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05-02-2008, 04:59 AM
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 High CPU Wait Hi All Do you know why high CPU wait about 30% to 60% wait ? Is it CPU power problem or application problem ? Wed Apr 30 10:21:31 2008 Interval: 2 Cswitch 1329 Readch 3592.7K Syscall 8358 Writech 916.4K Kernel 38.1 |########### | Reads 2116 Rawin 132 User 12.3 |#### | Writes 1145 Ttyout 44803 Wait 49.5 |############## | Forks 0 Igets 1 Idle 0.1 |# | Execs 0 Namei 363 Runqueue 5.0 Dirblk 113 Network KBPS I-Pack O-Pack KB-In KB-Out Waitqueue 26.53 en0 145.0 215.0 145.4 84.6 60.4 lo0 0.1 1.0 1.0 0.1 0.1 PAGING MEMORY Faults 276 Real,MB 7692 Disk Busy% KBPS TPS KB-Read KB-Writ Steals 362 % Comp 58.5 hdisk3 100.2 1076.7 153.4 924.3 152.4 PgspIn 2 % Noncomp 42.4 hdisk2 4.5 134.3 3.0 0.0 134.3 PgspOut 2 % Client 1.0 hdisk1 2.5 8.0 2.0 0.0 8.0 PageIn 232 hdisk0 2.0 16.0 4.0 8.0 8.0 PageOut 73 PAGING SPACE Sios 177 Size,MB 3072      |
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05-02-2008, 04:59 AM
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| Re: High CPU Wait Wait time is when the processor has nothing to do because it is waiting for I/O (probably disk). hdisk3 seems to be very busy moonhkt wrote: > Hi All > > Do you know why high CPU wait about 30% to 60% wait ? > Is it CPU power problem or application problem ? > > Wed Apr 30 10:21:31 2008 Interval: 2 Cswitch 1329 > Readch 3592.7K > Syscall 8358 > Writech 916.4K > Kernel 38.1 |########### | Reads 2116 > Rawin 132 > User 12.3 |#### | Writes 1145 > Ttyout 44803 > Wait 49.5 |############## | Forks 0 > Igets 1 > Idle 0.1 |# | Execs 0 > Namei 363 > Runqueue 5.0 > Dirblk 113 > Network KBPS I-Pack O-Pack KB-In KB-Out Waitqueue 26.53 > en0 145.0 215.0 145.4 84.6 60.4 > lo0 0.1 1.0 1.0 0.1 0.1 PAGING > MEMORY > Faults 276 > Real,MB 7692 > Disk Busy% KBPS TPS KB-Read KB-Writ Steals 362 % > Comp 58.5 > hdisk3 100.2 1076.7 153.4 924.3 152.4 PgspIn 2 % > Noncomp 42.4 > hdisk2 4.5 134.3 3.0 0.0 134.3 PgspOut 2 % > Client 1.0 > hdisk1 2.5 8.0 2.0 0.0 8.0 PageIn 232 > hdisk0 2.0 16.0 4.0 8.0 8.0 PageOut 73 > PAGING SPACE > Sios 177 > Size,MB 3072 |
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05-02-2008, 04:59 AM
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| Re: High CPU Wait On Tue, 29 Apr 2008 22:14:16 -0700, Roy <aa4re@aa4re.ampr.org> wrote: >Wait time is when the processor has nothing to do because it is waiting >for I/O (probably disk). hdisk3 seems to be very busy Youz need a faster machine! I'm Guy Polis. I know about these things. <giggle> > > >moonhkt wrote: >> Hi All >> >> Do you know why high CPU wait about 30% to 60% wait ? >> Is it CPU power problem or application problem ? >> >> Wed Apr 30 10:21:31 2008 Interval: 2 Cswitch 1329 >> Readch 3592.7K >> Syscall 8358 >> Writech 916.4K >> Kernel 38.1 |########### | Reads 2116 >> Rawin 132 >> User 12.3 |#### | Writes 1145 >> Ttyout 44803 >> Wait 49.5 |############## | Forks 0 >> Igets 1 >> Idle 0.1 |# | Execs 0 >> Namei 363 >> Runqueue 5.0 >> Dirblk 113 >> Network KBPS I-Pack O-Pack KB-In KB-Out Waitqueue 26.53 >> en0 145.0 215.0 145.4 84.6 60.4 >> lo0 0.1 1.0 1.0 0.1 0.1 PAGING >> MEMORY >> Faults 276 >> Real,MB 7692 >> Disk Busy% KBPS TPS KB-Read KB-Writ Steals 362 % >> Comp 58.5 >> hdisk3 100.2 1076.7 153.4 924.3 152.4 PgspIn 2 % >> Noncomp 42.4 >> hdisk2 4.5 134.3 3.0 0.0 134.3 PgspOut 2 % >> Client 1.0 >> hdisk1 2.5 8.0 2.0 0.0 8.0 PageIn 232 >> hdisk0 2.0 16.0 4.0 8.0 8.0 PageOut 73 >> PAGING SPACE >> Sios 177 >> Size,MB 3072 |
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