Re: Do I have to do anything to make sure ext4lazyinit works as being advertised ?

2017-02-01 Thread shirish शिरीष
at bottom :- On 01/02/2017, Lennart Sorensen wrote: > On Wed, Feb 01, 2017 at 02:27:39PM +0530, shirish शिरीष wrote: >>> My patch was fix for bug which was spotted on large disk arrays, >>> 36 in my case. So itable initialization was active all the time >>> while

Re: Do I have to do anything to make sure ext4lazyinit works as being advertised ?

2017-02-01 Thread Lennart Sorensen
On Wed, Feb 01, 2017 at 02:27:39PM +0530, shirish शिरीष wrote: > Basically the article's statement is wrong. > There is no such thing as explicit itable initialization IO bandwidth > restriction in MB/s. itable initialization rate is controlled by init_itable=N > see:

Re: Do I have to do anything to make sure ext4lazyinit works as being advertised ?

2017-02-01 Thread Lennart Sorensen
On Wed, Feb 01, 2017 at 04:53:34AM +0530, shirish शिरीष wrote: > hmm From what little I understand, it always the slowest interface > that needs to be supported. > > And IIUC , in ext4lazyinit's case it is probably some of the MMC cards > due to which the 16 MB/S transmission is kept -

Re: Do I have to do anything to make sure ext4lazyinit works as being advertised ?

2017-02-01 Thread shirish शिरीष
Hi all, Please see below - shirish शिरीष writes: > Dear Dmitry, > > I saw your patch about regression testing for ext4lazyinit > > https://patchwork.kernel.org/patch/9285509/ - that is where I got your mail > id. > > > I am a bit curious to know as to why the author/ess

Re: Do I have to do anything to make sure ext4lazyinit works as being advertised ?

2017-01-31 Thread shirish शिरीष
in-line :- On 01/02/2017, Lennart Sorensen wrote: > On Wed, Feb 01, 2017 at 12:46:48AM +0530, shirish शिरीष wrote: >> Now I have few queries - >> >> a. Are my assumptions wrong ? > > About the doing the init on a future boot, yes you are wrong. Ah...ok. > >

Re: Do I have to do anything to make sure ext4lazyinit works as being advertised ?

2017-01-31 Thread Lennart Sorensen
On Wed, Feb 01, 2017 at 12:46:48AM +0530, shirish शिरीष wrote: > Hi all, > > Warning - is a bit of a long read. > > >From what all I read and understood, ext4lazyinit simply makes you > start using the hdd without creating all the inodes for your system. > The only way that you know ext4lazyinit

Do I have to do anything to make sure ext4lazyinit works as being advertised ?

2017-01-31 Thread shirish शिरीष
Hi all, Warning - is a bit of a long read. >From what all I read and understood, ext4lazyinit simply makes you start using the hdd without creating all the inodes for your system. The only way that you know ext4lazyinit is working is when you see it via iotop. But when using debian-installer is