[opensuse] Simulating slow file system

Hi, I was wondering whether there is any tool in linux that can be used to simulate a slow file system ? I would need this to test the application I am working on, since some customers are not using fast machines (some are even using Windows with encrypted file systems). I would add such a tool t

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: Hi, I was wondering whether there is any tool in linux that can be used to simulate a slow file system ? I would need this to test the application I am working on, since some customers are not using fast machines (some are even using Windows with encrypted file systems). I

Re: [opensuse] Simulating slow file system

There are probably some proper tools, but here are my suggestions for DIY! Emmanuel Briot wrote: > I was wondering whether there is any tool in linux that can be used to > simulate a slow file system ? Use NFS over a slow network (or over a fast network for that matter :) And give it some interes

Re: [opensuse] Simulating slow file system

Russell Jones wrote: Emmanuel Briot wrote: Hi, I was wondering whether there is any tool in linux that can be used to simulate a slow file system ? I would need this to test the application I am working on, since some customers are not using fast machines (some are even using Windows with encry

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: Hi, I was wondering whether there is any tool in linux that can be used to simulate a slow file system ? I would need this to test the application I am working on, since some customers are not using fast machines (some are even using Windows with encrypted file systems). I

Re: [opensuse] Simulating slow file system

> Basically, ALL filesystems which reside on disk are slow, > and all filesystems which reside on random-access > memory (even non-volatile NVRAM such as USB sticks) > are fast. Well obviously if my hard-disk was slow enough to get what I wanted, I wouldn't need to ask the question. So yes, I do h

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: Basically, ALL filesystems which reside on disk are slow, and all filesystems which reside on random-access memory (even non-volatile NVRAM such as USB sticks) are fast. Well obviously if my hard-disk was slow enough to get what I wanted, I wouldn't need to ask the questio

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: Basically, ALL filesystems which reside on disk are slow, and all filesystems which reside on random-access memory (even non-volatile NVRAM such as USB sticks) are fast. Well obviously if my hard-disk was slow enough to get what I wanted, I wouldn't need to ask the questio

Re: [opensuse] Simulating slow file system

> What makes disk filesystems slow is not the code run on > the CPU...it's the operating speed of the disk-head > actuator. > > It's not the filesystem that's slow, it's the DISK DRIVES > that are slow. > > The disk I/O bottleneck is not the CPU overhead , it's the > speed which the read/write he

Re: [opensuse] Simulating slow file system

On Wednesday 14 November 2007 22:24:19 Aaron Kulkis wrote: > What makes disk filesystems slow is not the code run on > the CPU...it's the operating speed of the disk-head > actuator. > > It's not the filesystem that's slow, it's the DISK DRIVES > that are slow. So what is your theory on why file s

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: > Now, Dave's proposal of using NFS is indeed what I have been doing so > far, but nowadays local network become so fast that the difference is > not that big. As somebody else said, you can tell a NIC to run at say 10 Mbps. > I'll investigate the "rsize=1, wsize=1" paramete

Re: [opensuse] Simulating slow file system

Dave Howorth wrote: > Emmanuel Briot wrote: > > > Cheers, Dave PS You could always try: :) -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]

Re: [opensuse] Simulating slow file system

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 The Thursday 2007-11-15 at 09:49 +0100, Emmanuel Briot wrote: Now, Dave's proposal of using NFS is indeed what I have been doing so far, but nowadays local network become so fast that the difference is not that big. All I want here is to be able t

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: > Hi, > > I was wondering whether there is any tool in linux that can be used to > simulate a slow file system ? > I would need this to test the application I am working on, since some > customers are not using fast machines (some are even using Windows with > encrypted file s

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: >> What makes disk filesystems slow is not the code run on >> the CPU...it's the operating speed of the disk-head >> actuator. >> >> It's not the filesystem that's slow, it's the DISK DRIVES >> that are slow. >> >> The disk I/O bottleneck is not the CPU overhead , it's the >>

Re: [opensuse] Simulating slow file system

Anders Johansson wrote: On Wednesday 14 November 2007 22:24:19 Aaron Kulkis wrote: What makes disk filesystems slow is not the code run on the CPU...it's the operating speed of the disk-head actuator. It's not the filesystem that's slow, it's the DISK DRIVES that are slow. So what is your the

Re: [opensuse] Simulating slow file system

Emmanuel Briot wrote: What makes disk filesystems slow is not the code run on the CPU...it's the operating speed of the disk-head actuator. It's not the filesystem that's slow, it's the DISK DRIVES that are slow. The disk I/O bottleneck is not the CPU overhead , it's the speed which the read/wr

Re: [opensuse] Simulating slow file system

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 The Wednesday 2007-11-14 at 09:28 +0100, Emmanuel Briot wrote: I was wondering whether there is any tool in linux that can be used to simulate a slow file system ? I was looking something else, and came by this that might help you. /usr/src/lin