vmstat - For disk IO subsystem total statistics since last boot use the -D option
$ vmstat -D 27 disks 2 partitions 2766536 total reads 526906 merged reads 61184034 read sectors 21233780 milli reading 8849711 writes 3719803 merged writes 100480938 written sectors 181253052 milli writing 0 inprogress IO 12854 milli spent IO The last stat shows 12854 ms spent reading from the disk. Merged reads and merged writes happen when the kernel tries to combine requests for contiguous regions on the disk for a performance increase. If you want more detailed totals, use the -d option. An important note, vmstat can provide totals on disk performance whereas iostat provides data rate of change during the sample. -- Warm Regards, Tha.Suresh My experiences with Linux: http://thasulinux.wordpress.com Cooool Linux Tips & Tricks: http://gnutips.wordpress.com Free/Open Source Jobs: http://fossjobs.in -- Mailing list guidelines and other related articles: http://lug-iitd.org/Footer
