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03-18-2005 05:06 PM
03-18-2005 05:06 PM
Slow - listener-thread: err = -27001 -25573
We are using HPUX 11i with MC/SG running Informix 9.4,recently we are getting error message in informix log.
listener-thread: err = -27001: oserr = 0: errstr = : Read error occurred during connection attempt.
listener-thread: err = -25573: oserr = 233: errstr = : Network driver cannot accept a connection on the port. System error = 233.
But there is no error message in system logs.
I also have checked on the informix level there is no any error on the Database level also.The user is complaining the application is very slow recently.
How do I overcome this problem?
Thanks & Regards
Sri
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03-19-2005 12:30 AM
03-19-2005 12:30 AM
Re: Slow - listener-thread: err = -27001 -25573
Do you have memeory problems on the server, maybe post output of:
swapinfo -tam
sar -v 1 1
sar -w 1 1
T
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03-20-2005 06:33 PM
03-20-2005 06:33 PM
Re: Slow - listener-thread: err = -27001 -25573
Below are the result.
swapinfo -tam
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 4096 0 4096 0% 0 - 1 /dev/vg00/lvol2
reserve - 1658 -1658
memory 3152 1688 1464 54%
total 7248 3346 3902 46% - 0 -
sar -v 1 1
15:31:42 text-sz ov proc-sz ov inod-sz ov file-sz ov
15:31:43 N/A N/A 130/1404 0 890/1604 0 940/5010 0
sar -w 1 1
15:31:53 swpin/s bswin/s swpot/s bswot/s pswch/s
15:31:54 0.00 0.0 0.00 0.0 1407
Thanks & Regards
Sri
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03-20-2005 11:49 PM
03-20-2005 11:49 PM
Re: Slow - listener-thread: err = -27001 -25573
The solution is to change your onconfig file to increase the number of network poll threads under NETTYPE. I like to run them in separate VPs, to free up the CPU VPs for SQL work.
I use soctcp as the connection type in the sqlhosts. The onconfig parameter to configure 2 poll threads instead of one is this:
NETTYPE soctcp,2,100,NET
That configures 2 soc VPs with initial memory for 100 connections each.
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03-22-2005 08:06 PM
03-22-2005 08:06 PM
Re: Slow - listener-thread: err = -27001 -25573
Sorry for the late reply..
We already configured the
NETTYPE soctcp,2,400,NET
Is that anything else that could cause this problem.On the OS level what else i can monitor and also on the Database level.
Thanks & Regards
sri
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03-22-2005 08:17 PM
03-22-2005 08:17 PM
Re: Slow - listener-thread: err = -27001 -25573
NETTYPE soctcp,4,200,NET ?
What about your free CPU? Is there none left?
You may consider putting some local connections on ipcshm instead of soctcp, to reduce workload on those threads.
Other than that, make sure you are up-to-date on patches.