Arch Linux

another-arch

Member

Registered: 2018-11-13

Posts: 1

kernel dynamic memory is huge after boot

Lately, I am not sure since when, my kernel dynamic memory is really huge after boot. It could be since I installed QEMU, but I am not sure if that is the reason.
I don't start QEMU on boot so it shouldn't affect it anyway.

I have this issue on a Dell XPS 15 9550 with the latest System Firmware 0.1.9.0
A downgrade to version  0.1.8.0 didn't help neither.

The kernels I had an issues with are the kernel 4.19.1-arch1-1-ARCH (latest) and with the kernel 4.18.16.
Also when I start the linux-lts kernel it is the same situation.

$ smem -twk

Area                           Used      Cache   Noncache 
firmware/hardware                 0          0          0 
kernel image                      0          0          0 
kernel dynamic memory         13.2G       1.0G      12.2G 
userspace memory             912.2M     268.9M     643.3M 
free memory                    1.4G       1.4G          0 
----------------------------------------------------------
                              15.5G       2.7G      12.8G 

cat /proc/meminfo

MemTotal:       16280648 kB
MemFree:          458340 kB
MemAvailable:    1199008 kB
Buffers:          172612 kB
Cached:          1382992 kB
SwapCached:            0 kB
Active:          1769972 kB
Inactive:        1132240 kB
Active(anon):    1347332 kB
Inactive(anon):   602096 kB
Active(file):     422640 kB
Inactive(file):   530144 kB
Unevictable:          16 kB
Mlocked:              16 kB
SwapTotal:      25599996 kB
SwapFree:       25599996 kB
Dirty:              2048 kB
Writeback:             0 kB
AnonPages:       1346696 kB
Mapped:           505548 kB
Shmem:            602828 kB
Slab:             166016 kB
SReclaimable:      96724 kB
SUnreclaim:        69292 kB
KernelStack:        9136 kB
PageTables:        15256 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    27448864 kB
Committed_AS:    4289220 kB
VmallocTotal:   34359738367 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
Percpu:             2496 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
HugePages_Total:    6144
HugePages_Free:     6144
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:        12582912 kB
DirectMap4k:      145304 kB
DirectMap2M:     6004736 kB
DirectMap1G:    10485760 kB

The OS is getting really slow when the swap space starts to fill up.

Last edited by another-arch (2018-11-14 07:32:31)