[Gllug] Samba / W2K file sharing comparison
Xander D Harkness
xander at harkness.co.uk
Tue Mar 4 23:23:29 UTC 2003
If anyone is looking for an argument to replace windows boxes with Linux
at work, I thought you might like to see this study on
searchenterpriselinux.
The bit I really like is:
"But these figures do not tell the complete story. With Windows 2000
Advanced Server, the FAT32 system failed at 32 clients, the NTFS file
system I/O dropped to 12 MB/s at 60 concurrent clients. By comparison,
the Samba on Linux system still delivered I/O at 29 MB/s with 60
concurrent clients. Each client was running a simulated Ziff-Davis
NetBench test."
http://searchenterpriselinux.techtarget.com/qna/0,289202,sid39_gci880608,00.html
IT shops want to know if Linux and Samba can match the scalability of
Microsoft's Windows 2000 and its print and file servers. Can the
Linux/Samba team make the grade in enterprise environments?
Terpstra: Every system has inherent design limitations that become its
bottleneck. Generally speaking, the slowest component that is involved
in the services being evaluated will be the primary limiting factor in
the benchmarks obtained. Workloads that are used to measure scalability
should be reflective of the type of work that the file server will be
expected to handle.
So, this results in clear limitations when comparing benchmark figures
and goes a long way toward explaining some of the wide gaps that have
been reported in published Samba versus Windows file serving performance
reports.
On a system that has a file I/O capacity of 450MBytes/sec, 1 gigabit
ethernet, and 1 Gigabyte of RAM:
* MS Windows 2000 Advanced Server:
FAT32 file system: Peak I/O 37.6 MB/s at 20 clients
NTFS file system: Peak I/O 27 MB/s at 10 clients
* Samba 2.2.5 on Linux 2.4.18:
Ext2 file system: Peak I/O 36 MB/s at 5 clients
But these figures do not tell the complete story. With Windows 2000
Advanced Server, the FAT32 system failed at 32 clients, the NTFS file
system I/O dropped to 12 MB/s at 60 concurrent clients. By comparison,
the Samba on Linux system still delivered I/O at 29 MB/s with 60
concurrent clients. Each client was running a simulated Ziff-Davis
NetBench test.
Have fun
Xander
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