[9fans] out of physical memory; no swap configured
Hi, I used Erik's 9atoms.iso to install Plan 9. When its booting, after its asking for root partition and username, I get the error message repeated: out of physical memory; no swap configured. Why, oh why? I use fossil without venti, on a 2GB partition, the RAM is also 2 GB. I found the message in http://plan9.bell-labs.com/sources/plan9/sys/src/9/port/swap.c - static void pager(void *junk). Greetings: Béla
Re: [9fans] out of physical memory; no swap configured
On Sat Feb 27 06:49:47 EST 2010, bval...@gmail.com wrote: Hi, I used Erik's 9atoms.iso to install Plan 9. When its booting, after its asking for root partition and username, I get the error message repeated: out of physical memory; no swap configured. Why, oh why? memory scan went sideways due to broken bios? the memory messages printed during startup should be helpful. - erik
[9fans] seq with hex, octal formats
i've attached a little program that extends
seq to print sequences in hex or octal. for example,
; seq.rc -f %.4x 0x3b1 0x3b2
03b1
03b2
i did it in rc (really awk) because it was too tedious
to get the details right in c.
as such, formats are as in printf(2) not as in print(2).
this is a bug, but i don't see a reasonable workaround.
even using awk and adding functionality, the new
program is *way* faster than seq:
; /dev/null time seq 1 10
1.90u 0.09s 1.99rseq 1 10
; /dev/null time seq.rc 1 10
0.28u 0.00s 0.29rseq.rc 1 10
- erik#!/bin/rc
awk '
function hex(s,base, r, n, i, k, c)
{
base = 16;
if(s ~ /^0[xX][0-9a-fA-F]+/)
s = substr(str, 3);
n = length(s)
r = 0
for (i = 1; i = n; i++) {
c = tolower(substr(s, i, 1))
k = index(0123456789abcdef, c) - 1;
r = r * base + k
}
return r
}
function mystrtonum(str0,neg, base, str, r, n, i, k, c)
{
base = 0;
neg = 0;
str = str0;
if(str ~ /^\+/)
str = substr(str, 2)
if(str ~ /^-/){
str = substr(str, 2)
neg = 1
}
if(str ~ /^0[0-7]*$/)
base = 8
if(str ~ /^0[xX][0-9a-fA-F]+/){
str = substr(str, 3);
base = 16;
}
if(base != 0){
n = length(str)
r = 0
for (i = 1; i = n; i++) {
c = tolower(substr(str, i, 1))
k = index(0123456789abcdef, c) - 1;
r = r * base + k
}
}else if(str ~ /^[0-9]*([.][0-9]*)?([Ee][-+]?[0-9]+)?$/)
r = str0 + 0
else
r = NaN
return r
}
function usage()
{
print usage: seq [-w] [-f fmt] min [inc] max /fd/2
exit(1);
}
function EARGF()
{
if(j + 1 length(a))
return substr(a, j+1, 100);
i++;
if(i = ARGC)
usage();
return ARGV[i];
}
function args()
{
for(i = 1; i ARGC; i++){
a = ARGV[i]
if(a !~ /^-..*/)
break;
for(j = 2; j = length(a); j++){
c = substr(a, j, 1);
if(c == w)
flagw = 1
else if(c == f){
format = EARGF()
if(format !~ /\n$/)
format = format \n
}else
usage()
}
}
n = ARGC - i
if(n != 2 n != 3)
usage()
min = mystrtonum(ARGV[i++])
incr = 1
if(n == 3)
incr = mystrtonum(ARGV[i++])
max = mystrtonum(ARGV[i++])
}
function buildfmt()
{
if(length(format) 0)
return;
format = %g\n;
if(!flagw)
return;
maxw = 0;
maxp = 0;
for(val = min; val = max; val += incr){
buf = sprintf(%g, val)
if(buf ~ /e/)
return
parts = split(buf, ary, \.);
w = length(ary[1]);
p = length(ary[2]) + parts==2;
if(wmaxw)
maxw = w;
if(pmaxp)
maxp = p;
}
if(maxp 0)
maxw += maxp+1;
format = sprintf(%%0%d.%df\n, maxw, maxp);
}
BEGIN{
args();
buildfmt()
for(val = min;; val += incr){
if(incr 0 val max)
break;
if(incr 0 val max)
break;
printf(format, val)
}
exit(0);
}' $*
Re: [9fans] seq with hex, octal formats
diff -r 3024d1ef1140 src/cmd/seq.c
--- a/src/cmd/seq.c Wed Sep 30 11:01:45 2009 -0700
+++ b/src/cmd/seq.c Sat Feb 27 16:11:56 2010 -0800
@@ -47,6 +47,39 @@
format = fmt;
}
+extern int __ifmt(Fmt*); // _ifmt on Plan 9
+
+static int
+doifmt(Fmt *f, ...)
