Memory filled by large buffer Linksys WRT3200ACM

I am quite a novice with OpenWrt. I installed it a few months ago and re-installed OpenWrt yesterday and applied a few packages SQM, adblock and some network monitoring tools. Please may I have some advice? I notice that the memory has bee filled a lot by buffers. Is there a way to clear the buffers out? What is it that is likely to be creating 243Mb of buffers?

cat /proc/meminfo

MemTotal: 511964 kB
MemFree: 55228 kB
MemAvailable: 267724 kB
Buffers: 243460 kB
Cached: 14604 kB
SwapCached: 0 kB
Active: 26500 kB
Inactive: 242168 kB
Active(anon): 12664 kB
Inactive(anon): 120 kB
Active(file): 13836 kB
Inactive(file): 242048 kB
Unevictable: 0 kB
Mlocked: 0 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 511964 kB
LowFree: 55228 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 10604 kB
Mapped: 11744 kB
Shmem: 2180 kB
Slab: 150140 kB
SReclaimable: 3844 kB
SUnreclaim: 146296 kB
KernelStack: 816 kB
PageTables: 484 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 255980 kB
Committed_AS: 21292 kB
VmallocTotal: 507904 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB


As far as I know, adBlock as to keep a rather large list of blocked sites in memory. Try to disable it, or reduce the number of lists used, and see what happens.

1 Like

Thanks for getting back to me. All my connections are over VPN so adblock doesn't block anything! I should have realised this. How do I uninstall it?


opkg remove ...

Why do you worry about buffers? That memory can be reclaimed when needed. Can you share the output of free?

And a screenshot of the top portion of top.