Hi, I'm getting back to this issue on another customer, but here the two
machines that slow down
cannot be changed to Gigabit hardware as I did with the previous issue.
Because I'm starting to face this problem too frequently (on other
installations where the slow fd had so little data to write that the problem
was not interfering), I believe that I'm having a common problem on all of them.
Back then, you suggested me to check the autonegotiation on the switch, that
may actually make my ethernet card run at half-duplex. If this is the case, I
should see the machine (Solaris10 x86) show a console message during link-up
with an "half-duplex" setting. I checked the machine, and the console shows a
link-up in full-duplex mode.
Do you think that the switch may setup its port in half-duplex even if the x86
card says it's full-duplex?
If you think this may happen, is there any software tool that would let me
verify if the connection between two machines connected by the same switch is
running in full-duplex?
I already checked through 'netio' the transfer rate between various combination
of machines, and every one shows the same transfer rate of 10-11MB/s (both the
ones that runs a good-performance fd and the ones that runs a slow-performance
fd).
Thanx for any help.
Gabriele.
Gabriele Bulfon - Sonicle S.r.l.
Tel +39 028246016 Int. 30 - Fax +39 028243880
Via Felice Cavallotti 16 - 20089, Rozzano - Milano - ITALY
http://www.sonicle.com
----------------------------------------------------------------------------------
Da: Ryan Novosielski <[EMAIL PROTECTED]>
A: MaxxAtWork <[EMAIL PROTECTED]>
Cc: bacula-users@lists.sourceforge.net Gabriele Bulfon <[EMAIL PROTECTED]>
Data: 13 settembre 2006 19.40.54 CEST
Oggetto: Re: [Bacula-users] Slow FD
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My best guess, from personal experience, is that faulty autonegotiation
is to blame. The combination I see arise from this most often is a
machine that is running full duplex and a switch that has autonegotiated
to half. For servers and static ports, I don't mess around with this
stuff and I hard code them both to remove all doubt.
MaxxAtWork wrote:
> On 9/13/06, *Gabriele Bulfon* <[EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
> ...I also found this on the FD client machine:
>
> Name Mtu Net/Dest Address Ipkts Ierrs Opkts
> Oerrs Collis Queue
> lo0 8232 loopback localhost 17627 0 17627
> 0 0 0
> eri0 1500 ALTEA ALTEA 39578122 1190 47614287
> 605397 1343684 0
>
> ...maybe this can be the problem?
>
>
> Hmm... is it that eri0 interface working in half-duplex mode? I noticed
> that some Solaris machines happen to have mismatched duplex mode is
> mismatched between interface and the switch/router and that makes large
> transfers very slow ( e.g. you notice it with ftp transfers but not with
> interactive sessions)
>
> Regards
> --
> Maxx
>
>
> ------------------------------------------------------------------------
>
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- --
---- _ _ _ _ ___ _ _ _
|Y#| | | |\/| | \ |\ | | |Ryan Novosielski - Systems Programmer III
|$&| |__| | | |__/ | \| _| |[EMAIL PROTECTED] - 973/972.0922 (2-0922)
\__/ Univ. of Med. and Dent.|IST/AST - NJMS Medical Science Bldg - C630
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-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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