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- Newsgroups: comp.sys.hp
- Path: sparky!uunet!elroy.jpl.nasa.gov!sdd.hp.com!col.hp.com!fc.hp.com!craig
- From: craig@fc.hp.com
- (Craig Bryant)
- Subject: Re: HP 7xx problem with virtual memory (thrashing)
- Sender: news@fc.hp.com (news daemon)
- Message-ID: <C0G4A1.L9r@fc.hp.com>
- Date: Wed, 6 Jan 1993 18:49:12 GMT
- Distribution: comp.sys.hp
- References: <1993Jan5.194958.10898@alchemy.chem.utoronto.ca>
- Organization: Hewlett-Packard Workstation Kernel, Ft. Collins, CO
- X-Newsreader: TIN [version 1.1.1 PL6]
- Lines: 27
-
- System Admin (Mike Peterson) (system@alchemy.chem.utoronto.ca) wrote:
- : Some added data: after boot, and for several days, the system would
- : report that about 60 MB of our 128 MB was "free". After that, the "free"
- : memory would decline slowly, until the system would become useless
- : when about 5 MB or less was free. The number of processes remained more
- : or less the same (i.e. not a huge number of defunct/zombies eating
- : memory), and no task would show more "SIZE" than it would when the
- : system was booted. It seems there is a black hole for memory; we have
- : one program which may not be well-behaved about returning malloc'ed
- : memory, but the system MUST recover all such memory when the process
- : dies no matter how screwed up the process becomes.
-
- There is a memory leak associated with NFS in HP-UX 8.07. It is
- fixed by patch PHKL_1602. It is also fixes in HP-UX 9.0. The leak
- only occurs with some non-HP machines as clients that do reads in
- sizes greater than the block size of the server file system. It can
- also occur if a CDROM file system is export through NFS. In both
- cases it only occurs if the read returns 0 bytes. For example, when
- reading a 16k file the reads will normally be done in 8k chunks and
- the third read will return 0 bytes.
-
- Craig Bryant
- Workstation Kernel
- Hewlett Packard
- Fort Collins, CO
-
- I don't speak for HP, only for myself.
-