search for: nmbclusters

...s) internetgateway refused to boot its new kernel, it was a 4.7-RELEASE. Then i loaded the old kernel and went home to check if my 4.8-STABLE does likewise. And the answer was yes! Both kernels were GENERIC + these options taken from the dummynet man pages: options DUMMYNET options NMBCLUSTERS options HZ When i boot the machine it suddently reboots when the kernel starts loading, i can just manage to see something about "panic: mbinit" before it reboots. Both systems are i386. I hope any of you can tell what's wrong, i really need this feature. Regards, Johan Chr...

Hi All, Mysql service is going down continously in my system due to lack of memory space. I checked the messages log and found the following error message. All mbuf clusters exhausted, please see tuning(7). I have no idea about mbuf cluster. Can anyone please help me to fix the issue. I hope the information below will help you. Following is the output of top. last pid: 84718; load

...t to learn about requirements if I want to protect gigabit network with ipfilter as transparent firewall. Which type of hardware is required to install FreeBSD + ipf (as transparancy ) . We use 3 gigabit ethernet to protection which type of gigabit ethernet carts are powerfull. Also, what about the NMBCLUSTERS , IPSTATE_SIZE and IPSTATE_MAX in ip_state.h. I want to collect all information on that requirement. Regards, Murat Ustuntas

...n my router going where my apache HTTP server is flooded with short-timed connections from some host. This results in LOTS of sockets in TIME_WAIT/LAST_ACK/CLOSING states and eventually I'm out of mbufs, which, consequently means I can't even connect to the router from LAN. The kern.ipc.nmbclusters is 2560, (I guess high enough for router with DSL connection). After some time all mbufs are depleted (system says "All mbuf cluster exhausted"). However, unexpectedly the system panics shortly in about 10 minutes (+/-) with: /kernel: All mbuf cluster exhausted, please see tuning(7) /...

Ive been googling quite a bit now for problems with running out of mbuf clusters. Im basically sending a 30k datachunk down 1000-4000 connections, but 1000 is more than enough to quickly fill upp 8192 mbuf clusters. I also tried setting maximum amount of mbuf clusters to 65536, but that only made the box hard-wire 86MB of 96MB RAM, making it just as unsuable as a dead machine. Of course, when the

...and a half or so of uptime, I'm getting the aforementioned panic on the server ... better then having it hang solid, but right now I'm not sure if this is replacing it, or just one being triggered earlier then the other ... First scan through Google, I came across some posts talking about NMBCLUSTERS ... since its at the same settings as my other server (the default) and it hasn't experienced similar problems, I'm guessing that that isn't the cause ... Now, on neptune (the one with issues), I have KVA_PAGES set to 292, which, when it crashed, had vm.kvm_free: 104857600 available...

I finally got a 10G card that is recognized by FreeBSD (9.1-stable): ... ix0: <Intel(R) PRO/10GbE PCI-Express Network Driver, Version - 2.4.8> port 0xecc0-0xecdf mem 0xd9e80000-0xd9efffff,0xd9ff8000-0xd9ffbfff irq 40 at device 0.0 on pci4 ix0: Using MSIX interrupts with 9 vectors ix0: RX Descriptors exceed system mbuf max, using default instead! ix0: Ethernet address: 90:e2:ba:29:c0:54

...re and my tuning. Here are the server stats: * 2x Xeon 2.8 with SMP compiled, hyperthreading NOT compiled in kernel * 4 GB of RAM, 8 GB of swap on Raid 1 (15K RPM drives) for speed * User Data is on Raid 5 in a detached PowerVault Contents of /boot/loader.conf: kern.ipc.maxsockets=32768 kern.ipc.nmbclusters=32768 kern.ipc.nmbufs=131072 kern.ipc.nsfbufs=6656 kern.ipc.shm_use_phys=1 kern.maxfiles=32768 kern.maxproc=8192 kern.maxswzone=33554432 kern.nbuf=16384 kern.ncallout=32768 kern.vm.kmem.size=268435456 kern.vm.pmap.shpgperproc=2048 net.inet.tcp.tcbhashsize=16384 Contents of /etc/sysctl.conf: kern....

Hello everyone, I am trying to tweak some of the sysctl tunables for the ix (ixgbe) driver in FreeBSD 9.2 since I am experiencing less than ideal performance and it seems like I can't find any: # sysctl -a | grep -i ixgbe device ixgbe I am running 9.2-RC4. Any input appreciated. Thanks, -- Rumen Telbizov Unix Systems Administrator <http://telbizov.com>

...ur internetgateway refused to boot its new kernel, it was a 4.7-RELEASE. Then i loaded the old kernel and went home to check if my 4.8-STABLE does likewise. And the answer was yes! Both kernels were GENERIC + these options taken from the dummynet man pages: options DUMMYNET options NMBCLUSTERS options HZ When i boot the machine it suddently reboots when the kernel starts loading, i can just manage to see something about "panic: mbinit" before it reboots. Both systems are i386. I hope any of you can tell what's wrong, i really need this feature. Regards, Johan Chr...

...ystem options SHMSEG=16 options SHMMNI=32 options SHMMAX=2097152 options SHMALL=4096 options MAXDSIZ="(2048UL*1024*1024)" options MAXSSIZ="(2048UL*1024*1024)" options DFLDSIZ="(2048UL*1024*1024)" options NMBCLUSTERS=65535 options NBUF=16384 When I am port-forwarding the traffic to the squid without wccp the machine is stable and works fine. The problem appears after setting squid with wccp and bringing gre interfaces. I've tried different settings but with no effect. The squid passes arround 20 mb...

