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
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Filed under:

ssd

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disk-usage

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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.

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