Pete French wrote:
1 megabit = 106 = 1,000,000 bits which is equal to 125,000 bytes.
you are assuming eight bits per byte - but this is a serial line so
you should use ten bits per byte instead.
-pete.
That was a rule of thumb in the heyday of async serial lines, which used
a start
However, ethernet at 100Mbit is 4B5B coded at a 125mhz rate. So the raw
synchronous data rate really is 12.5Mbytes/s. Minus the sync preamble
of 8 bytes per packet and the mandatory inter-frame-gap of 12 bytes
that's a physical layer rate of (12.5M * (1500/(1500+20))) or 12.34Mbyte/s.
You
That was a rule of thumb in the heyday of async serial lines, which used
a start and stop bit per byte.
However, ethernet at 100Mbit is 4B5B coded at a 125mhz rate. So the raw
Errr, 4B5B *is* 10 bits per byte surely?
Even in the later days of modems this rule applied less and less,
Pete French wrote:
However, ethernet at 100Mbit is 4B5B coded at a 125mhz rate. So the raw
Errr, 4B5B *is* 10 bits per byte surely?
...
Gig ether is mainly 8B10, as is Firewire, SATA, FibreChannel and a
Mind you, it assumes that you know the real bit rate, which in the
case of 100baseT
Alfred Perlstein wrote:
* Bartosz Stec [EMAIL PROTECTED] [081003 07:23] wrote:
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over network. Tested with both SAMBA and NFS. Is it normal?
FreeBSD 7.1-PRERELEASE #0: Sat Sep 6 01:52:12
On Mon, Oct 06, 2008 at 09:02:33AM +0200, Bartosz Stec wrote:
Alfred Perlstein wrote:
* Bartosz Stec [EMAIL PROTECTED] [081003 07:23] wrote:
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over network. Tested with both SAMBA and NFS.
Jeremy Chadwick wrote:
On Mon, Oct 06, 2008 at 09:02:33AM +0200, Bartosz Stec wrote:
Alfred Perlstein wrote:
* Bartosz Stec [EMAIL PROTECTED] [081003 07:23] wrote:
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over
On Mon, Oct 06, 2008 at 10:29:35AM +0300, Andrei Kolu wrote:
...
I remember when on FreeBSD 4.x I was able to copy files from samba and
to samba up to 12MB/s on 100Mbit lan.
This part seems unlikely, particularly as bit rates are measured in
decimal millions not computer millions.
Jeremy Chadwick pisze:
On Mon, Oct 06, 2008 at 09:02:33AM +0200, Bartosz Stec wrote:
Alfred Perlstein wrote:
* Bartosz Stec [EMAIL PROTECTED] [081003 07:23] wrote:
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over
Bartosz Stec wrote:
BTW overall SAMBA performance still sucks on 7.1-pre as much as on
RELENG_5 ...:( - 7.5 MB/s peak.
7.5MB is 75% effeciency of a 100mbit card. Not amazing, but
not sucks.
Where do you see faster performance?
Between windows machines on the same hardware or linux
Clifton Royston wrote:
On Mon, Oct 06, 2008 at 10:29:35AM +0300, Andrei Kolu wrote:
...
I remember when on FreeBSD 4.x I was able to copy files from samba and
to samba up to 12MB/s on 100Mbit lan.
This part seems unlikely, particularly as bit rates are measured in
decimal millions
1 megabit = 106 = 1,000,000 bits which is equal to 125,000 bytes.
you are assuming eight bits per byte - but this is a serial line so
you should use ten bits per byte instead.
-pete.
___
freebsd-stable@freebsd.org mailing list
On Mon, Oct 06, 2008 at 08:38:13AM -0400, Adam McDougall wrote:
Bartosz Stec wrote:
BTW overall SAMBA performance still sucks on 7.1-pre as much as on
RELENG_5 ...:( - 7.5 MB/s peak.
7.5MB is 75% effeciency of a 100mbit card. Not amazing, but
not sucks.
Where do you see faster
* Bartosz Stec [EMAIL PROTECTED] [081003 07:23] wrote:
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over network. Tested with both SAMBA and NFS. Is it normal?
FreeBSD 7.1-PRERELEASE #0: Sat Sep 6 01:52:12 CEST 2008
fxp0: Intel
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over network. Tested with both SAMBA and NFS. Is it normal?
FreeBSD 7.1-PRERELEASE #0: Sat Sep 6 01:52:12 CEST 2008
fxp0: Intel 82801DB (ICH4) Pro/100 Ethernet port 0xc800-0xc83f mem
On Friday 03 October 2008, Bartosz Stec wrote:
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over network. Tested with both SAMBA and NFS. Is it normal?
Yes. You don't want to use polling unless you set kern.hz to 1 or
something in
Pieter de Goeje wrote:
On Friday 03 October 2008, Bartosz Stec wrote:
Hello again :)
With POLLING enabled I experience about 10%-25% performance drop when
copying files over network. Tested with both SAMBA and NFS. Is it normal?
Yes. You don't want to use polling unless you set kern.hz to
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