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Conference ranger::pwosf

Title:PATHWORKS for OSF/1
Notice:see also NOTED::PWDOSWINV5 (PW client) & TURRIS::DIGITAL_UNIX
Moderator:CPEEDY::LONG
Created:Thu Apr 22 1993
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1874
Total number of notes:6870

1727.0. "PW 5.0g, Digital UNIX 3.2g (with necessary patches), HUGE memory leak" by NETRIX::"[email protected]" (Sri) Thu Jan 30 1997 16:53

Hi, I have a customer that does hospital systems software that deals with
Digital UNIX 3.2g and PW 5.0g on 1000A system(s).On one of the systems he
has., memory leak via MBUF is at a rate of 10MB every single day. After 20-25
days all the 255 Meg is exhausted and the system simply hangs.Becuase of this
HUGE leak., kernel can't even allocated enough buckets to perform simple
commands like "ps augx" etc. Currently running ECO-1.I know ECO-2 is
avaialable very recently., but customer is very sensitive about any further
patches., and/or upgrades on thiscritical system without a promise from us
that this is THE solution. I have been referred from turris::digital_unix
group Note# 8583. The leak is via MBUF s and MBLK s. vmstat -M output is the
indicative of these results. Any suggestions/help will greatly be appreciates
on this issue. Regards-Sri DECATL::SRI
[Posted by WWW Notes gateway]
T.RTitleUserPersonal
Name		DateLines
1727.1More info (vmstat outputs)NETRIX::"[email protected]"sriFri Jan 31 1997 17:2036
256Meg RAM and 1000A running 3.2g Unix
=======================================

Uptime: 2 days:

bucket#  element_size  elements_in_use  elements_free  bytes_in_use
1...
7           256        123589              27        31638784
8..

Total memory being used from buckets = 39258704 bytes
Total free memory in buckets = 1317872 bytes

MBLK        = 31537664 MBLKDATA    = 3935392



System is 2100 4/200 running 3.2f Unix
======================================
bucket#  element_size  elements_in_use  elements_free  bytes_in_use
    7           256         44749              51        11455744

Total memory being used from buckets = 16254928 bytes
Total free memory in buckets = 631504 bytes


Memory usage by type: Type and Number of bytes being used

MBUF        = 19456    MCLUSTER    = 32768    SOCKET      = 16128
PCB         = 19104    ROUTETBL    = 1376     IFADDR      = 1280
MBLK        = 11346688 MBLKDATA    = 1411424  STRHEAD     = 32768

Regards
-Sri
[email protected]
[Posted by WWW Notes gateway]
1727.2SMURF::MENNERit's just a box of Pax..Fri Jan 31 1997 22:226
    Sri,
    
    	Do you know which Pathworks transports they are using?  Also
    how many network interfaces are configured?  Looks like a pure
    MBLK/MBLKDATA leak to me, statistics for MBUFs/MCLUSTER look 
    ok.  Not aware of any MBLK leaks in the base operating system....
1727.3Running PW on IP.NETRIX::"[email protected]"SriFri Feb 07 1997 16:548
Hi,

	Thanks for response. Customer is running Pathworks on
IP.

Regards
-Sri
[Posted by WWW Notes gateway]
1727.4SMURF::MENNERit's just a box of Pax..Mon Feb 10 1997 22:176
    >>	Thanks for response. Customer is running Pathworks on IP.
    
    That would imply either leaks in xtiso (XTI over sockets) pseudo
    driver or leaks in the knb (kernel net bios) layer.  Not aware of
    any problems in xtiso - can't speak for knb...