+{
+ int rv;
+ va_list argsav;
+
+ f-flags |= FmtVLong;
+ va_copy(argsav, f-args);
+ va_end(f-args);
+ va_start(f-args, f);
+ rv = __ifmt(f);
+ va_end(f-args);
+ va_copy(f-args, argsav);
+ va_end(argsav);
+ return rv;
+}
+
+static int
+ifmt(Fmt *f)
+{
+ int rv;
+ static int running;
+
+ if(running)
+ return __ifmt(f);
+ running = 1;
+ rv = doifmt(f, (vlong)va_arg(f-args, double));
+ running = 0;
+ return rv;
+}
+
void
main(int argc, char *argv[]){
int j, n;
@@ -79,7 +112,11 @@
fprint(2, seq: zero increment\n);
exits(zero increment);
}
- if(!format)
+ if(format){
+ fmtinstall('d', ifmt);
+ fmtinstall('o', ifmt);
+ fmtinstall('x', ifmt);
+ }else
buildfmt();
if(incr 0){
for(val = min; val = max; val += incr){
Re: [9fans] seq with hex, octal formats
very nice! one problem, ifmt can crash with the argument -f %g. fomatting %g will mean that !running to be true when calling ifmt, thus ifmt will try to va_arg a double cast to vlong when formatting an integer: /sys/src/libc/fmt/fltfmt.c:136: sprint(s1+NSIGNIF, e%d, e-NSIGNIF+1); /sys/src/libc/fmt/fltfmt.c:142: sprint(s1+NSIGNIF, e%d, e-NSIGNIF+1); /sys/src/libc/fmt/fltfmt.c:155: sprint(s1+NSIGNIF, e%d, e-NSIGNIF+1); (actually, on testing, this version spins rather than crashes on plan 9: ; ps -a | grep 1308769 quanstro13087691:30 0:00 28K Running 8.seqrsc -f %g 1 5 ) using awk is still faster, and more fundamentally, avoids crashing on bogus formats like %g%g. (also, -w doesn't work with either version with a %x format because 'e' is a valid hex digit and not an exponent.) - erik
Re: [9fans] seq with hex, octal formats
using awk is still faster For the curious and lazy ... why is that?
Re: [9fans] seq with hex, octal formats
On Sat Feb 27 21:08:17 EST 2010, lyn...@orthanc.ca wrote: using awk is still faster For the curious and lazy ... why is that? it is curious! it appears that the ape strtod is much faster, though it isn't quite correct: both of these are in /sys/src/libc/port/strtod.c % Time Calls Name 43.83.492 4385186 fpcmp 35.02.788 62445696 frnorm - erik
[9fans] Magic Mouse in 9vx?
The multi-touch stuff added to plan9ports to make the Apple Magic Mouse work is really nice; I confess I didn't really believe Russ when he described it as feeling natural, but it does. It's pretty easy to forget about the mechanics of what's going on under your hand. These days, though, I spend most of my interactive time in 9vx. Is anyone working on getting the multi-touch stuff working in 9vx? Anthony Sorace Strand 1 PGP.sig Description: This is a digitally signed message part
Re: [9fans] sheevaplug port available
I tried compiling 9plug kernel and got an error: mk: no recipe to make 'sdscsi.5' in directory /sys/src/9/kw Do I need to copy /sys/src/9/pc/sdscsi.c , or edit plug conf file?
Re: [9fans] sheevaplug port available
Sorry, I'd forgotten to push /sys/src/9/kw/sdscsi.c to sources. It's fixed now.
