pavement

Talk:RAID, performance tests

From FreeBSDwiki
(Difference between revisions)
Jump to: navigation, search
(6 Guidelines to Fix your credit score Score Quickly: new section)
m (Reverted edits by 149.3.139.58 (Talk) to last revision by Jimbo)
 
(18 intermediate revisions by 9 users not shown)
Line 100: Line 100:
  
 
== /end raw info ==
 
== /end raw info ==
 
== 6 Guidelines to Fix your credit score Score Quickly ==
 
 
Do you think you should fix your credit score ranking quick? May your credit report possess some downsides upon it? Are there a bad credit score history? Perhaps you have created a wide range of loan requests in addition to had missed a number of repayments prior to now? And then these guidelines on how to improve your credit scores rapid will show you how to deal with your complaint entirely.
 
 
A single. Accurate Any kind of Faults with your Credit file
 
 
One of the first items you must do if you want to improve your credit rating quickly will be to appropriate any improper details through your credit report. Email the credit chest of drawers and request for to alter a mistakes in your credit rating. When in the event they don't believe you actually that this was obviously a miscalculation, you can any opinion to your credit file to spellout. Nevertheless, be sure you maintain the remarks impartial, and there is no allegation to be able to any individual.
 
 
3. Build a Operating plan
 
 
Soon after taking good care of almost any flaws on your own credit profile, you then has to start to deal with your financial situation inside a far better manner. You ought to collection an allowance and adhere to it. Just buy what is absolutely required in the needs you have.
 
 
Three. Keep the Charge cards
 
 
If you would like to construct a favorable credit record fast, you should have a good settlement historical past for your credit cards. Make use of your charge cards just for required buying.
 
 
In relation to 2 to 4 plastic cards is an excellent range to own. You'll not be capable to repair your credit ranking quick should you simply have a single charge card. Furthermore, if you have over a number of plastic cards, you'll have a very low credit score record. Acquiring a lot of playing cards using big balances with them would not guide your credit ranking. You'd probably oftimes be happier economically and for your credit ranking if you ever merge many of your financial obligations to a decrease attention loan. Having said that, you shouldn't definitely overdo it.
 
 
If you need to reduce your variety of charge cards, shed up to date a credit card 1st. A mature bank card is going to count for additional points while you learn to raise your credit score report.
 
 
Four. Generally Send out Obligations <a href=http://www.fbbv.es>prestamos rapidos</a> on Time
 
 
Of all strategies to mend loans, it is vital to always fork out when they're due. You should never miss the transaction in every mortgage loan or perhaps expenses which will display in your credit history. Regardless of whether a borrowing arrangement business and also plastic card company gives you on a monthly basis or two leeway time periods seeing that extension in making repayments, it is advisable unless you recognize this particular present. Missing the due date can still indicate to be a skipped settlement for your credit rating. Thus, it is best to make your installments promptly, if you really want to fix ones 'tokens'. Additionally, guarantee that your installments tend to be received on and also ahead of the payment date.
 
 
Several. Shell out Greater than The actual Lowest
 
 
When it's doable, deliver debit card bills which are over the minimum amount total thanks without notice that you can. It assists to your credit rating, save you with curiosity, and would bring an individual more detailed debt help.
 
 
Take note not to optimum out your a credit card. Be certain that niche total is below your credit limit. This will help improve your credit document.
 
 
Half-dozen. <a href=http://www.fbbv.es>creditos rapidos</a>, Will not Help to make Lots of Loan requests
 
 
Applying for lots of loan requests are going to banner a person for an undesirable payer, systems work efficiently not ever undertake it. Likewise, don't turn plastic cards several times to take advantage of gives, or have brand-new lending products to repay outdated personal loans.
 
 
To get rid of your entire debt, just do this once. If you're shopping around to find the best terminology, try to avoid give out your reputation and also address.
 
 
6. Produce Of which Telephone call
 
 
For anyone who is in times in which you are going to have a hard time meeting the actual timeline for your repayment, do make this call. It's significantly better so that you can refer to them as, as compared to awaiting the theifs to get in touch with anyone. To set up to miss repayments, they might get started with the range firms, that is certainly truly the most severe factor which will transpire in your credit score.
 
 
Speak with these in short , in addition to explain your situation in truth. Expect you'll cause them to become a deal and also negotiate. Make a credit repairing repayment schedule which is practical for you. Should they will provide a pair of payment-free several weeks, express something such as: "No appreciate it, I might want to continue to keep shelling out a little every month". This can help you stay away from overlooked bills showing for your personal credit record and shows that you'll be truly serious to acquire debt help.
 
 
If you have a new credit repairing repayment schedule exercised along with them, perform seek to request if they might say yes to halt canceling you, allowing you to have a chance to fix your credit scores rapidly. A lot of companies will say yes to that ask for, provided that you plan to deliver installments by the due date without overlook any kind of obligations on the new prepare.
 
 
As soon as you try these tips, you will be able to improve to your credit rating fast. It will also help that you deal with your money and achieve debt settlement in the future.
 
 
Resource for this article
 
 
<a href=http://www.fbbv.es>creditos personales</a>
 

Latest revision as of 09:56, 18 December 2011

[edit] 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

[edit] /end raw info

Personal tools