GB disk : 56 MB/s (very little variation) 3 250GB disks, gmirror split 128K : 55 MB/s 5 250GB/500GB, gmirror split 128K : 54 MB/s
2 processes 5 250GB/500GB, graid3 : 128 MB/s (peak: 155+ MB/sec) 5 750GB disks, graid3 : 125 MB/s (peak: 140+ MB/sec) 3 250GB disks, graid3 : 98 MB/s (peak: 130+ MB/sec) 3 250GB disks, graid3 -r : 88 MB/s (peak: 120+ MB/sec) 2 250GB disks, nVidia onboard RAID1 : 81 MB/s (peak: 120+ MB/sec) // initial test had flawed data - retested for final article 5 250GB/500GB, gmirror round-robin : 73 MB/s 2 250GB disks, Promise TX2300 RAID1 : 70 MB/s (peak: 100+ MB/sec) // initial test had flawed data - retested for final article 1 500GB disk : 70 MB/s 1 250GB disk : 56 MB/s (peak: 60+ MB/sec) 2 250GB disks, gmirror round-robin : 55 MB/s (peak: 65+ MB/sec) 3 250GB disks, gmirror round-robin : 53 MB/s 5 250GB/500GB, gmirror split 128K : 50 MB/s 3 250GB disks, gmirror split 128K : 46 MB/s
3 processes 5 250GB/500GB, graid3 : 106 MB/s (peak: 130+ MB/sec low: 90+ MB/sec) 5 250GB/500GB, graid3 -r : 103 MB/s (peak: 120+ MB/sec low: 80+ MB/sec) 1 500GB disk : 72 MB/s 5 250GB/500GB, gmirror round-robin : 69 MB/s 1 250GB disk : 55 MB/s 3 250GB disks, gmirror round-robin : 53 MB/s 3 250GB disks, gmirror split 128K : 49 MB/s 5 250GB/500GB, gmirror split 128K : 47 MB/s
4 processes 5 250GB/500GB, graid3 : 105 MB/s (peak: 130+ MB/sec low: 90+ MB/sec) 5 250GB/500GB, graid3 -r : 105 MB/s (peak: 120+ MB/sec low: 80+ MB/sec) 1 500GB disk : 72 MB/s 5 250GB/500GB, gmirror round-robin : 71 MB/s (peak: 75+ MB/sec low: 64+ MB/sec) 3 250GB disks, gmirror round-robin : 65 MB/s 1 250GB disk : 55 MB/s 3 250GB disks, gmirror split 128K : 55 MB/s 5 250GB/500GB, gmirror split 128K : 47 MB/s (peak: 59+ MB/sec low: 31+ MB/sec)
5 processes 5 250GB/500GB, graid3 -r : 107 MB/s (peak: 120+ MB/sec low: 80+ MB/sec) 5 250GB/500GB, graid3 : 105 MB/s (peak: 130+ MB/sec low: 90+ MB/sec) 5 250GB/500GB, gmirror round-robin : 72 MB/s (peak: 80+ MB/sec low: 67+ MB/sec) 1 500GB disk : 72 MB/s 1 250GB disk : 56 MB/s 5 250GB/500GB, gmirror split 128K : 47 MB/s (peak: 60+ MB/sec low: 35+ MB/sec)
vfs.read_max=8, 2 parallel cp processes 3 250GB disks, gmirror round-robin : 31 MB/s 1 250GB disk : 27 MB/s 2 250GB disks, gmirror round-robin : 23 MB/s
Preliminary conclusions:
system default of vfs.read_max=8 is insufficient for ANY configuration, including vanilla single-drive gmirror read performance sucks - Promise read performance sucks - nvidia read performance sucks for single-process graid3 is the clear performance king here and offers very significant write performance increase as well SATA-II seems to offer significant performance increases over SATA-I on large arrays
/end raw info
Purchase Cheap UGG Boots At Online Store
One of the best ways to find cheap boots from http://www.aniub.com/ - UGG Australia is engaged in online auctions. Search for a number of Web auction web sites. Best to click on the one you forever use. Have a search specifying these beautiful boots together with the color, length or style you need. So find and finalize upon a website selling a pair of UGG boots, which perfectly match your taste, and begin bidding. Make sure you get the right size of these cheap http://www.aniub.com/ - UGG Boots. http://www.aniub.com/ - UGGs are a great Present for the Christmas and holiday season. If you have the time to search the web and you can find a good deal on UGG Boots, and even find discount UGG's! There are even brick and mortar stores that offer deals as well. Either way, before you jump into buying your UGG's online, take a moment to explore your options.
Ugg Australia boots Keep Your Feet Warm and in Style
http://www.bootsuggonsale.com/ - Ugg come in many, different colors, styles, and price ranges. But one things for sure, these fashionable boots will keep your feet warm and looking great all winter long. Furry cuffs, buttons, wedges, and buckles are just some of the cute details that keep these boots on the top of my list winter after winter. Let me help you find the perfect fit with my top 5 recommendations. The http://www.bootsuggonsale.com/sale-ugg-classic-tall-5815_c3 - UGG Classic Tall 5815 come in sand, black or chestnut suede, with a soft, comfortable shearling on the inside to keep feet toasty warm. The Retro Cargo UGG Boots are a lot of fun. It is available in burnt olive, black, and espresso. The http://www.bootsuggonsale.com/sale-ugg-classic-cardy-5819_c4 - UGG Classic Cardy 5819 can be worn 3 different ways: tall, folded, or cuffed. It is made out of cotton, wool, and shearling. The Maxine Wedge UGG boots are available in black, chestnut, or chocolate leather, with shearling on the inside.