...ocess is to copy the entire OS to a ramdisk and boot off of that. I use the following ideas for this: /boot/loader.conf: mfsroot_type="mfs_root" mfsroot_name="/mfsboot" vfs.root.mountfrom="ufs:md0" vfs.root.mountfrom.options="rw" ## Tunables kern.ipc.nmbclusters=32768 net.inet.tcp.tcbhashsize=16384 vm.pmap.pg_ps_enabled=1 accf_http_load="YES" net.inet.tcp.syncache.hashsize=1024 net.inet.tcp.syncache.bucketlimit=100 The size of mfsboot is 600M. The diff between GENERIC and my kernel config, comments left in so people can see what I was doi...

...tions DUMMYNET (e.g. 40% for web, 30% for mail and so on) > options DEVICE_POLLING (can't do this short and not with SMP) > options HZ=1000 (can't do this short and not with SMP) > > Sysctl; > kern.ipc.somaxconn=1024 #this is set high! > kern.ipc.nmbclusters=65536 #this is set high! > kern.polling.enable=1 #remember kernel options > kern.polling.user_frac=50>90 #remember kernel options > net.xorp.polling=1 > net.xorp.poll_burst=10 > net.xorp.poll_in_trap=3 > (if you use dynamic rules in ipfw [stateful] you can tweak this...

We have 10 SuperMicro PDSMi+ 5015M-MTs that are panic'ing every few days. This started shortly after upgrade from 6.2-RELEASE to 6.3-RELEASE with freebsd-update. Other than switching to a debugging kernel, a little sysctl tuning, and patching with freebsd-update, they are stock. The debugging kernel was built from source that is also being patched with freebsd-update. These systems are

...don't *think* it's apache (1.3.27) that's causing the problem, or am I wrong? I also believe it is not a load issue as the load does not get much about 2 most of the time. The only special kernel config is that it's an SMP kernel and the following options are set: options NMBCLUSTERS=20000 options PMAP_SHPGPERPROC=600 options IPFIREWALL options DUMMYNET Below is a copy of the panic message I got from a serial console and below that is a dmesg from today. Fatal trap 12: page fault while in kernel mode mp_lock = 01000002; cpuid = 1; lapic.id = 00000000 f...

...t IO_COM2 irq 3 device pci device agp device miibus device fxp # Intel EtherExpress PRO/100B (82557, 82558) device ppc0 at isa? irq 7 device ppbus device lpt device plip device ppi options NMBCLUSTERS=8192 device uhci device usb device mgadrm options COMPAT_LINUX ---------------------------------------------------------------------------- -- -------------[ make.conf ]------------------------------------------------- CPUTYPE=athlon-xp CFLAGS= -O -pipe BDECFL...

Andre, Are you going to have time to MFC things from -current for auto-tuning -stable before 9.2? I fear (maybe unnecessarily?) that we are about to ship yet another release that can't do basic 10gigE when sufficient memory exists. If you don't have time, then let me know and I'll see what I can do. -- Alfred Perlstein VP Software Engineering, iXsystems

...SC_NORM_REV_ATTR="(FG_YELLOW|BG_GREEN)" options SC_KERNEL_CONS_ATTR="(FG_RED|BG_BLACK)" options SC_KERNEL_CONS_REV_ATTR="(FG_BLACK|BG_RED)" options UFS_DIRHASH options INCLUDE_CONFIG_FILE options NMBUFS=81408 options NMBCLUSTERS=20352 device isa device pci device fdc0 at isa? port IO_FD1 irq 6 drq 2 device fd0 at fdc0 drive 0 device fd1 at fdc0 drive 1 device ata0 at isa? port IO_WD1 irq 14 device ata1 at isa? port IO_WD2 irq 15 device...

...t link up The kernel config is derived from GENERIC. I've removed devices which are not needed, and added the following: options MAXDSIZ="(768*1024*1024)" options MAXSSIZ="(256*1024*1024)" options DFLDSIZ="(512*1024*1024)" options NMBCLUSTERS=32768 options INCLUDE_CONFIG_FILE # Include this file in kernel options CPU_ENABLE_SSE # Enable SSE/MMX2 instructions support. options USER_LDT # Allow user-level control of i386 LDT. options DDB # Enable the kernel deb...

...00001 in ?? () in /boot/loader.conf I have: vm.kmem_size=1536M # 2 Mb KVA/kmem net.inet.tcp.tcbhashsize=131072 # 64M KVA kern.maxbcache=64M # 4M KVA kern.ipc.maxpipekva=4M # net.inet.tcp.syncache.hashsize=1024 net.inet.tcp.syncache.bucketlimit=100 in /etc/sysctl.conf # 576 Mb KVA/kmem kern.ipc.nmbclusters=262144 kern.ipc.nmbjumbop=65536 kern.ipc.maxsockets=307200 kern.ipc.somaxconn=4096 kern.maxfiles=307200 kern.maxfilesperproc=102400 $ sysctl vm.kvm_free vm.kvm_free: 327151616 netstat -m output, several seconds before panic: 380270/63895/444165 mbufs in use (current/cache/total) 14141/29273/434...