I am running HP-UX B.11.11.
I'm increasing a parameter for a database engine so that it uses more memory to buffer the disk drive (to speed up performance). I have over 5GB of memory not being used.
But when I try to start the DB with the increased buffer parameter I get told.
"Not... (1 Reply)
hi,
this is the problem: i want to swap a linked list between 4 processes (unrelated), is there any way i can do that just by sending a pointer to a structure?
//example
typedef struct node
{
int x;
char c;
struct node *next;
} node;
or i should send the items ( x,c ) by... (9 Replies)
I need to create a shared library to access an in memory DB. The DB is not huge, but big enough to make it cumbersome to carry around in every single process using the shared library. Luckily, it is pretty static information, so I don't need to worry much about synchronizing the data between... (12 Replies)
I am writing a shared library in Linux (but compatible with other UNIXes) and I want to allow multiple instances to share a piece of memory -- 1 byte is enough. What's the "best" way to do this? I want to optimize for speed and portability.
Obviously, I'll have to worry about mutual exclusion. (0 Replies)
hi,
For some special reason , I'd like to control the memory address for the shared libraries in my dynamically linked process.
And it is the "ld" which interpret the dynamically linked library, and in my system, the "ld-linux.so.2" is put at 0x00812000. Then I use "prelink -r" command to change... (0 Replies)
hi,
For some special reason , I'd like to control the memory address for the shared libraries in my dynamically linked process.
And it is the "ld" which interpret the dynamically linked library, and in my system, the "ld-linux.so.2" is put at 0x00812000. Then I use "prelink -r" command to... (3 Replies)
Hi all,
I have been working on shared memory. I have created the shared memory and a linked list of 5 nodes. Now I want to attach the linked list to shared memory. When we attach a shared memory it returns a void pointer, but here I am in a fix , how to relate this void pointer to linked list.... (1 Reply)
Hi all,
I have been working on shared memory. I have created the shared memory and a linked list of 5 nodes. Now I want to attach the linked list to shared memory. When we attach a shared memory it returns a void pointer, but here I am in a fix , how to relate this void pointer to linked list.... (4 Replies)
Hello.
I am new to this forum and I would like to ask for advice about low level POSIX programming.
I have to implement a POSIX compliant C shared library.
A file will have some variables and the shared library will have some functions which need those variables.
There is one special... (5 Replies)
I want to create a shared lib with certain libs statically linked to it. I can generate a fully shared lib as follows:
gcc -maix64 -DHAVE_CONFIG_H -I. -I./src -DHAVE_OPENSSL -I/usr/include/openssl -I/usr/include -I/usr/include/apr-1 -D_LARGEFILE64_SOURCE -I/usr/java8_64/include -shared -o... (0 Replies)
Discussion started by: amandeepgautam
0 Replies
LEARN ABOUT DEBIAN
file2sm
FILE2SM(1) ICI executables FILE2SM(1)NAME
file2sm - shared-memory linked list data ingestion test program
SYNOPSIS
file2sm fileName
DESCRIPTION
file2sm stress-tests shared-memory linked list data ingestion by repeatedly writing all text lines of the file named fileName to a shared-
memory linked list that is the root object of a PSM partition named "file2sm".
After writing each line to the linked list, file2sm gives a semaphore to indicate that the list is now non-empty. This is mainly for the
benefit of the complementary test program sm2file(1).
The operation of file2sm is cyclical. After copying all text lines of the source file to the linked list, file2sm appends an EOF line to
the linked list, containing the text "*** End of the file ***", and prints a brief performance report:
Processing I<lineCount> lines per second.
Then it reopens the source file and starts appending the file's text lines to the linked list again.
EXIT STATUS
0 file2sm has terminated.
FILES
No configuration files are needed.
ENVIRONMENT
No environment variables apply.
DIAGNOSTICS
Can't attach to shared memory
Operating system error. Check errtext, correct problem, and rerun.
Can't manage shared memory.
PSM error. Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.
Can't create shared memory list.
smlist error. Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.
Can't create semaphore.
ION system error. Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.
Can't open input file
Operating system error. Check errtext, correct problem, and rerun.
Can't reopen input file
Operating system error. Check errtext, correct problem, and rerun.
Can't read from input file
Operating system error. Check errtext, correct problem, and rerun.
Ran out of memory.
Nominal behavior. sm2file is not extracting data from the linked list quickly enough to prevent it from growing to consume all memory
allocated to the test partition.
BUGS
Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>
SEE ALSO sm2file(1), smlist(3), psm(3)perl v5.14.2 2012-05-25 FILE2SM(1)
06-25-2010
