Investigate disk writes further to find out which process writes to my SSD

Posted by zuba on Ask Ubuntu See other posts from Ask Ubuntu or by zuba
Published on 2012-11-13T09:31:47Z Indexed on 2012/11/13 11:21 UTC
Read the original article Hit count: 301

Filed under:

ssd

|

disk-usage

|

optimization

I try to minimize disk writes to my new SSD system drive. I'm stuck with iostat output:

~ > iostat -d 10 /dev/sdb
Linux 2.6.32-44-generic (Pluto)     13.11.2012  _i686_  (2 CPU)

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sdb               8,60       212,67       119,45   21010156   11800488

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sdb               3,00         0,00        40,00          0        400

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sdb               1,70         0,00        18,40          0        184

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sdb               1,20         0,00        28,80          0        288

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sdb               2,20         0,00        32,80          0        328

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sdb               1,20         0,00        23,20          0        232

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sdb               3,40        19,20        42,40        192        424

As I see there are writes to sdb. How can I resolve which process writes?

I know about iotop, but it doesn't show which filesystem is being accessed.

© Ask Ubuntu or respective owner

Related posts about ssd

SSD -- Special settings for SSD as secondary drive?

as seen on Super User - Search for 'Super User'
Hello all, I recently purchased an Intel SSD (X25-V 40GB) and I want to add it to my PC as a secondary drive (not the boot/system drive) so I can install specific software to it. Now, do I need to do anything special to ensure long life and peak performance with this as a secondary drive? I have… >>> More
Internal drives vs USB-3 with external SSD or eSata with External SSD

as seen on Super User - Search for 'Super User'
I have a need to carry VMWare Virtual Machines with me for work. These are very large files (each VM is 20GB or more) and I carry around about 40 to 50 VM's to simulate different software configurations for different client needs. Key: they won't fit on the internal hard drive of my current laptop… >>> More
"Windows detected a hard drive" issue in Windows 7 x64

as seen on Super User - Search for 'Super User'
I upgraded to the OCZ-Agility3 120GB from a 60 OCZ Vertex2 SSD. I cloned the drive from the Vertex to the new Agility. Everything seemed to have gone well and have not had any problems. Recently in the passed month I have gotten this error: I downloaded teh OCZToolboxMP and ran the SMART utility… >>> More
Disable SSD in ASUS 900 running Ubuntu 9.10

as seen on Super User - Search for 'Super User'
Recently I managed to completely mess up my ASUS 900, but I have no immediate desire to upgrade since it's only my travel laptop (and I'm waiting for a few months to see if anything interesting comes out). For now, though, I've hit an interesting problem. The 4GB SSD that is soldered onto the motherboard… >>> More
NTFS journal on different (SSD) disk

as seen on Server Fault - Search for 'Server Fault'
Some advanced file systems, like ZFS have the option of using SSD disks as a second level cache for the file system or for the journal. Is this possible with NTFS? >>> More

Related posts about disk-usage

Munin "Disk usage" is too high?

as seen on Server Fault - Search for 'Server Fault'
I've recently installed munin on my VMware client server and saw that the Disk usage shows about 80-90%. Everything else (cpu load, ram, etc.) seems to be running fine. I have only two virtual hosts on my server with 1000 users/day in total, so I don't think that's too much. Here is the graph for… >>> More
Windows 7 Reading Proper Disk Usage Statistics on Mounted Volumes

as seen on Super User - Search for 'Super User'
I'm running windows 7 with 2 x 1.5 TBYTE Drives. The second internal drive is setup as a mounted volume as C:\Archives Clicking computer icon in windows explorer, it only shows capacity stats for C: and Not C:\Archives Also, the usage stats that do show for C: show to be 100% capacity red - yet… >>> More
Disk usage treemap software for headless Linux

as seen on Server Fault - Search for 'Server Fault'
There are some programs which can display used disk space using a treemap, such as WinDirStat for Windows and KDirStat for KDE/Linux: I'm looking for something similar, but for a headless Linux box. Alternatively, what are other good ways to visualize used disk space with just SSH access? >>> More
Calculating disk usage

as seen on Stack Overflow - Search for 'Stack Overflow'
What is the best method for calculating disk usage using C++ only. My target platform is WinCE but most of the file operations are the same as normal Windows. >>> More
TFS 2008 Disk Usage

as seen on Stack Overflow - Search for 'Stack Overflow'
From within TFS 2008, is there a way to view the disk space taken up on the server by a project (or by all projects)? Or is this something that can only be done by looking directly at the underlying database? >>> More