Subject: hp380 hangs with high load...
To: None <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 09/11/1994 16:57:40
Maybe someone has an idea about this...
I have a 380 that just became the CS Dept.'s anon ftp server. It's
running a fairly cpu-intensive ftpd (wu's). What happens is when there
are about 5 connections the machine's load goes gonzo (these things are
chewing up roughly 17% of the cpu each - when one drops out, the rest
pick up the slack...) Well, after a while of this, I guess the machine
decides it wants to page...as soon as the drive light begins blinking,
the machine hangs. It's not like the kernel hangs, though, because you
can telnet to the machine and it will connect, and you can ping the
machine and it will respond. However, no daemon will fork, and hitting
return on the console (since getty just restarts on the console with a
NULL login:) causes the console to hang - like getty can't restart. This
leads me to believe that the kernel is having a problem somewhere inside
of exec...like it can't actually create the new process. To further
demonstrate this, I can type in a bogus login/password on the console (so
that login(1) is running, not getty). If the machine `hangs' before
login(1) times out, the console still responds, but ^D to get getty back
hangs the console.
This particular 380 (santiam) has 32meg of memory. I cannot reproduce
this behavior on a machine with less memory (even down to 8meg). I do
not have a machine with more at this time, but I will be getting a 433
with 64meg fairly soon. Interestingly enough, I have seen the same
behavior on a 370, also with 32meg.
The machine is running sources sup'd roughly 2 weeks ago. (I have a 433,
helix, running newer, but I haven't had the opportunity to upgrade
santiam yet.) My kernel config follows the sig...
If anybody has any ideas, I'd really appreciate it...
PS...I thought I saw that mycroft made some changes to pmap on the hp300,
and the i386 too, I believe. I also notice that the sup scan hasn't gone off
yet. Can one of the core folk either run the sup scan or e-mail me those
changes to I can try them out? They may be totally unrelated, but I'd be
interested in giving them a shot, at least...
Jason R. Thorpe email@example.com 754-1554
Systems Administrator CSWest Room 12 737-5567
Oregon State University
# The CS Dept's new FTP server - SANTIAM
cpu "HP380" # includes 425t, 425s, 433s
# Need to set locally
timezone 8 dst
# Standard system options
options SWAPPAGER # swap pager (anonymous and swap space)
options VNODEPAGER # vnode pager (mapped files)
options DEVPAGER # device pager (mapped devices)
options "COMPAT_43" # compatibility with 4.3BSD binaries
options "COMPAT_44" # compatibility with 4.4BSD binaries
options "COMPAT_09" # compatibility with NetBSD 0.9
options SYSVSHM # System V shared memory
options SYSVSEM # System V semaphores
options SYSVMSG # System V message queues
options KTRACE # system call tracing support
options "NKMEMCLUSTERS=1024" # 4K pages in kernel malloc pool
# Filesystem options
options FIFO # POSIX fifo support (in all filesystems)
options FFS,QUOTA # fast filesystem with user and group quotas
options NFSCLIENT # Sun NFS-compatible client
options NFSSERVER # Sun NFS-compatible server
options UNION # Union filesystem
options KERNFS # kernel data-structure filesystem
options FDESC # user file descriptor filesystem
options PROCFS # /proc filesystem
# Networking options
options INET # Internet protocols
options "TCP_COMPAT_42" # compatibility with 4.2BSD TCP/IP
options GATEWAY # IP packet forwarding
options MULTICAST # IP Multicast (redundant)
options MROUTING # Multicast routing support
# Options for HP hardware
options FPSP # floating point emulation for MC68040
# To support the double-autoconf slow hpib disks - LOCAL!!!!! - thorpej
config netbsd root on rd0 swap on rd0b
master hpib0 at scode7
master hpib1 at scode?
master hpib2 at scode?
master hpib3 at scode?
disk rd0 at hpib? slave 0
disk rd1 at hpib? slave 1
disk rd2 at hpib? slave 2
disk rd3 at hpib? slave 3
disk rd4 at hpib? slave ?
disk rd5 at hpib? slave ?
disk rd6 at hpib? slave ?
tape ct0 at hpib0 slave ?
master scsi0 at scode?
master scsi1 at scode?
master scsi2 at scode?
master scsi3 at scode?
disk sd0 at scsi0 slave 2
disk sd1 at scsi? slave ?
disk sd2 at scsi? slave ?
disk sd3 at scsi? slave ?
disk sd4 at scsi? slave ?
disk sd5 at scsi? slave ?
disk sd6 at scsi? slave ?
disk sd7 at scsi? slave ?
disk sd8 at scsi? slave ?
disk sd9 at scsi? slave ?
disk sd10 at scsi? slave ?
tape st0 at scsi? slave ?
tape st1 at scsi? slave ?
device dca0 at scode9 flags 1
device le0 at scode?
device grf0 at scode?
pseudo-device pty 128 # pseudo ptys
pseudo-device bpfilter 16 # packet filter ports
pseudo-device ccd0 on rd2e and rd3e interleave 8192