Re: Long checkpoint woe


Neil Truby said:

"Roy Mercer" <roy.mercer@xxxxxxxxx> wrote in message
news:1143575685.269708.17040@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Use /dev/null for if and then for of.
This will tell you if it is a read issue or write issue.
If they are the same then it is a real problem with the disks.

# time dd if=/dev/md/rdsk/d121 of=/dev/null bs=2k
10240+0 records in
10240+0 records out

real 0m14.24s
user 0m0.01s
sys 0m0.36s
# time dd of=/dev/md/rdsk/d121 if=/dev/null bs=2k
0+0 records in
0+0 records out

real 0m0.02s
user 0m0.00s
sys 0m0.01s

Post more information about the storage array.

It's a Sun StorEdge 3310 in JBOD format. I don;t think it is a hardware
problem (as I keep telling IBM too) because it's the same result on two
servers/arrays 300 miles apart.

61 seconds for a dd from disk to disk is DEFINITELY a hardware problem.
Are you SURE it's not running in RAID5 config?

--
Bye now,
Obnoxio

Information within this post contains forward looking statements within
the meaning of Section 27A of the Securities Act of 1933 and Section 21B
of the S E C Act of 1934. Statements that involve discussions with respect
to projections of future events are not statements of historical fact and
may be forward looking statements. Don't rely on them to make a decision.

The poster is not a reporting company registered under the Exchange Act of
1934.

I have received a life peerage from Her Majesty, who is not an officer,
minister or affiliate Labour party member.

I intend to recover my loan now, which could cause the parliamentary
majority to go down, resulting in losses for you. Today's Labour party
has: an accumulated deficit and a reliance on loans from officers and
affiliates to pay expenses. It is not an operating political party. The
party is going to need financing to continue as a going concern. A failure
to finance could cause the party to go out of business. This report shall
not be construed as any kind of investment advice or solicitation. You can
lose all your money by investing in this party.
.

Relevant Pages

  • Re: Long checkpoint woe
    ... of the S E C Act of 1934. ... minister or affiliate Labour party member. ... party is going to need financing to continue as a going concern. ... not be construed as any kind of investment advice or solicitation. ...
    (comp.databases.informix)
  • Re: A European Technical Conference on Informix
    ... of the S E C Act of 1934. ... minister or affiliate Labour party member. ... party is going to need financing to continue as a going concern. ... not be construed as any kind of investment advice or solicitation. ...
    (comp.databases.informix)
  • Re: Tampa Florida
    ... of the S E C Act of 1934. ... minister or affiliate Labour party member. ... party is going to need financing to continue as a going concern. ... not be construed as any kind of investment advice or solicitation. ...
    (comp.databases.informix)
  • Re: Informix-SQL "compability"
    ... of the S E C Act of 1934. ... minister or affiliate Labour party member. ... party is going to need financing to continue as a going concern. ... not be construed as any kind of investment advice or solicitation. ...
    (comp.databases.informix)
  • Re: Using Cpio to load informix from CD
    ... of the S E C Act of 1934. ... minister or affiliate Labour party member. ... party is going to need financing to continue as a going concern. ... not be construed as any kind of investment advice or solicitation. ...
    (comp.databases.informix)