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cachepct limit !
Hi,
I try to raise the cachepct with config so postgresql will be happy.
But I got a limit of 26% of my 1Gb of RAM.
The figures:
cachepct = 5
using 4278 buffers containing 53768192 bytes (52508K) of memory
cachepct = 10
using 4278 buffers containing 107540480 bytes (105020K) of memory
cachepct = 20
using 4278 buffers containing 215085056 bytes (210044K) of memory
cachepct = 26
using 4278 buffers containing 279609344 bytes (273056K) of memory
cachepct = 50
using 4278 buffers containing 280363008 bytes (273792K) of memory
cachepct = 60
using 4278 buffers containing 280363008 bytes (273792K) of memory
cachepct = 75
using 4278 buffers containing 280363008 bytes (273792K) of memory
The memory allocated by the kernel at boot time:
- grows lineraly with cachepct under 26%
- stay at 280363008 over 26%
I use a OpenBSD 3.3 box with wdt driver activated (GEN6):
dmesg:
OpenBSD 3.3 (GEN6) #1: Fri Feb 6 10:26:04 CET 2004
xxxxx@xxxxxxxx:/usr/src/sys/arch/i386/compile/GEN6
cpu0: Intel Pentium 4 ("GenuineIntel" 686-class) 2.40 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SYS,MTRR,PGE,MCA,CMOV,PAT,PSE36,
MM
X,FXSR,SIMD,3DNOW
real mem = 1073328128 (1048172K)
avail mem = 775348224 (757176K)
using 4278 buffers containing 268853248 bytes (262552K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 01/10/03, BIOS32 rev. 0 @
0xfdb80
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev. 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev. 1.0 @ 0xf4fb0/272 (15 entries)
pcibios0: no compatible PCI ICU found: ICU vendor 0xffff product 0xffff
pcibios0: PCI bus #0 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000 0xc9800/0x1800
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "ServerWorks CMIC_SL Host" rev 0x32
pchb1 at pci0 dev 0 function 1 "ServerWorks CMIC_SL Host" rev 0x00
pci1 at pchb1 bus 1
wdt0 at pci0 dev 5 function 0 "Industrial Computer Source WDT 50x
Watchdog Timer
" rev 0x02
wdt0: WDT501 timeout 30 secs, temp 24 F
vga1 at pci0 dev 7 function 0 "ATI Rage XL" rev 0x27
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
fxp0 at pci0 dev 8 function 0 "Intel 82557" rev 0x10: irq 9, address
00:e0:81:24
:f0:96
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
pcib0 at pci0 dev 15 function 0 "ServerWorks CSB5 SouthBridge" rev 0x93
pciide0 at pci0 dev 15 function 1 "ServerWorks CSB5 IDE" rev 0x93: DMA
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <MITSUMI, CD-ROM SR244W, T01A> SCSI0
5/cdrom remov
able
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2
ohci0 at pci0 dev 15 function 2 "ServerWorks OSB4/CSB5 USB" rev 0x05:
irq 10, OH
CI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: vendor 0x0000 OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 4 ports with 4 removable, self powered
pchb2 at pci0 dev 15 function 3 "ServerWorks CSB5 PCI Bridge" rev 0x00
pchb3 at pci0 dev 16 function 0 "ServerWorks CIOBX2" rev 0x03
pchb4 at pci0 dev 16 function 2 "ServerWorks CIOBX2" rev 0x03
pci2 at pchb4 bus 2
twe0 at pci2 dev 3 function 0 "3ware Escalade IDE RAID" rev 0x01: irq 10
twe0: Escalade V1.3
scsibus1 at twe0: 16 targets
sd0 at scsibus1 targ 0 lun 0: <3WARE, Host drive #00, > SCSI2 0/direct
fixed
sd0: 239371MB, 30515 cyl, 255 head, 63 sec, 512 bytes/sec, 490232704
sec total
sd1 at scsibus1 targ 2 lun 0: <3WARE, Host drive #02, > SCSI2 0/direct
fixed
sd1: 478742MB, 61031 cyl, 255 head, 63 sec, 512 bytes/sec, 980465408
sec total
sd2 at scsibus1 targ 7 lun 0: <3WARE, Host drive #07, > SCSI2 0/direct
fixed
sd2: 239372MB, 30515 cyl, 255 head, 63 sec, 512 bytes/sec, 490234752
sec total
em0 at pci2 dev 7 function 0 "Intel PRO/1000MT (PWLA8490MT)" rev 0x01:
irq 11, a
ddress: 00:e0:81:24:f0:97
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: using exception 16
ddress: 00:e0:81:24:f0:97
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask c440 netmask ce40 ttymask cec2
pctr: user-level cycle counter enabled
dkcsum: sd0 matched BIOS disk 80
dkcsum: sd1 matched BIOS disk 81
dkcsum: sd2 matched BIOS disk 82
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
Jean-Gérard Pailloncy