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Description of problem:
The 'free -b' command is supposed to show the amount of memory in bytes. It looks like the number is getting truncated (maybe due to formatting?) when the amount of memory is 10GB or more. 'free -t -b' also shows a truncated number for total memory. I'm assuming that the same would be true for swap if swap is 10GB or more. Compare the outputs below from my RHEL 6.7 server with 64GB physical memory and 4GB swap:
# free -t -g
total used free shared buffers cached
Mem: 62 51 11 0 0 0
-/+ buffers/cache: 50 12
Swap: 3 0 3
Total: 66 51 15
# free -t -m
total used free shared buffers cached
Mem: 64425 52322 12102 0 28 205
-/+ buffers/cache: 52088 12336
Swap: 3967 0 3967
Total: 68393 52322 16070
# free -t -k
total used free shared buffers cached
Mem: 65972116 53578248 12393868 244 28920 210720
-/+ buffers/cache: 53338608 12633508
Swap: 4063228 0 4063228
Total: 70035344 53578248 16457096
# free -t -b
total used free shared buffers cached
Mem: 6755544678 5486408089 1269136588 249856 29614080 215777280
-/+ buffers/cache: 5461868953 1293675724
Swap: 4160745472 0 4160745472
Total: 7171619225 5486408089 1685211136
To verify what the number in bytes should be:
# echo "`free -t -k |awk '{if ($1 == "Mem:") print $2}'` * 1024" | bc -l
67555446784
Version-Release number of selected component (if applicable):
# uname -r
2.6.32-573.1.1.el6.x86_64
# rpm -q procps
procps-3.2.8-33.el6.x86_64
How reproducible:
100%
Steps to Reproduce:
1. On a system with at least 10GB physical memory, run 'free -t -b'
2.
3.
Actual results:
(On a system with 64GB physical memory and 4GB swap)
# free -t -b
total used free shared buffers cached
Mem: 6755544678 5486408089 1269136588 249856 29614080 215777280
-/+ buffers/cache: 5461868953 1293675724
Swap: 4160745472 0 4160745472
Total: 7171619225 5486408089 1685211136
Expected results:
# free -t -b
total used free shared buffers cached
Mem: 67555446784 5486408089 1269136588 249856 29614080 215777280
-/+ buffers/cache: 5461868953 1293675724
Swap: 4160745472 0 4160745472
Total: 71716192256 5486408089 1685211136
Additional info:
Hello Raymond.
This issue has been reported in scope of Bug 1246379 and I'm closing this as duplicate.
Thanks for the report and for your understanding.
Regards,
Jaromir.
*** This bug has been marked as a duplicate of bug 1246379 ***
Description of problem: The 'free -b' command is supposed to show the amount of memory in bytes. It looks like the number is getting truncated (maybe due to formatting?) when the amount of memory is 10GB or more. 'free -t -b' also shows a truncated number for total memory. I'm assuming that the same would be true for swap if swap is 10GB or more. Compare the outputs below from my RHEL 6.7 server with 64GB physical memory and 4GB swap: # free -t -g total used free shared buffers cached Mem: 62 51 11 0 0 0 -/+ buffers/cache: 50 12 Swap: 3 0 3 Total: 66 51 15 # free -t -m total used free shared buffers cached Mem: 64425 52322 12102 0 28 205 -/+ buffers/cache: 52088 12336 Swap: 3967 0 3967 Total: 68393 52322 16070 # free -t -k total used free shared buffers cached Mem: 65972116 53578248 12393868 244 28920 210720 -/+ buffers/cache: 53338608 12633508 Swap: 4063228 0 4063228 Total: 70035344 53578248 16457096 # free -t -b total used free shared buffers cached Mem: 6755544678 5486408089 1269136588 249856 29614080 215777280 -/+ buffers/cache: 5461868953 1293675724 Swap: 4160745472 0 4160745472 Total: 7171619225 5486408089 1685211136 To verify what the number in bytes should be: # echo "`free -t -k |awk '{if ($1 == "Mem:") print $2}'` * 1024" | bc -l 67555446784 Version-Release number of selected component (if applicable): # uname -r 2.6.32-573.1.1.el6.x86_64 # rpm -q procps procps-3.2.8-33.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1. On a system with at least 10GB physical memory, run 'free -t -b' 2. 3. Actual results: (On a system with 64GB physical memory and 4GB swap) # free -t -b total used free shared buffers cached Mem: 6755544678 5486408089 1269136588 249856 29614080 215777280 -/+ buffers/cache: 5461868953 1293675724 Swap: 4160745472 0 4160745472 Total: 7171619225 5486408089 1685211136 Expected results: # free -t -b total used free shared buffers cached Mem: 67555446784 5486408089 1269136588 249856 29614080 215777280 -/+ buffers/cache: 5461868953 1293675724 Swap: 4160745472 0 4160745472 Total: 71716192256 5486408089 1685211136 Additional info: