Bug#66009: marked as done (32 Mb, but "Sorry, not enough memory" (caused by new kernels sysinfo syscall))
Your message dated 25 Jun 2000 16:36:01 -0400
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and subject line Bug#66009: 32 Mb, but "Sorry, not enough memory" (caused by new kernels sysinfo syscall)
has caused the attached Bug report to be marked as done.
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From: Debian Linux User <mrvn@rut.informatik.uni-tuebingen.de>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: 32 Mb, but "Sorry, not enough memory" (caused by new kernels sysinfo syscall)
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Date: Wed, 21 Jun 2000 11:13:17 +0200
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Package: boot-floppies
Version: N/A; reported 2000-06-21
Severity: normal
The problem is that sysinfo has changed with recent kernels:
Anything before 2.3.16
(incl 2.2 and earlier) has:
struct sysinfo {
long uptime; /* Seconds since boot */
unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
unsigned long totalram; /* Total usable main memory size */
unsigned long freeram; /* Available memory size */
unsigned long sharedram; /* Amount of shared memory */
unsigned long bufferram; /* Memory used by buffers */
unsigned long totalswap; /* Total swap space size */
unsigned long freeswap; /* swap space still available */
unsigned short procs; /* Number of current processes */
char _f[22]; /* Pads structure to 64 bytes */
};
and units of memory items were bytes. A few fields were added/removed in
2.3.16 and .17, then the big change happened in 2.3.23 and is with us
today:
struct sysinfo {
long uptime; /* Seconds since boot */
unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
unsigned long totalram; /* Total usable main memory size */
unsigned long freeram; /* Available memory size */
unsigned long sharedram; /* Amount of shared memory */
unsigned long bufferram; /* Memory used by buffers */
unsigned long totalswap; /* Total swap space size */
unsigned long freeswap; /* swap space still available */
unsigned short procs; /* Number of current processes */
unsigned long totalhigh; /* Total high memory size */
unsigned long freehigh; /* Available high memory size */
unsigned int mem_unit; /* Memory unit size in bytes */
char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
};
Now the units returned are essentially pages, and userspace needs to scale
by mem_unit to get values in bytes.
Now, with 32 MB ram, busybox will add up totalram and totalswap and divide
by 1024 to get the Kb free, which makes it 7 Kb total ram for my system.
In fact I have mem_unit times that much (mem_unit being one page=4Kb).
Some Hardware will need recent kernels, so the busybox should know about the
changes to sysinfo and act accordingly.
May the Source be with you.
Goswin
-- System Information
Debian Release: 2.2
Architecture: i386
Kernel: Linux rut 2.2.14 #8 SMP Thu May 18 16:38:50 CEST 2000 i686
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>From adam@onshore.com Sun Jun 25 15:26:17 2000
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To: Debian Linux User <mrvn@rut.informatik.uni-tuebingen.de>
Cc: 66009-done@bugs.debian.org
Subject: Re: Bug#66009: 32 Mb, but "Sorry, not enough memory" (caused by new kernels sysinfo syscall)
References: <[🔎] m134gZR-000FiYC@rut>
From: Adam Di Carlo <adam@onshore.com>
Date: 25 Jun 2000 16:36:01 -0400
In-Reply-To: Debian Linux User's message of "Wed, 21 Jun 2000 11:13:17 +0200"
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Debian Linux User <mrvn@rut.informatik.uni-tuebingen.de> writes:
> The problem is that sysinfo has changed with recent kernels:
> Anything before 2.3.16
Sure, but we just absolutely don't support non 2.2 kernels, period, in
Potato. Closing this bug.
--
.....Adam Di Carlo....adam@onShore.com.....<URL:http://www.onShore.com/>
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