Login or Register to Ask a Question and Join Our Community


UNIX for Beginners Questions & Answers

Unstable output of FFSB (Filesystem benchmark)

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums UNIX for Beginners Questions & Answers Unstable output of FFSB (Filesystem benchmark)
# 1  
Old 06-23-2016
Unstable output of FFSB (Filesystem benchmark)
I'm trying to benchmark a RAID-6 server using FFSB and the result is really unstable to detect the pattern.

Scenario -1:

Block-size - 65536 (64KB)
Number of threads - 10
Number of files - 10
Min and Max filesize - 400m
Read size - 400m
Direct IO - on
Random-read=off


Read throughput - 420MB/s (This is expected)


Scenario - 2:

Block-size - 65537 (64KB + 1 Byte)
Number of threads - 10
Number of files - 10
Min and Max filesize - 400m
Read size - 400m
Direct IO - on
Random-read=off

Read throughput - 30GB/s (this is not)


Can anyone explain this behaviour?
Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. AIX

Mount Filesystem in AIX Unable to read /etc/filesystem

Dear all, We are facing prolem when we are going to mount AIX filesystem, the system returned the following error 0506-307The AFopen call failed : A file or directory in the path name does not exist. But when we ls filesystems in the /etc/ directory it show -rw-r--r-- 0 root ... (2 Replies)
Discussion started by: m_raheelahmed
2 Replies

2. UNIX for Dummies Questions & Answers

hwo to find shared filesystem and local filesystem in AIX

Hi, I wanted to find out that in my database server which filesystems are shared storage and which filesystems are local. Like when I use df -k, it shows "filesystem" and "mounted on" but I want to know which one is shared and which one is local. Please tell me the commands which I can run... (2 Replies)
Discussion started by: kamranjalal
2 Replies

3. UNIX Benchmarks

unix benchmark thread?

Type: UltraSPARC IIIi 1,593 Mhz x2 Ram: 16G Disk: 2*70G fw scsi drives Load: db application kernel: Sunos5.10 pgms: compiled Sun cc -O2 ============================================================== BYTE UNIX Benchmarks (Version 3.11) System -- SunOS sun.spmbox.com 5.10... (2 Replies)
Discussion started by: mr_manny
2 Replies

4. UNIX Benchmarks

HP hardware benchmark

CPU: 1 x PA8600, 440MHz RAM: 1GB Hardware model: 9000/800/N4000-44 BYTE UNIX Benchmarks (Version 3.11) System -- HP-UX xxx B.11.11 U 9000/800 615379343 unlimited-user license Start Benchmark Run: Tue Apr 4 05:43:42 IST 2006 1 interactive users. Dhrystone 2 without register... (0 Replies)
Discussion started by: blowtorch
0 Replies

5. UNIX Benchmarks

Precompiled Benchmark software

Hi, Is there a precompiled binary for Solaris 8 available? I need to bench mark our Oracle server, as we are upgrading from SFv880 to SFv890. Both are fully loaded. I can't find a sun machine that I can compile the software on. Tks JohnHo (0 Replies)
Discussion started by: John Ho
0 Replies

6. Linux

Benchmark for Linux

I work in a computer company which sells computer configurations and parts of them. And I want to give a choice to customers. If they want to buy a PC with Linux installed, not Windows. But I find difficult to test the Graphic Cards in Linux OS. I have searched the web and I didn't found any... (2 Replies)
Discussion started by: vlatkop
2 Replies

7. UNIX Benchmarks

AMD-K5 Benchmark

AMD-K5 Processor at 133Mhz 32MB RAM 5 GB Hard Drive 10MB NIC 1MB ARC Graphics Card PS/1 Keyboard CD-ROM Floppy Drive Kickin' Fast BABY! hehe BYTE UNIX Benchmarks (Version 3.11) System -- FreeBSD evil-linux.net 5.0-RELEASE FreeBSD 5.0-RELEASE #0: Thu Jan 16 22:16:53 GMT 2003... (0 Replies)
Discussion started by: Phobos
0 Replies

8. UNIX Benchmarks

Ultra 10 benchmark

CPU/Speed: Ultrasparc IIi / 300MHz Ram: 128MB (Not enough) Motherboard: Sun Ultra 5/10 Bus: 4 PCI Cache: 512K Ecache Controller: Onboard IDE ATA/33 Disk: 40GB IBM ATA/100 Load: Low, 1 user, apache, samba, ipf, dtlogin disabled. Kernel: Solaris 5.10 b72 Kernel ELF?: yes pgms: I used the... (0 Replies)
Discussion started by: 98_1LE
0 Replies
Login or Register to Ask a Question

LEARN ABOUT DEBIAN

sys::filesystem::netbsd

Sys::Filesystem::Netbsd(3pm)				User Contributed Perl Documentation			      Sys::Filesystem::Netbsd(3pm)

NAME

       Sys::Filesystem::Netbsd - Return NetBSD filesystem information to Sys::Filesystem

SYNOPSIS

       See Sys::Filesystem.

INHERITANCE

	 Sys::Filesystem::Netbsd
	 ISA Sys::Filesystem::Unix
	   ISA UNIVERSAL

METHODS

       version ()
	   Return the version of the (sub)module.

ATTRIBUTES

       The following is a list of filesystem properties which may be queried as methods through the parent Sys::Filesystem object.

       fs_spec
	   Describes the block special device or remote filesystem to be mounted.

       fs_file
	   Describes the mount point for the filesystem. For swap partitions, this field should be specified as none. If the name of the mount
	   point contains spaces these can be escaped as 40.

       fs_vfstype
	   Dscribes the type  of  the  filesystem.

       fs_mntops
	   Describes the mount options associated with the filesystem.

       fs_freq
	   Used  for  these filesystems by the dump(8) command to determine which filesystems need to be  dumped.

       fs_passno
	   Used by the fsck(8) program to  determine the order in which filesystem checks are done at reboot time.

VERSION

       $Id: Netbsd.pm 128 2010-05-12 13:16:44Z trevor $

AUTHOR

       Jens Rehsack <rehsack@cpan.org> - <http://www.rehsack.de/>

COPYRIGHT

       Copyright 2009,2010 Jens Rehsack.

       This software is licensed under The Apache Software License, Version 2.0.

       <http://www.apache.org/licenses/LICENSE-2.0>

perl v5.10.1							    2010-05-18					      Sys::Filesystem::Netbsd(3pm)