On Fri, Apr 29, 2016 at 11:00:32PM +0200, Karel Gardas wrote:
> On Fri, Apr 29, 2016 at 10:51 PM, Markus Lude <markus.l...@gmx.de> wrote:
> > Hello,
> >
> > with latest snapshot I've short hangs on my (good old) SUN Blade 100.
> > The desktop clocks often shows jumps for several seconds.
> > I noticed that the machine is running low on free memory and uses a lot
> > for cache.
> > kern.bufcachepercent is 90
> >
> > After setting this to 20 the machine feels a lot more responsive.
> >
> > Just want to let the devs working on the buffer cache know about this.

> You should include dmesg or even report as proper bugreport.
 
kern.bufcachepercent is set to 20 in the current CVS tree.

The snapshot from april 25th set it to 90. This almost killed the rest
of the little "performance" my old machine has.
Setting kern.bufcachepercent back to 20 helped here.

I don't see this as a bug. I'm happy with adding a line to sysctl.conf.

I just wanted to provide some small feedback to the devs which put the
changed setting in snapshots.

Of course I should include dmesg, see below.

Regards,
Markus


console is keyboard/display
Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-2016 OpenBSD. All rights reserved.  http://www.OpenBSD.org

OpenBSD 5.9-current (GENERIC) #963: Sun Apr 24 20:32:34 MDT 2016
    dera...@sparc64.openbsd.org:/usr/src/sys/arch/sparc64/compile/GENERIC
real mem = 536870912 (512MB)
avail mem = 511467520 (487MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root: Sun Blade 100 (UltraSPARC-IIe)
cpu0 at mainbus0: SUNW,UltraSPARC-IIe (rev 1.4) @ 502 MHz
cpu0: physical 16K instruction (32 b/l), 16K data (32 b/l), 256K external (64 
b/l)
psycho0 at mainbus0: pci108e,a001, impl 0, version 0, ign 7c0
psycho0: bus range 0-1, PCI bus 0
psycho0: dvma map c0000000-dfffffff
pci0 at psycho0
ebus0 at pci0 dev 12 function 0 "Sun RIO EBus" rev 0x01
"flashprom" at ebus0 addr 0-fffff not configured
clock1 at ebus0 addr 0-1fff: mk48t59
ebus1 at pci0 dev 7 function 0 "Acer Labs M1533 ISA" rev 0x00
"dma" at ebus1 addr 0-ffff ivec 0x2a not configured
power0 at ebus1 addr 800-82f ivec 0x20
com0 at ebus1 addr 3f8-3ff ivec 0x2b: ns16550a, 16 byte fifo
com1 at ebus1 addr 2e8-2ef ivec 0x2b: ns16550a, 16 byte fifo
gem0 at pci0 dev 12 function 1 "Sun ERI Ether" rev 0x01: ivec 0x7c6, address 
00:03:ba:18:3a:e9
ukphy0 at gem0 phy 1: Generic IEEE 802.3u media interface, rev. 1: OUI 
0x0010dd, model 0x0002
"Sun FireWire" rev 0x01 at pci0 dev 12 function 2 not configured
ohci0 at pci0 dev 12 function 3 "Sun USB" rev 0x01: ivec 0x7e4, version 1.0, 
legacy support
alipm0 at pci0 dev 3 function 0 "Acer Labs M7101 Power" rev 0x00: 223KHz clock
iic0 at alipm0
"max1617" at alipm0 addr 0x18 skipped due to alipm0 bugs
"scm001" at alipm0 addr 0x20 skipped due to alipm0 bugs
spdmem0 at iic0 addr 0x50: 512MB SDRAM ECC PC133CL2
autri0 at pci0 dev 8 function 0 "Acer Labs M5451 Audio" rev 0x01: ivec 0x7e3
ac97: codec id 0x41445348 (Analog Devices AD1881A)
ac97: codec features headphone, Analog Devices Phat Stereo
audio0 at autri0
midi0 at autri0: <4DWAVE MIDI UART>
pciide0 at pci0 dev 13 function 0 "Acer Labs M5229 UDMA IDE" rev 0xc3: DMA, 
channel 0 configured to native-PCI, channel 1 configured to native-PCI
pciide0: using ivec 0x7cc for native-PCI interrupt
wd0 at pciide0 channel 0 drive 0: <ST3120213A>
wd0: 16-sector PIO, LBA48, 114473MB, 234441648 sectors
atapiscsi0 at pciide0 channel 0 drive 1
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <LITEON, CD-ROM LTN486S, Y3S2> ATAPI 5/cdrom 
removable
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
cd0(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2
wd1 at pciide0 channel 1 drive 0: <WDC WD1600AAJB-00J3A0>
wd1: 16-sector PIO, LBA48, 152627MB, 312581808 sectors
wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
ppb0 at pci0 dev 5 function 0 "Intel S21152BB" rev 0x00
pci1 at ppb0 bus 1
rl0 at pci1 dev 2 function 0 "D-Link DFE-530TX+" rev 0x10: ivec 0x7d5, address 
00:11:95:21:ec:70
rlphy0 at rl0 phy 0: RTL internal PHY
machfb0 at pci0 dev 19 function 0 "ATI Rage XL" rev 0x27
machfb0: ATY,RageXL, 800x600
wsdisplay0 at machfb0 mux 1: console (std, sun emulation)
usb0 at ohci0: USB revision 1.0
uhub0 at usb0 "Sun OHCI root hub" rev 1.00/1.00 addr 1
uhidev0 at uhub0 port 1 configuration 1 interface 0 "Fujitsu Component Type 6 
Keyboard" rev 1.00/1.02 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes, country code 33
wskbd0 at ukbd0: console keyboard, using wsdisplay0
uhidev1 at uhub0 port 2 configuration 1 interface 0 "Logitech USB-PS/2 Optical 
Mouse" rev 2.00/20.00 addr 3
uhidev1: iclass 3/1
ums0 at uhidev1: 3 buttons, Z dir
wsmouse0 at ums0 mux 0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
bootpath: /pci@1f,0/ide@d,0/disk@0,0
root on wd0a (a3fcc6617d442473.a) swap on wd0b dump on wd0b

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