ssa performances

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

File alignment and performances... (difficult)

Hello ! I will use my best english possible to explain my objective. I'm french so pardon for the lack of precision... So, what i would like to do in shell script (but you will possibly answer ''not possible in script'' have to use low level langage or something like that) is described below....

2. Solaris

Performances with RAID 5

Hello every body, Maybe someone could help me. I have a SUN Server with 6 disks, each of 150 Gb. I have mounted the first two disk in mirror (RAID1) for the system files. I have mounted 3 disks in RAID5 for users file systems. I kept the last one as spare and I have mounted it standalone...

3. Linux

grep -f CPU performances

Hi I would like to thank you all for this excellent forum. Today i tried to compare two files and i get some problem with it. I have two files and i want to get all the data that match the first file like this File1 (pattern file) ___________________________ 9007 9126 9918 9127 ...

4. AIX

Removing Faulty Disk SSA

Hi Experts, I have configured A D40 Array. There is an faulty disk which is not part of an raid volume but shows fault in the diagnostics. pdisk15 U0.1-P1-I1/Q1-W40AA83CC2400D SSA160 Physical Disk Drive ( MB) Is there a way to stop this...

5. AIX

Procedure for removing SSA array

Hi All, What's the proper procedure for removing SSA arrays? Is the procedure like these? - rmdev ssa disk - physical turn off the ssa - cfgmgr There's no more filesystem or logical volume on it. It's just pdisk and hdisk. Thanks in advance, itik

6. AIX

mirroring ssa to san

Hi guys, I'd like to share my migration/mirroring of ssa to san. No downtime for users, probably I/O performance. here's the step: 1 After the lun had been carved on the SAN and the connections had been done on AIX fiber card 2 “lspv” and look for the new SAN hdisk? on the bottom, say...

7. AIX

migrate from ssa to san

Hi, Do you have procedures to migrate ssa disks to san disk? I don't have testing environment and I want my file system be migrated one at a time. I want it to be fast, I have only 15-20 hours to do it on every sunday 1PM till monday 7am. My largest file system is about 150G. The AIX is...

8. AIX

Problem with a SSA drive

I've a problem with an IBM StorageWorks - Seagate SSA drive, model ST373453LC (IBM P/N 24P3733, Type S53D073, 72,8 GB 15K - USCSI 4 - 320 SSA). I bought this disk used but working; it came from an unknown IBM SSA storage array. I've removed the SCA - SSA adapter (IBM 18P3051 - 001 - R0) and i tried...

9. AIX

updating ssa

I am in the process of updating ssa adapters, drives and enclosures and wanted to know if there are any caveats that anyone would like to share. The documentation is not very clear on the ordering of the updates. Any tips would be appreciated.

10. AIX

RS6000 SSA Raid question

Hi Can I add disks on the fly to extend the capacity of an existing RAID 5 volume? It's created on a 4P Advanced SSA Raid Adapter. I need to extend a volume group, so I figured it would be easiest to extend the "physical disk" which is a RAID5 volume. Thanks.

LEARN ABOUT NETBSD

i386_pmc_startstop

I386_PMC_INFO(2)					   BSD/i386 System Calls Manual 					  I386_PMC_INFO(2)

NAME

     i386_pmc_info, i386_pmc_startstop, i386_pmc_read -- interface to CPU performance counters

LIBRARY

     i386 Architecture Library (libi386, -li386)

SYNOPSIS

     #include <sys/types.h>
     #include <machine/sysarch.h>
     #include <machine/specialreg.h>

     int
     i386_pmc_info(struct i386_pmc_info_args *ia);

     int
     i386_pmc_startstop(struct i386_pmc_startstop_args *ssa);

     int
     i386_pmc_read(struct i386_pmc_read_args *ra);

DESCRIPTION

     These functions provide an interface to the CPU performance counters on the 586-class and 686-class processors.

     i386_pmc_info() will return information about the available CPU counters.	The information is returned in ia having the following structure:

     struct i386_pmc_info_args {
	     int     type;
	     int     flags;
     };

     The type member describes the class of performance counters available.  Valid values are:

	   PMC_TYPE_NONE    No PMC support
	   PMC_TYPE_I586    586-class CPUs
	   PMC_TYPE_I686    686-class Intel CPUs
	   PMC_TYPE_K7	    686-class AMD CPUs

     The flags member describes additional capabilities of the processor.  Valid values are:

	   PMC_INFO_HASTSC  CPU has time-stamp counter

     i386_pmc_startstop() is used to start and stop the measurement of the CPU performance counters.  The argument ssa has the following struc-
     ture:

     struct i386_pmc_startstop_args {
	     int counter;
	     uint64_t val;
	     uint8_t event;
	     uint8_t unit;
	     uint8_t compare;
	     uint8_t flags;
     };

     The counter specified by the member counter is started if the member flags has PMC_SETUP_KERNEL or PMC_SETUP_USER set, otherwise the counter
     is stopped.  The initial value of the counter is set to val.  Additional values for the flags member are PMC_SETUP_EDGE and PMC_SETUP_INV.
     The event member specifies some event written to the control register.  The unit member specifies the measurement units.  The compare member
     is a mask for the counter.

     i386_pmc_read() will return information about a specific CPU counter measured during the last measurement period determined by the calling of
     i386_pmc_startstop().  The information is returned in ra having the following structure:

     struct i386_pmc_read_args {
	     int counter;
	     uint64_t val;
	     uint64_t time;
     };

     The counter to read should be specified by the counter member.  Counters are numbered from 0 to PMC_NCOUNTERS.  The value of the counter is
     returned in the val member.  The time since epoch, measured in CPU clock cycles, is returned in the time member.

RETURN VALUES

     Upon successful completion zero is returned, otherwise -1 is returned on failure.

BSD
								 November 10, 2001							       BSD

AIX