Getting ready for kernel26 2.6.32 - Question of ext4 performance

As 2.6.32 approaches, i'd like to post the Phoronix benchmarks for it
http://www.phoronix.com/scan.php?page=a … arks&num=1
There seems to be a "large" performance loss on ext4 due to a specific commit on main kernel branch.
http://www.phoronix.com/scan.php?page=a … ions&num=2
http://git.kernel.org/?p=linux/kernel/g … 25b9aeb745
I'd like to ask if it is possible to have .32 kernel with a patch that would revert that upstream commit.
If that isn't allowed by Arch patching policy, just ignore this thread

Bonnie++ from AUR:
System: Intel Core i5 750, 4GB of RAM, WD6401AALS
2.6.31
Version 1.96 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
flamepc 8G 723 97 82719 7 39984 4 4192 98 106395 4 385.7 4
Latency 11481us 943ms 265ms 2472us 11436us 306ms
Version 1.96 ------Sequential Create------ --------Random Create--------
flamepc -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 24965 33 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency 11731us 422us 437us 112us 82us 81us
1.96,1.96,flamepc,1,1259401928,8G,,723,97,82719,7,39984,4,4192,98,106395,4,385.7,4,16,,,,,24965,33,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,11481us,943ms,265ms,2472us,11436us,306ms,11731us,422us,437us,112us,82us,81us
2.6.32
Version 1.96 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
flamepc 8G 822 98 81669 7 38687 3 4198 75 105470 4 255.0 3
Latency 11138us 1600ms 1302ms 74131us 52760us 573ms
Version 1.96 ------Sequential Create------ --------Random Create--------
flamepc -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency 129us 402us 411us 184us 62us 51us
1.96,1.96,flamepc,1,1259395151,8G,,822,98,81669,7,38687,3,4198,75,105470,4,255.0,3,16,,,,,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,11138us,1600ms,1302ms,74131us,52760us,573ms,129us,402us,411us,184us,62us,51us
I just ran bonnie++ executable, with no options.
I'll try the ozone benchmark now. [edit] iozone -a has a non-readable output hmmm.
Last edited by flamelab (2009-11-28 11:04:42)

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    Is there a way I can cancel/delete/remove the now unused account? If not, is there a way for me to edit my Profile on Line 1, so that I can use my correct Primary e-mail as the ID, in preparation for the migration?
    I apologise if this sound messy, but I want my account to be as 'clean' as possible, so that there are no potential problems when it finally comes to migration taking place.
    Any help or advice would be much appreciated.
    Regards,
    Alan

    Hi,
    First of all, thanks to whiskywheels for the well-intended suggestion. I appreciated the thought, but in my experience there is not a chance that just a phone call to BT Support whould have solved the problem. It was BT Phone Support that in part are responsible for creating the problem I now find myself with.
    However, the reason for my coming back on this is to say that I had a phone call this afternoon from a MOD who I am absolutely certain was trying to be honest and helpful. The upshot of what she said is that no useful purpose would be served by changing my BT ID, as I only have one BT ID, not two as I intimated in my first e-mail in this thread (see message 1 of this thread for an explanation).
    I do have two accounts (one live - with the only phone line I have) and (one dead and now unused, although I can still access its information in MyBT).
    Following the MOD's advice, having nothing to this effect in writing, I will try not to quote her exactly (I don't want to fall foul of breaking any BT rules etc), but my understanding was that my Primary e-mail address, and several sub-accounts are all 'linked' to one BT ID she said I have, the one that ends [email protected] .
    My reason for raising this in the first place was to be as prepared as I can be for Migration to BT Mail when it finally comes along.
    I have however to admit to now being really confused. Maybe it is the case that I have confused what is an ID, and the use of e-mail addresses as an ID. What I mean by that is as follows:
    Using the e-mail tab on the BT.Com homepage the login asks for BT ID or Email Address, and then a Password. If I then use the one BT ID I am told that I have, then subseqently add the current e-mail password, I get a message which says "We don't recognise your details. Please check you've entered your full email address and password correctly and try again."
    When I try inputting my primary e-mail address (instead of the BT ID), and then the e-mail password as before (which did work ok this afternnon, but now will not) I currently get the predictable request to change my password. It's a nightmare to say the least, and fills me with no confidence whatsoever for when that fateful day of Migration finally arrives.
    If the login that comes up after pressing the e-mail tab asks for a BT ID, why will that not work, if as the MOD says I only have one BT ID not the two that I had thought. I could go on, but I am sure you get the point, confusion reigns!
    I would have much preferred that my BT ID was the same as my primary e-mail address, but the MOD in question said 'to the effect' that it was not necessary.
    Any thoughts or advice??
    Regards,
    AlanF

