Date: Tue, 15 Oct 2013 13:18:28 +0200 From: Carlos Jacobo Puga Medina <cjpugmed@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: Tuning /etc/sysctl.conf Message-ID: <CAHHLbRNWtyxs75B9ghOWQSWv2yXtZd_5yJytErXkTWE9jkgtdA@mail.gmail.com> In-Reply-To: <CAHHLbRP==zqi=L6x-rjC4XShU09K_fVDuxUtVBMBXX_-7eNQyA@mail.gmail.com> References: <CAHHLbRMzNtGWAg1DGh405d5BVzORMDE-qC9qts%2BxzbUmAWtgew@mail.gmail.com> <CAHHLbRPuJy7bMw0fzcq_zTr9GxGqsZpbz_%2BpDgjgRt4QwJKvYw@mail.gmail.com> <CAHHLbRP==zqi=L6x-rjC4XShU09K_fVDuxUtVBMBXX_-7eNQyA@mail.gmail.com>
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Thanks for your last input. All is quite clear, I will leave the tuning as such it's set currently, because I use it exactly as you described it at the end of your post. If by chance, you recommend me reading a recent blog or link about the subject I will appreciate it. --CJPM 2013/10/14 Carlos Jacobo Puga Medina <cjpugmed@gmail.com> > Hi Steve, > > I use it as a paticular desktop PC. Well, if you need more details about > it, please, let me know. > What do you think about current tuning? > > Thanks > --CJPM > > > 2013/10/14 Carlos Jacobo Puga Medina <cjpugmed@gmail.com> > >> Mmm... just a correction in /etc/sysctl.conf, it seems that by mistake >> I've copied a website link into the file. Sorry, it was a copy-paste error >> :) >> >> % cat /etc/sysctl.conf >> # $FreeBSD: release/9.2.0/etc/sysctl.conf 112200 2003-03-13 18:43:50Z mux >> $ >> # >> # This file is read when going to multi-user and its contents piped thru >> # ``sysctl'' to adjust kernel values. ``man 5 sysctl.conf'' for details. >> # >> >> # Uncomment this to prevent users from seeing information about processes >> that >> # are being run under another UID. >> #security.bsd.see_other_uids=0 >> vfs.usermount=1 >> hw.snd.default_unit=2 >> kern.ipc.maxsockbuf=16777216 >> kern.ipc.nmbclusters=32768 >> kern.ipc.shm_allow_removed=1 >> kern.ipc.somaxconn=8192 >> kern.maxfiles=65536 >> kern.maxfilesperproc=32768 >> net.inet.tcp.blackhole=2 >> net.inet.tcp.delayed_ack=0 >> net.inet.tcp.path_mtu_discovery=0 >> net.inet.tcp.recvbuf_auto=1 >> net.inet.tcp.recvbuf_inc=16384 >> net.inet.tcp.recvbuf_max=16777216 >> net.inet.tcp.recvspace=65536 >> net.inet.tcp.rfc1323=1 >> net.inet.tcp.sendbuf_auto=1 >> net.inet.tcp.sendbuf_inc=8192 >> net.inet.tcp.sendspace=65536 >> net.inet.udp.blackhole=1 >> net.inet.udp.maxdgram=57344 >> net.inet.udp.recvspace=65536 >> net.local.stream.recvspace=65536 >> net.local.stream.sendspace=65536 >> net.inet.tcp.sendbuf_max=16777216 >> net.inet.ip.random_id=1 >> >> # Allow for up 2 GB of wired memory. >> vm.max_wired=524288 >> >> >> >> 2013/10/14 Carlos Jacobo Puga Medina <cjpugmed@gmail.com> >> >>> Hi people, >>> >>> I'm very interested to tuning /etc/sysctl.conf according to the >>> specifications of my PC. I've been reading some guides [1], tutorials >>> [2-3], Q&A [4] and the FreeBSD Handbook's related section 12.12 Tuning with >>> sysctl(8), but I think it's much more convenient if I contrast it with >>> other examples or experienced users. >>> >>> Here is my relevant info outputs for help to improve the sysctl(8) >>> variables. >>> >>> % uname -a >>> FreeBSD freebsd 9.2-RELEASE FreeBSD 9.2-RELEASE #0 r255898: Fri Sep 27 >>> 03:52:52 UTC 2013 root@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC >>> i386 >>> >>> % dmesg | grep CPU >>> CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (2394.06-MHz 686-class CPU) >>> cpu0: <ACPI CPU> on acpi0 >>> p4tcc0: <CPU Frequency Thermal Control> on cpu0 >>> >>> % dmesg | grep memory >>> real memory = 2147483648 (2048 MB) >>> avail memory = 2082701312 (1986 MB) >>> >>> % pciconf -lvv | grep -n2 Ethernet >>> 41-sis0@pci0:0:4:0: class=0x020000 card=0x80a71043 chip=0x09001039 >>> rev=0x91 hdr=0x00 >>> 42- vendor = 'Silicon Integrated Systems [SiS]' >>> 43: device = 'SiS900 PCI Fast Ethernet' >>> 44- class = network >>> 45- subclass = ethernet >>> >>> My /etc/sysctl.conf >>> >>> # $FreeBSD: release/9.2.0/etc/sysctl.conf 112200 2003-03-13 18:43:50Z >>> mux $ >>> # >>> # This file is read when going to multi-user and its contents piped thru >>> # ``sysctl'' to adjust kernel values. ``man 5 sysctl.conf'' for >>> details. >>> # >>> >>> # Uncomment this to prevent users from seeing information about >>> processes that >>> # are being run under another UID. >>> #security.bsd.see_other_uids=0 >>> vfs.usermount=1 >>> hw.snd.default_unit=2 >>> kern.ipc.maxsockbuf=16777216 >>> kern.ipc.nmbclusters=32768 >>> kern.ipc.shm_allow_removed=1 >>> kern.ipc.somaxconn=8192 >>> kern.maxfiles=65536 >>> kern.maxfilesperproc=32768 >>> net.inet.tcp.blackhole=2 >>> net.inet.tcp.delayed_ack=0 >>> net.inet.tcp.path_mtu_discovery=0 >>> net.inet.tcp.recvbuf_auto=1 >>> net.inet.tcp.recvbuf_inc=16384 >>> net.inet.tcp.recvbuf_max=16777216 >>> net.inet.tcp.recvspace=65536 >>> net.inet.tcp.rfc1323=1 >>> net.inet.tcp.sendbuf_auto=1 >>> net.inet.tcp.sendbuf_inc=8192 >>> net.inet.tcp.sendspace=65536 >>> net.inet.udp.blackhole=1 >>> net.inet.udp.maxdgram=57344 >>> net.inet.udp.recvspace=65536 >>> net.local.stream.recvspace=65536 >>> net.local.stream.sendspace=65536 >>> net.inet.tcp.sendbuf_max=16777216 >>> net.inet.ip.random_id=1 >>> >>> http://serverfault.com/questions/64356/freebsd-performance-tuning-sysctls-loader-conf-kernel >>> # Allow for up 2 GB of wired memory. >>> vm.max_wired=524288 >>> >>> I will appreciate any input about the subject. >>> --CJPM >>> >>> [1] http://harryd71.blogspot.com.es/2008/10/tuning-freenas-zfs.html >>> [2] https://wiki.freebsd.org/SystemTuning#SYSCTL_TUNING >>> [3] https://wiki.freebsd.org/NetworkPerformanceTuning >>> [4] >>> http://serverfault.com/questions/64356/freebsd-performance-tuning-sysctls-loader-conf-kernel >>> >> >> >
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