9 More Discussions You Might Find Interesting
1. Solaris
Hi Experts,
Our servers running Solaris 10 with SAP Application. The memory utilization always >90%, but the process on SAP is too less even nothing.
Why memory utilization on solaris always looks high?
I have statement about memory on solaris, is this true:
Memory in solaris is used for... (4 Replies)
Discussion started by: edydsuranta
4 Replies
2. Solaris
Hello solaris experts,
Being new to solaris containers, from Linux, feeling difficulty in understanding certain concepts. Hope somebody can help me here.
I understand that, & some questions ....
Locked memory -- memory which will not be swapped out at any cause.
is this for... (0 Replies)
Discussion started by: thegeek
0 Replies
3. UNIX for Advanced & Expert Users
I was running a program and it stopped and showed "Out of Memory!". at that time, the RAM used by this process is around 4G and the free memory size of the machine is around 30G. Does anybody know what maybe the reason? this program is written with Perl. the OS of the machine is Solaris U8. And I... (1 Reply)
Discussion started by: lilili07
1 Replies
4. Solaris
Is it possible to restrict physical memory in solaris zone with zone.max-locked-memory just like we can do with rcapd ? I do not want to used rcapd (1 Reply)
Discussion started by: fugitive
1 Replies
5. Programming
Hi,
I'm trying to learn how to manage memory when I have to deal with lots of data.
Basically I'm indexing a huge file (5GB, but it can be bigger), by creating tables that
holds offset <-> startOfSomeData information. Currently I'm mapping the whole file at
once (yep!) but of course the... (1 Reply)
Discussion started by: emitrax
1 Replies
6. Solaris
Hi,
Im working on Solaris 9 on SPARC-32 bit running on an Ultra-80, and I have to find out the following:-
1. Total Physical Memory in the system(total RAM).
2. Available Physical Memory(i.e. RAM Usage)
3. Total (Logical) Memory in the system
4. Available (Logical) Memory.
I know... (4 Replies)
Discussion started by: 0ktalmagik
4 Replies
7. AIX
Hi,
Would any one be so kind to explain me :
are ulimits defined for each user seperately ? When ?
Specialy what is the impact of :
max locked memory
and
virtual memory
on performance of applications for a user.
Many thanks.
PS :
this is what I can see in MAN :
ulimit ]
... (5 Replies)
Discussion started by: big123456
5 Replies
8. HP-UX
Refer from title:
How can i get memory used or anything that can show memory from sar file
example on solaris:-
we can use sar with option to show memory used at time that sar crontab run.
on HP-UX, it not has option to see memory used. But i think it may be have some parameter or some... (1 Reply)
Discussion started by: panithat
1 Replies
9. Programming
Hi, I try to marshal a unsigned int and a char * into a buffer, and then unmarshal them later to get them out. I need to put the char * in the front and unsigned int at the end of the buffer. However, my system always give me "BUS ERROR". I am using Sun Sparcs Sloris 2.10.
My code to marshal... (6 Replies)
Discussion started by: nj302
6 Replies
LEARN ABOUT CENTOS
perf-bench
PERF-BENCH(1) perf Manual PERF-BENCH(1)
NAME
perf-bench - General framework for benchmark suites
SYNOPSIS
perf bench [<common options>] <subsystem> <suite> [<options>]
DESCRIPTION
This perf bench command is a general framework for benchmark suites.
COMMON OPTIONS
-f, --format=
Specify format style. Current available format styles are:
default
Default style. This is mainly for human reading.
.ft C
% perf bench sched pipe # with no style specified
(executing 1000000 pipe operations between two tasks)
Total time:5.855 sec
5.855061 usecs/op
170792 ops/sec
.ft
simple
This simple style is friendly for automated processing by scripts.
.ft C
% perf bench --format=simple sched pipe # specified simple
5.988
.ft
SUBSYSTEM
sched
Scheduler and IPC mechanisms.
mem
Memory access performance.
all
All benchmark subsystems.
SUITES FOR sched
messaging
Suite for evaluating performance of scheduler and IPC mechanisms. Based on hackbench by Rusty Russell.
Options of messaging
-p, --pipe
Use pipe() instead of socketpair()
-t, --thread
Be multi thread instead of multi process
-g, --group=
Specify number of groups
-l, --loop=
Specify number of loops
Example of messaging
.ft C
% perf bench sched messaging # run with default
options (20 sender and receiver processes per group)
(10 groups == 400 processes run)
Total time:0.308 sec
% perf bench sched messaging -t -g 20 # be multi-thread, with 20 groups
(20 sender and receiver threads per group)
(20 groups == 800 threads run)
Total time:0.582 sec
.ft
pipe
Suite for pipe() system call. Based on pipe-test-1m.c by Ingo Molnar.
Options of pipe
-l, --loop=
Specify number of loops.
Example of pipe
.ft C
% perf bench sched pipe
(executing 1000000 pipe operations between two tasks)
Total time:8.091 sec
8.091833 usecs/op
123581 ops/sec
% perf bench sched pipe -l 1000 # loop 1000
(executing 1000 pipe operations between two tasks)
Total time:0.016 sec
16.948000 usecs/op
59004 ops/sec
.ft
SUITES FOR mem
memcpy
Suite for evaluating performance of simple memory copy in various ways.
Options of memcpy
-l, --length
Specify length of memory to copy (default: 1MB). Available units are B, KB, MB, GB and TB (case insensitive).
-r, --routine
Specify routine to copy (default: default). Available routines are depend on the architecture. On x86-64, x86-64-unrolled,
x86-64-movsq and x86-64-movsb are supported.
-i, --iterations
Repeat memcpy invocation this number of times.
-c, --cycle
Use perf's cpu-cycles event instead of gettimeofday syscall.
-o, --only-prefault
Show only the result with page faults before memcpy.
-n, --no-prefault
Show only the result without page faults before memcpy.
memset
Suite for evaluating performance of simple memory set in various ways.
Options of memset
-l, --length
Specify length of memory to set (default: 1MB). Available units are B, KB, MB, GB and TB (case insensitive).
-r, --routine
Specify routine to set (default: default). Available routines are depend on the architecture. On x86-64, x86-64-unrolled,
x86-64-stosq and x86-64-stosb are supported.
-i, --iterations
Repeat memset invocation this number of times.
-c, --cycle
Use perf's cpu-cycles event instead of gettimeofday syscall.
-o, --only-prefault
Show only the result with page faults before memset.
-n, --no-prefault
Show only the result without page faults before memset.
SEE ALSO
perf(1)
perf 06/30/2014 PERF-BENCH(1)