HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Reference (OS 3.1 - Page 182

SPECIFIERS None. RESTRICTIONS None. EXAMPLES The following example displays one iteration of a histogram of service times for system chunklets: cli% histch -iter 1 12:42:57 10/20/04 Time (millisec Ldid Ldname LdCh Pdid PdCh 0.26 0.53 1.05 2.1 4.2 8.4 17 34 67 135 2 tp-0-sa-0.0 1 21 0 0 0 0 0 0 0 0 0 0 0 2 tp-0-sa-0.0 0 45 0 0 0 0 0 0 0 0 0 0 0 1 tp-0-sa-0.1 1 20 0 0 0 0 0 0 1 0 0 0 0 1 tp-0-sa-0.1 0 42 0 0 0 0 0 0 1 0 0 0 0 0 admin.usr.0 1 22 3 0 0 0 1 0 3 2 0 0 0 0 admin.usr.0 0 44 3 0 0 0 0 1 3 2 0 0 0 total 0 0 0 1 1 8400 0 For the previous example, before the histch command was issued, the setstatch start command was issued for chunklets 0 and 1 on logical disks admin.usr.0, tp-0-sa-0.1,and tp-0-sa-0.0. NOTES • The setstatch command must be issued to enable statistics collection on chunklets before issuing the histch command. See "setstatch" (page 331) for additional information. • Each service time histogram column shows the number of accesses with service times between the point in time shown in the column's heading to the point in time shown in the heading of the column to its right (or infinity for the last column). Unless all columns are shown, the first column shows the number of accesses with service times less than the heading of the second column. • Each I/O size histogram column shows the number of accesses with I/O size between the size shown in the column's heading to the size shown in the heading of the column to its right (or infinity for the last column). 182 Hist Commands