Problems starting my stone.

It looks like you may have run out of shared memory on your mac ... there are two ways this can happen:

1. you've got too many stones running and consuming shared memory or you've got some "orphaned" gems or other processes attached to shared memory --- the shared memory segments are not released until all of the processes terminate
   
• take a look at the number of stones  that you are running and determine if you need them all and make sure that all of the $GEMSTONE processes are accounted for
  
2. on the mac, I recall that there used to be a bug where shared memory was not properly cleaned up and that one had to reboot to set things right ...
   
• if you have no other stones running then this might be the issue
3. you could have other programs that are not related to GemStone consuming shared memory ...
1. `ipcs -mp` (at least on Ubunutu 18.04) lists the creator PIDS, so you should be able to determine which process is responsible for creating the shared memory and deal with it appropriately

As a last resort (in case you are plagued by item 2) a reboot should get you going again ...

Dale

I am getting this again on a fresh install.  Not sure why.  On createStone
the process doesn't complete with FATAL ERRORS.

with set -x written to the stopStone script on line 11 I stop and try to
start the stone as seen here:

ian@desktop:~/Apps/Gemstone/GsDevKit_home$ startStone devKit_343
=================
   GsDevKit script: startStone devKit_343
              path: /home/ian/Apps/Gemstone/GsDevKit_home/bin/startStone
=================
/home/ian/Apps/Gemstone/GsDevKit_home/server/stones/devKit_343/product/bin/waitstone[Info]:
GemStone version '3.4.3'
waitstone[Error]: Network service
!#dir:/home/ian/Apps/Gemstone/GsDevKit_home/server/stones/devKit_343/logs#log:%N%P.log#server!devKit_343
is in startup.

Starting stone: devKit_343
HostAllocateFromReservedMemory: mmap() failed, address 0x7f776efe8000, size
65536, errno 1
  Operation not permitted

+--------------------------------------------------------------------+
|       !!! FATAL ERRORS IN GemStone CONFIGURATION FILES !!!         |
| Syntax errors, or values that are out of range are listed above,   |
| preceding the summary of non-default values.                       |
|                                                                    |
| Also check your configuration files for proper location and        |
| and values.  Consult your System Administrator's Guide             |
| for more information.                                              |
+--------------------------------------------------------------------+
startstone[Info]: GemStone version '3.4.3'
startstone[Info]: Server 'devKit_343' is already running.

...finished :: startStone devKit_343
ian@desktop:~/Apps/Gemstone/GsDevKit_home$ stopStone devKit_343
=================
   GsDevKit script: stopStone devKit_343
              path: /home/ian/Apps/Gemstone/GsDevKit_home/bin/stopStone
=================

HostAllocateFromReservedMemory: mmap() failed, address 0x7fcdb3a80000, size
65536, errno 1
  Operation not permitted

+--------------------------------------------------------------------+
|       !!! FATAL ERRORS IN GemStone CONFIGURATION FILES !!!         |
| Syntax errors, or values that are out of range are listed above,   |
| preceding the summary of non-default values.                       |
|                                                                    |
| Also check your configuration files for proper location and        |
| and values.  Consult your System Administrator's Guide             |
| for more information.                                              |
+--------------------------------------------------------------------+

...finished :: stopStone devKit_343
ian@desktop:~/Apps/Gemstone/GsDevKit_home$ 

And I am pooched.

Any help would be great...




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I saw Apps in your path and figured (wrongly) that you were running on a mac with the known problem .... I've never seen a problem with shared memory on a linux system that wasn't caused by anything but "not enough shared memory" ..

In this particular case it seems that the `AllocateMemory` error is likely that there isn't enough swap space for the stopStone gem to run .. this is the analysis of our vm engineer:

GemStone has done an mmap( MAP_NORESERVE ) of a large memory region (perhaps 100MB)
A subsequent mmap( MAP_PRIVATE | MAP_FIXED )  to bring into
use a small part (64KB) of that region has failed.

Check the memory summary as shown by /usr/bin/top
and possibly sort the output of top by memory usage (interactive top, M key )
to find unexpected old processes holding a lot of memory .

How much swap do you have configured ?   check with  /sbin/swapon - s  .
We recommend at least 1GB swap for 8GB Ram.  mmap can fail prematurely
if there is no swap configured.

If you don't have any swap partitions,
you can create a swap file on a filesystem
  fallocate --length 1GiB swapfile
  mkswap  swapfile
  swapon  swapfile
Then add an entry /etc/fstab  , sequenced after mounting the file system of swapfile
to automatically mount the swap file at next reboot.

Dale,

Yes, every time without fail.

I am using Debian on a Dell box.

Thx



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