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Program received signal SIGSEGV, Segmentation fault.
0x4002dfbc in mb_pixbuf_img_plot_pixel (pb=<value optimized out>, img=0x1ba40, x=22,
y=-434, r=255 'ÿ', g=0 '\0', b=0 '\0') at mbpixbuf.c:2087
(gdb) bt
#0 0x4002dfbc in mb_pixbuf_img_plot_pixel (pb=<value optimized out>, img=0x1ba40, x=22,
y=-434, r=255 'ÿ', g=0 '\0', b=0 '\0') at mbpixbuf.c:2087
#1 0x0000966c in paint_callback (app=<value optimized out>, drw=46137348)
at mb-applet-system-monitor.c:272
#2 0x4002b8f6 in handle_expose (mb=0x1ba40, event=<value optimized out>) at mbtray.c:820
#3 0x4002b922 in mb_tray_app_repaint (mb=0x1ba40) at mbtray.c:833
#4 0x00008fd4 in timeout_callback (app=0x1ba40) at mb-applet-system-monitor.c:347
#5 0x4002c580 in mb_tray_app_main (mb=0x14008) at mbtray.c:302
#6 0x00009878 in main (argc=1, argv=0xbecf1ca4) at mb-applet-system-monitor.c:410
(gdb) up
(gdb) print membox_h
$1 = 20
(gdb) print mem_pixels
$2 = 18798069
(gdb) print memsize
$3 = 1597228901
(gdb) print msd
$4 = {loadIndex = 15, samples = 16, load = 0x18a90, total = 0x18b18,
mem_used = 18446744073706139648, mem_max = 63750144, swap_used = 0, swap_max = 0,
swap_percent = 0, mem_percent = 1597228901}
Huh, mem_used doesn't look good!
root@zaurus:~# printf %lx\\n -18446744073706139648
341000
Well, it's negative. The algorithm is a bit stange.
root@zaurus:~# cat /proc/meminfo
MemTotal: 62256 kB
MemFree: 8504 kB
Buffers: 1508 kB
Cached: 24692 kB
SwapCached: 8604 kB
Active: 22632 kB
Inactive: 21344 kB
SwapTotal: 131064 kB
SwapFree: 72060 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 12636 kB
Mapped: 5532 kB
Slab: 4300 kB
SReclaimable: 1456 kB
SUnreclaim: 2844 kB
PageTables: 1116 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 162192 kB
Committed_AS: 81568 kB
VmallocTotal: 581632 kB
VmallocUsed: 9112 kB
VmallocChunk: 565244 kB
Now let's compute what's happening:
cache_used = cache_total - cache_free;
my_mem_used = cache_used + used - cached - buffers;
12636 - 5532 + 8604 - 24692 - 1508 = -10492
======
Well, I don't know, how to compute a really used memory, but I could at
least sanitize the value. Here you are:
Index: matchbox-panel-0.9.3/applets/mb-applet-system-monitor.c
===================================================================
--- matchbox-panel-0.9.3/applets/mb-applet-system-monitor.c 2006-02-07 22:19:12.000000000 +0000
+++ matchbox-panel-0.9.3/applets/mb-applet-system-monitor.c 2009-02-21 13:19:41.000000000 +0000
@@ -195,6 +195,11 @@
my_mem_max = total;
my_swap_max = cache_total;
my_mem_used = cache_used + used - cached - buffers;
+ /* Ugly hack! Fix mem-used algorithm is needed. */
+ if (my_mem_used < 0)
+ my_mem_used = 0;
+ if (my_mem_used > my_mem_max)
+ my_mem_used = my_mem_max;
msd.mem_used = my_mem_used;
msd.mem_max = my_mem_max;
msd.mem_percent = (100 * msd.mem_used) / msd.mem_max;
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