Re: Significant memory usage
Well, you’ve provided basically nothing as leads, so it is hard to tell what’s going on with just output of named -V. I would suggest to recompile names with jemalloc enabled and then use jemalloc profiling to see where the memory goes. See https://www.isc.org/blogs/2023-BIND-memory-management-explained/ for more details (search for jeprof for tldr). Ondrej -- Ondřej Surý — ISC (He/Him) My working hours and your working hours may be different. Please do not feel obligated to reply outside your normal working hours. > On 18. 5. 2025, at 23:21, Philip Prindeville via bind-users > wrote: > > Hi, > > I’ve been running 9.20.7 on OpenWRT for over a year without issues. > Yesterday, however, it died because of OOM (out-of-memory) kill from the > kernel. > > I use it with isc-dhcp service for IPv4, and do split horizon for internal > domains. > > What I’ve noticed is that at startup I’m using about 33K pages as the VSZ > (per top on x86_64 hardware). > > Within a minute, however, that’s doubled to 72600+ pages. More than double. > > This is a small network with 1 domain (plus two rDNS domains), and not more > than 400 RR’s total. > > If I do an “rndc flush” is drops about 3000 pages, but slowly starts creeping > up again. > > I updated to 9.20.8 a few minutes ago but I’m still seeing the same issue. > > root@OpenWrt:~# named -V > BIND 9.20.8 (Stable Release) > running on Linux x86_64 6.6.41 #0 SMP Sat Jul 27 03:38:57 2024 > built by make with '--target=x86_64-openwrt-linux' > '--host=x86_64-openwrt-linux' '--build=x86_64-pc-linux-gnu' > '--disable-dependency-tracking' '--program-prefix=' '--program-suffix=' > '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' > '--sbindir=/usr/sbin' '--libexecdir=/usr/lib' '--sysconfdir=/etc' > '--datadir=/usr/share' '--localstatedir=/var' '--mandir=/usr/man' > '--infodir=/usr/info' '--disable-geoip' > '--with-openssl=/home/philipp/lede/staging_dir/target-x86_64_musl/usr' > '--without-lmdb' '--without-readline' '--sysconfdir=/etc/bind' > '--with-json-c=no' '--with-libxml2=no' '--enable-doh' '--without-gssapi' > 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-openwrt-linux' > 'target_alias=x86_64-openwrt-linux' 'CC=x86_64-openwrt-linux-musl-gcc' > 'CFLAGS=-Os -pipe -g3 -fno-caller-saves -fno-plt -fhonour-copts > -fmacro-prefix-map=/home/philipp/lede/build_dir/target-x86_64_musl/bind-9.20.8=bind-9.20.8 > -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 > -Wl,-z,now -Wl,-z,relro ' > 'LDFLAGS=-L/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/usr/lib > -L/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/lib > -fuse-ld=bfd -znow -zrelro -Wl,--gc-sections,--as-needed ' > 'CPPFLAGS=-I/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/usr/include > -I/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/include > -I/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/include/fortify >' 'PKG_CONFIG=/home/philipp/lede/staging_dir/host/bin/pkg-config' > 'PKG_CONFIG_PATH=/home/philipp/lede/staging_dir/target-x86_64_musl/usr/lib/pkgconfig:/home/philipp/lede/staging_dir/target-x86_64_musl/usr/share/pkgconfig' > > 'PKG_CONFIG_LIBDIR=/home/philipp/lede/staging_dir/target-x86_64_musl/usr/lib/pkgconfig:/home/philipp/lede/staging_dir/target-x86_64_musl/usr/share/pkgconfig' > compiled by GCC 14.2.0 > compiled with OpenSSL version: OpenSSL 3.0.16 11 Feb 2025 > linked to OpenSSL version: OpenSSL 3.0.14 4 Jun 2024 > compiled with libuv version: 1.48.0 > linked to libuv version: 1.48.0 > compiled with liburcu version: 0.15.2 > compiled with libnghttp2 version: 1.63.0 > linked to libnghttp2 version: 1.62.1 > compiled with zlib version: 1.3.1 > linked to zlib version: 1.3.1 > threads support is enabled > DNSSEC algorithms: RSASHA1 NSEC3RSASHA1 RSASHA256 RSASHA512 ECDSAP256SHA256 > ECDSAP384SHA384 ED25519 ED448 > DS algorithms: SHA-1 SHA-256 SHA-384 > HMAC algorithms: HMAC-MD5 HMAC-SHA1 HMAC-SHA224 HMAC-SHA256 HMAC-SHA384 > HMAC-SHA512 > TKEY mode 2 support (Diffie-Hellman): no > TKEY mode 3 support (GSS-API): no > > default paths: > named configuration: /etc/bind/named.conf > rndc configuration: /etc/bind/rndc.conf > nsupdate session key: /var/run/named/session.key > named PID file: /var/run/named/named.pid > root@OpenWrt:~# > > What would explain the sudden increase in memory usage when the environment > has been relatively static? > > Thanks, > > -Philip > > > > -- > Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from > this list > > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development
Re: 3Rd Follow Up - Re: My Introduction and current issues
