hello,
first of all excuse me for my poor english :)
this is our lvs cluster:
director
|
switch
|
----------------------------------------------
| |
web/mailserver webmailserver
| |
----------------------------------------------
|
switch
|
----------------------------------------------
| |
fileserver databaseserver
we have a strange problem:
we don't use nor identd nor hostnamelookup but we have those symptoms...
when you request a page, the result is the same with a 1ko page or a 10 mo one,
you see connection, opening, then you wait between 1 and 3 seconds,
then everything appear very fast
we didn't have this problem before we "clustered" our installation
and dedicated a server for the files.
we add a smart array 641 controller with 4 discs (raid10) for the fileserver.
we tried quite all combinaisons of rsize, wsize, tcp, udp, version 2; version 3.
we don't understand how this cluster can respond slower than before.
(before we just used one server)
can it be the default stripe size of the file server (128 ko for raid10)?
...?
thanks a lot in advance for your responses/help. :)
alex.
---------------------------------
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hi alex-
can you share with us a network trace captured during a data transfer
that shows this performance anomaly?
-----Original Message-----
From: beooi alex [mailto:[email protected]]
Sent: Sunday, March 28, 2004 5:00 AM
To: [email protected]
Subject: [NFS] quick connection then wait but for what?
hello,
first of all excuse me for my poor english :)
this is our lvs cluster:
director
|
switch
|
----------------------------------------------
| |
web/mailserver webmailserver
| |
----------------------------------------------
|
switch
|
----------------------------------------------
| |
fileserver databaseserver
we have a strange problem:
we don't use nor identd nor hostnamelookup but we have those symptoms...
when you request a page, the result is the same with a 1ko page or a 10 mo one,
you see connection, opening, then you wait between 1 and 3 seconds,
then everything appear very fast
we didn't have this problem before we "clustered" our installation
and dedicated a server for the files.
we add a smart array 641 controller with 4 discs (raid10) for the fileserver.
we tried quite all combinaisons of rsize, wsize, tcp, udp, version 2; version 3.
we don't understand how this cluster can respond slower than before.
(before we just used one server)
can it be the default stripe size of the file server (128 ko for raid10)?
...?
thanks a lot in advance for your responses/help. :)
alex.
_____
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