bind memory usage
peter at peter-dambier.de
Sat Dec 13 23:59:51 UTC 2008
I can confirm bind 9.4 does run on an (IBM, not Intel) 486-SCL/2 with 16 MB.
That cpu can address no more than 16 MB.
$ cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 14540800 10596352 3944448 3194880 1003520 3518464
Swap: 133885952 11907072 121978880
MemTotal: 14200 kB
MemFree: 3852 kB
MemShared: 3120 kB
Buffers: 980 kB
Cached: 3436 kB
SwapTotal: 130748 kB
SwapFree: 119120 kB
So it is consuming 11 MB swap right now.
Bind performs reasonably. It is my local resolver and it is
running an alternative root-zone plus a couple of other zones.
vanadium up 5+14:18, 1 user, load 0.00, 0.00, 0.00
It is running for 5 and a half days now.
Freshly started the swapsize is zero but after a day or two
swap is waxing, never waning.
JINMEI Tatuya / 神明達哉 wrote:
> At Sat, 13 Dec 2008 11:50:52 -0200,
> Leonardo Rodrigues Magalhães <leolistas at solutti.com.br> wrote:
>> i'm trying to run bind 9.5.0-P2 on a very low memory system. It's a
>> RouterBoard 450 with 32Mb RAM running OpenWRT.
>> root at sede:~# cat /proc/meminfo
>> MemTotal: 29920 kB
>> the problem is that bind seems to consume a LOT of memory ... well,
>> a lot for low memory devices, i never noticed that on machines with BS
>> of RAM.
>> question is .... is there something i can do to low bind's memory
>> usage and successfully run it on those very low embedded devices ???
> Admittedly, BIND9 tends to require a lot of memory. I'm not sure if
> it can reasonably function with a total system memory of 32MB.
> Some related points:
> - if you enable threads, disable them. With the thread support BIND9
> will require even more memory.
> - "max-cache-size 1048576" is a meaningless configuration:
> Any positive values less than 2MB will be ignored reset
> to 2MB.
> (from ARM)
> - 'rndc flush' doesn't release allocated system memory. It just
> frees all cache entries within the BIND9 process, so it's not
> surprising that you didn't see the memory footprint decrease after
> the flush operation.
> JINMEI, Tatuya
> Internet Systems Consortium, Inc.
> bind-users mailing list
> bind-users at lists.isc.org
Peter and Karin Dambier
Cesidian Root - Radice Cesidiana
Rimbacher Strasse 16
+49(6252)750-308 (VoIP: sipgate.de)
mail: peter at peter-dambier.de
More information about the bind-users