On 18.05.2025 19:53, bi...@clearviz.biz wrote: I include it because all of the packets seem to have the same problem (the router attempts a ping to my main server (ending in octet ".10"), which it claims the host is unreachable. Not sure why that is happening. I think you're misunderstanding the ICMP 'Destination unreachable' packet - it's not that your router attempts to 'ping' the server, it's the router informing the server that it's intended destination is unreachable. Since that ICMP packet is always preceded by a DNS query directed to either 1.1.1.1 or 8.8.8.8, it might imply that either your router or something further along (i.e. your ISP) is not allowing the DNS query packets to pass. Since Bind v9.18 has been in use for quite a while and is still widely used today (without such major issues), I very much doubt your issues are caused by Bind. Danilo -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Significant memory usage
Hi, I’ve been running 9.20.7 on OpenWRT for over a year without issues. Yesterday, however, it died because of OOM (out-of-memory) kill from the kernel. I use it with isc-dhcp service for IPv4, and do split horizon for internal domains. What I’ve noticed is that at startup I’m using about 33K pages as the VSZ (per top on x86_64 hardware). Within a minute, however, that’s doubled to 72600+ pages. More than double. This is a small network with 1 domain (plus two rDNS domains), and not more than 400 RR’s total. If I do an “rndc flush” is drops about 3000 pages, but slowly starts creeping up again. I updated to 9.20.8 a few minutes ago but I’m still seeing the same issue. root@OpenWrt:~# named -V BIND 9.20.8 (Stable Release) running on Linux x86_64 6.6.41 #0 SMP Sat Jul 27 03:38:57 2024 built by make with '--target=x86_64-openwrt-linux' '--host=x86_64-openwrt-linux' '--build=x86_64-pc-linux-gnu' '--disable-dependency-tracking' '--program-prefix=' '--program-suffix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--libexecdir=/usr/lib' '--sysconfdir=/etc' '--datadir=/usr/share' '--localstatedir=/var' '--mandir=/usr/man' '--infodir=/usr/info' '--disable-geoip' '--with-openssl=/home/philipp/lede/staging_dir/target-x86_64_musl/usr' '--without-lmdb' '--without-readline' '--sysconfdir=/etc/bind' '--with-json-c=no' '--with-libxml2=no' '--enable-doh' '--without-gssapi' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-openwrt-linux' 'target_alias=x86_64-openwrt-linux' 'CC=x86_64-openwrt-linux-musl-gcc' 'CFLAGS=-Os -pipe -g3 -fno-caller-saves -fno-plt -fhonour-copts -fmacro-prefix-map=/home/philipp/lede/build_dir/target-x86_64_musl/bind-9.20.8=bind-9.20.8 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro ' 'LDFLAGS=-L/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/usr/lib -L/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/lib -fuse-ld=bfd -znow -zrelro -Wl,--gc-sections,--as-needed ' 'CPPFLAGS=-I/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/usr/include -I/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/include -I/home/philipp/lede/staging_dir/toolchain-x86_64_gcc-14.2.0_musl/include/fortify ' 'PKG_CONFIG=/home/philipp/lede/staging_dir/host/bin/pkg-config' 'PKG_CONFIG_PATH=/home/philipp/lede/staging_dir/target-x86_64_musl/usr/lib/pkgconfig:/home/philipp/lede/staging_dir/target-x86_64_musl/usr/share/pkgconfig' 'PKG_CONFIG_LIBDIR=/home/philipp/lede/staging_dir/target-x86_64_musl/usr/lib/pkgconfig:/home/philipp/lede/staging_dir/target-x86_64_musl/usr/share/pkgconfig' compiled by GCC 14.2.0 compiled with OpenSSL version: OpenSSL 3.0.16 11 Feb 2025 linked to OpenSSL version: OpenSSL 3.0.14 4 Jun 2024 compiled with libuv version: 1.48.0 linked to libuv version: 1.48.0 compiled with liburcu version: 0.15.2 compiled with libnghttp2 version: 1.63.0 linked to libnghttp2 version: 1.62.1 compiled with zlib version: 1.3.1 linked to zlib version: 1.3.1 threads support is enabled DNSSEC algorithms: RSASHA1 NSEC3RSASHA1 RSASHA256 RSASHA512 ECDSAP256SHA256 ECDSAP384SHA384 ED25519 ED448 DS algorithms: SHA-1 SHA-256 SHA-384 HMAC algorithms: HMAC-MD5 HMAC-SHA1 HMAC-SHA224 HMAC-SHA256 HMAC-SHA384 HMAC-SHA512 TKEY mode 2 support (Diffie-Hellman): no TKEY mode 3 support (GSS-API): no default paths: named configuration: /etc/bind/named.conf rndc configuration: /etc/bind/rndc.conf nsupdate session key: /var/run/named/session.key named PID file: /var/run/named/named.pid root@OpenWrt:~# What would explain the sudden increase in memory usage when the environment has been relatively static? Thanks, -Philip -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
