pt-summary reports wrong memory size
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Percona Toolkit moved to https://jira.percona.com/projects/PT |
Triaged
|
Medium
|
Carlos Salguero |
Bug Description
Hi,
On a server with 256G memory pt-summary reports 2.5G of memory. See results below:
# free -m
total used free shared buffers cached
Mem: 258207 256696 1510 383 463 32271
-/+ buffers/cache: 223961 34245
Swap: 16383 39 16344
# free -mh
total used free shared buffers cached
Mem: 252G 251G 1.0G 505M 463M 31G
-/+ buffers/cache: 218G 33G
Swap: 15G 39M 15G
# cat /proc/meminfo
MemTotal: 264404376 kB
MemFree: 1231712 kB
Buffers: 474832 kB
Cached: 33537260 kB
SwapCached: 2824 kB
Active: 225141140 kB
Inactive: 34971456 kB
Pt-summary:
# Memory #######
Total | 2.5G
Free | 1.7G
Used | physical = 2.5G, swap allocated = 1.6G, swap used = 39.9M, virtual = 2.5G
Shared | 244.0k
Buffers | 436.0M
Caches | 3.1G
Checking the code :
https:/
We can see pt-summary use `free -b`:
free -b
total used free shared buffers cached
Mem: 2707500810 2700511313 698949632 233472 486223872 3480769740
-/+ buffers/cache: 2347572101 3599287091
Swap: 1717986508 41594880 1713827020
And here we are:
2707500810 bytes is 2.5G.
Not sure this is a bug in the tool or not, but we might can check `meminfo`
results also and if they are not the same, show a warning or something.
Thanks,
Tibi
Changed in percona-toolkit: | |
assignee: | nobody → Carlos Salguero (carlos-salguero) |
importance: | Undecided → Medium |
status: | New → Triaged |
milestone: | none → 2.2.21 |
Percona now uses JIRA for bug reports so this bug report is migrated to: https:/ /jira.percona. com/browse/ PT-716