Re: Tracing Filesystem Accesses

2011-05-16 Thread Stan Hoeppner
On 5/15/2011 4:21 AM, Boyd Stephen Smith Jr. wrote: In 4dcec70c.9020...@hardwarefreak.com, Stan Hoeppner wrote: On 5/14/2011 11:02 AM, Rainer Dorsch wrote: My Main reason for not doing it was that I do run the SSD partitionless to avoid partition alignment issues. There are no partition

Re: Tracing Filesystem Accesses

2011-05-15 Thread Boyd Stephen Smith Jr.
In 4dcec70c.9020...@hardwarefreak.com, Stan Hoeppner wrote: On 5/14/2011 11:02 AM, Rainer Dorsch wrote: My Main reason for not doing it was that I do run the SSD partitionless to avoid partition alignment issues. There are no partition alignment issues with SSDs. SSDs have no cylinders, no

Re: Tracing Filesystem Accesses

2011-05-15 Thread Rainer Dorsch
Am Samstag, 14. Mai 2011 schrieb Stan Hoeppner: On 5/14/2011 11:02 AM, Rainer Dorsch wrote: Am Freitag, 13. Mai 2011 schrieb Miles Fidelman: Stan Hoeppner wrote: On 5/12/2011 5:19 AM, Rainer Dorsch wrote: Sometimes though something is accessing data on the disk drives, which I do not

Re: Tracing Filesystem Accesses

2011-05-14 Thread Rainer Dorsch
Am Freitag, 13. Mai 2011 schrieb Miles Fidelman: Stan Hoeppner wrote: On 5/12/2011 5:19 AM, Rainer Dorsch wrote: Hello, I added an SSD in my system and moved the root filesystem to the SSD (which includes now also most of /home in my system). I spin down the regular hard disks

Re: Tracing Filesystem Accesses

2011-05-14 Thread Stan Hoeppner
On 5/14/2011 11:02 AM, Rainer Dorsch wrote: Am Freitag, 13. Mai 2011 schrieb Miles Fidelman: Stan Hoeppner wrote: On 5/12/2011 5:19 AM, Rainer Dorsch wrote: Sometimes though something is accessing data on the disk drives, which I do not understand. Did you relocate swap to the SSD? What

Re: Tracing Filesystem Accesses

2011-05-13 Thread Stan Hoeppner
On 5/12/2011 5:19 AM, Rainer Dorsch wrote: Hello, I added an SSD in my system and moved the root filesystem to the SSD (which includes now also most of /home in my system). I spin down the regular hard disks and the system is a lot more quiet than before :-) Sometimes though something is

Re: Tracing Filesystem Accesses

2011-05-13 Thread Doug
On 05/13/2011 02:53 AM, Stan Hoeppner wrote: On 5/12/2011 5:19 AM, Rainer Dorsch wrote: Hello, I added an SSD in my system and moved the root filesystem to the SSD (which includes now also most of /home in my system). I spin down the regular hard disks and the system is a lot more quiet

Re: Tracing Filesystem Accesses

2011-05-13 Thread Stan Hoeppner
On 5/13/2011 2:38 AM, Doug wrote: According to some information on the various lists, you should *not* run swap on a SSD, because the SSD has a limited number of read/write cycles, and swap uses them up way too quickly. That's pure FUD. Read the following soup to nuts:

Re: Tracing Filesystem Accesses

2011-05-13 Thread Miles Fidelman
Stan Hoeppner wrote: On 5/12/2011 5:19 AM, Rainer Dorsch wrote: Hello, I added an SSD in my system and moved the root filesystem to the SSD (which includes now also most of /home in my system). I spin down the regular hard disks and the system is a lot more quiet than before :-) Sometimes

Re: Tracing Filesystem Accesses

2011-05-13 Thread Paul E Condon
On 20110513_065059, Stan Hoeppner wrote: On 5/13/2011 2:38 AM, Doug wrote: According to some information on the various lists, you should *not* run swap on a SSD, because the SSD has a limited number of read/write cycles, and swap uses them up way too quickly. That's pure FUD.

Re: Tracing Filesystem Accesses

2011-05-13 Thread Bob McConnell
Paul E Condon wrote: On 20110513_065059, Stan Hoeppner wrote: On 5/13/2011 2:38 AM, Doug wrote: According to some information on the various lists, you should *not* run swap on a SSD, because the SSD has a limited number of read/write cycles, and swap uses them up way too quickly. That's

Re: Tracing Filesystem Accesses

2011-05-13 Thread Jochen Schulz
Bob McConnell: Before we go any further, lets get a couple of things sorted out. What type of SSD (Solid State Drive) are you all talking about here? If it contains Flash memory, What else do you have in mind? then yes, there is a limit to the number of ERASE cycles each sector can do.

Re: Tracing Filesystem Accesses

2011-05-13 Thread Paul E Condon
On 20110513_220818, Jochen Schulz wrote: Bob McConnell: Before we go any further, lets get a couple of things sorted out. What type of SSD (Solid State Drive) are you all talking about here? If it contains Flash memory, What else do you have in mind? then yes, there is a limit

Re: Tracing Filesystem Accesses

2011-05-13 Thread Stan Hoeppner
On 5/13/2011 1:34 PM, Bob McConnell wrote: Before we go any further, lets get a couple of things sorted out. What type of SSD (Solid State Drive) are you all talking about here? If it contains Flash memory, then yes, there is a limit to the number of ERASE cycles each sector can do. How

Re: Tracing Filesystem Accesses

2011-05-13 Thread Stan Hoeppner
On 5/13/2011 4:21 PM, Paul E Condon wrote: This seems like hi-jacking my sub-thread. I asked a question of Stan Hoeppner because I was puzzled about the status of the technology behind the techy-buzzword SSD. The unstated purpose of asking was to get some clarity, for me, as to what he was

Re: Tracing Filesystem Accesses

2011-05-13 Thread Paul E Condon
On 20110513_192743, Stan Hoeppner wrote: On 5/13/2011 4:21 PM, Paul E Condon wrote: This seems like hi-jacking my sub-thread. I asked a question of Stan Hoeppner because I was puzzled about the status of the technology behind the techy-buzzword SSD. The unstated purpose of asking was to

Tracing Filesystem Accesses

2011-05-12 Thread Rainer Dorsch
Hello, I added an SSD in my system and moved the root filesystem to the SSD (which includes now also most of /home in my system). I spin down the regular hard disks and the system is a lot more quiet than before :-) Sometimes though something is accessing data on the disk drives, which I do

Re: Tracing Filesystem Accesses

2011-05-12 Thread Juha Tuuna
On 12.5.2011 13:19, Rainer Dorsch wrote: Hello, I added an SSD in my system and moved the root filesystem to the SSD (which includes now also most of /home in my system). I spin down the regular hard disks and the system is a lot more quiet than before :-) Sometimes though something is

Re: Tracing Filesystem Accesses

2011-05-12 Thread Alex Mestiashvili
On 05/12/2011 12:19 PM, Rainer Dorsch wrote: Hello, I added an SSD in my system and moved the root filesystem to the SSD (which includes now also most of /home in my system). I spin down the regular hard disks and the system is a lot more quiet than before :-) Sometimes though something is

Re: Tracing Filesystem Accesses

2011-05-12 Thread Miles Fidelman
Rainer Dorsch wrote: Is there a way to trace all accesses to a directory tree (e.g. /mnt/disk) ? Is there another way to find out which data are accessed and if possible by which process? for files that are kept open by particular processes, you might play with fuser and lsof (see man