  • Getting Ready for Co-existence

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    Hi,
    For the migration from the Exchange 2007 to Exchange 2013, we need change the external URLs with the new Exchange 2007 host name legacy.domain.com and migrate all mailboxes including public folders.
    For more information about the migration, you can refer to the following articles:
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  • Get ready for changes in dealer finacing

    I have been following the car industry closely and subscribing to come industry journals etc.  I am not sure what the policy is here in terms of posting content so I will summerize what we will see in terms of changes to dealer markups on interest.  We all probably know that when a dealer arranges financing they often times add points to the interest they offer you so they can add to their profit.  The feds are not happy about this practice because they see it as predatory and recent data shows that they mark up the interest disproportionatly on african americans, latinos and asians.  The reality is they tend to do this to anyone with credit challanges or who is not sophisticated in these transactions.  Today there is a story that Honda has agreed to pay 25 million to customers who were overcharged interest by dealers.  As part of their stipulated agreement (where they admit no wrongdoing by the way) they are establishing a policy that their dealers can only charge 1-1.5% over the bank quote.  The dealers hate that the feds are in their business in this regard and are putting their lobbyists to work to try and get the feds to back off because this is a big part of their profit.  I think it is a sleezy practice so my reccomendation is to always get a preapproval from a credit union or a bank.  There are times where due to credit challanges you can't get that done and need the dealers help, if you are in that situation make sure you understand that the APR is negotiable, often times they will offer a lower APR if you take an add on like a warranty.  Once they quote that APR you know that is the APR your really qualified for.   Thought this was an interesting development and worthy of some discussion for those who are in the market.

    StartingOver10 wrote:
    oblackhawko wrote:
    There have been threats of "Flat Fees" instead of Points for dealerships for a while now. Each lender is a litte different with underwriting guidelines. and yes Honda did get slapped with a fine but that's the government showing their constituents their teeth. It was because there was a statistical difference between different demographics. It could be they are charging them more or they are charging them LESS. And you would say "It's definitely not LESS because that wouldn't make any sense" well the dealership I work at got a call and they said we were charging women a "Statistically significant difference in pricing" What was the difference? 25 basis points LESS than everyone else (.25%) and they suggest we change some policies etc. NADA has already suggested to their members how to protect your dealership. People think it's huge difference in APR between "discrimination" but all it needs to be is some type of difference.  APR sometimes is negotiable, depending on lender and your tier. higher tier (6,7,8): less to no negotiations. In RE: StartingOver10: Extended Service Contracts cannot be tied to the approval of the LOAN, the APR is a separate issue. Contracts that have Extended Service Contracts perform better than contracts that have no ESC.^^^What do you mean by that statement highlighted above?  If you are using third party lenders (eg Chase, WF etc) you would not know the performance of the loan unless you had some sort of buy back arrangement if the loan defaulted. The obvious difference would be in you were in a BHPH type lot where you service the loan and the vehicle. That is what prompted my question to you. What report do you get from the lender that ties the two together? [Note, you can tell I am not a fan of ESC because I want to be able to shop for any service I get with no restrictions. I don't want to pay thousands of dollars up front for a 'warranty' that has many exclusions. But that is just me. Others prefer to have a ESC.]Neither am I. I bought my first new car in 1971 and have purchased probably several dozen since then and have never had a ESC. I've never needed one and IMO that's pretty good odds I will never need one in the future. But in the end it's like any other kind of insurance. We each have to decide if we think we'll need it and go from there.

  • Getting ready for Infinity ?

    Hi,
    I've just checked on-line and found that I can not get Infinity at 55mb.
    However, It's stating that this can only be connected to my master socket in the hallway ( I have no poer in the hallway) and I use my current Hub3 in my office at the back of the house.
    I've had a look at the master socket and there appears to be a Cat5 cable going out of the back of the socket, directly outside and around the house, coming into my office and directly into another wall socket.
    With this in place will I be able to have the Infinity installation in my office ?
    Regards
    Derek

    true some of the contractors are like that if you get an Openreach engineer you should have no problem
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