11-03-2008
I can usually zero in with a combination of top and lsof. A process that is hammering a disk will be a top process and it will have files open on the file system in question. If I stop the process and disk usage drops off, I have my process. But it can be a bad disk too... soft errors result in very slow performance. Can also be that the box is out of memory.
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LEARN ABOUT DEBIAN
bootchartd
BOOTCHARTD(1) General Commands Manual BOOTCHARTD(1)
NAME
bootchartd - collects process information, CPU statistics and disk usage statistics
SYNOPSIS
bootchartd [start|stop] [bootchart_init=INIT]
DESCRIPTION
bootchartd collects process information, CPU statistics and disk usage statistics from the /proc/ file system. The accumulated log file
may later be visualized using bootchart(1).
bootchartd is commonly used to profile the boot process for the purpose of speeding it up. In this case, it is started by the kernel as
the init process. This is configured by adding the init=/sbin/bootchartd option to the kernel command line -- either interactively or by
editing the bootloader's configuration file. Please refer to the documentation of your bootloader for details (e.g. lilo, grub or yaboot).
After bootchartd is initialized during the boot process, it will start the default init process (/sbin/init) to proceed with the regular
bootup. If, however, an alternative init process is used (e.g. (/sbin/initng), that process may be specified using the bootchart_init=INIT
kernel command line parameter.
Another possibility for using bootchartd is monitoring the resource usage of a specific application or the running system in general. In
this case, bootchartd is started interactively by running bootchartd start and stopped using bootchartd stop.
FILES
/var/log/bootchartd.tgz
default output file
/etc/bootchartd.conf
default configuration file
SEE ALSO
bootchart(1), bootchartd.conf(5)
AUTHOR
bootchart was written by Ziga Mahkovec <ziga.mahkovec@klika.si>.
This manual page was written by Jorg Sommer <joerg@alea.gnuu.de>, for the Debian project (but may be used by others).
2006-03-05 BOOTCHARTD(1)