Date: Wed, 04 Dec 1996 10:49:59 -0600 From: "Eric L. Hernes" <erich@lodgenet.com> To: smp@freebsd.org Subject: INVLTLB and stuff Message-ID: <199612041649.KAA18601@jake.lodgenet.com>
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Hi guys,
I decided to go for it all and test with APIC_IO and SMP_INVLTLB
first, then back off if necessary.
during a kernel compile:
(ttyp0@jake)$ vmstat -i
interrupt total rate
clk0 irq2 744193 431
rtc0 irq8 214594 124
pci irq11 17629 10
sc0 irq1 804 0
sio1 irq3 32319 18
lpt0 irq7 1 0
ed0 irq5 14927 8
sb0 irq9 321 0
stray irq13 1 0
Total 1024789 594
and the tail of dmesg:
DEVFS: ready to run
Enabled INTs: 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, imen: 0x00ffd401
SMP: AP CPU #1 LAUNCHED!! Starting Scheduling...
sio1: 1 more silo overflow (total 1)
sio1: 1 more silo overflow (total 2)
sio1: 1 more silo overflow (total 3)
sio1: 1 more silo overflow (total 4)
sio1: 25 more tty-level buffer overflows (total 25)
sio1: 92 more tty-level buffer overflows (total 117)
sio1: 25 more tty-level buffer overflows (total 142)
sio1: 12 more tty-level buffer overflows (total 154)
sio1: 11 more tty-level buffer overflows (total 165)
sio1: 10 more tty-level buffer overflows (total 175)
sio1: 1 more silo overflow (total 5)
sio1: 1 more silo overflow (total 6)
ed0: device timeout
ed0: device timeout
ed0: device timeout
ed0: device timeout
sio1 is the mouse. system responsiveness is very choppy while
anything significant is running, even a `make depend'
So I removed the SMP_INVLTLB. Is it legal to just comment
out #define SMP_INVLTLB 1 in opt_smp_invltlb.h? Or do I
need to re-config?
kernel without SMP_INVLTLB:
(ttyp1@jake)$ vmstat -i
interrupt total rate
clk0 irq2 1244898 1144
^^^^
Holy Christmas, what's up with that?
rtc0 irq8 139347 128
pci irq11 25834 23
fdc0 irq6 2962 2
sc0 irq1 3278 3
sio1 irq3 53092 48
ed0 irq5 34118 31
sb0 irq9 372 0
stray irq13 1 0
Total 1503902 1382
but no lost interrupts, and the network timeouts are gone.
kernel compile with j1:
1265.95 real 728.45 user 280.91 sys
kernel compile with j8:
658.73 real 866.27 user 256.26 sys
the machine was doing other compiles and work at the same time,
so this isn't a very great indication of performance, but it's looking
better!
eric.
--
erich@lodgenet.com
http://rrnet.com/~erich erich@rrnet.com
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