High Nice Cpu Usage
Just for humor and history, when I having time issues, my COD4 server would run like the Matrix lobby scene, all gun shooting slow mo with random speed ups. cc_htcp_load="YES" # hostcache cachelimit is the number of ip addresses in the hostcache list. # Setting the value to zero(0) stops any ip address connection information from # being cached and Show : My Main System FreeNAS-9.3.1-STABLE-(likely forever) | Intel Xeon E3-1230v2 | Supermicro X9SCM-F 32GB DDR3 ECC 1600 RAM | 32GB SATA DOM | Cyberpower 1500AVR | Ten WD Red WD60EFRX USB Sub-menu level: /system resource usb This menu displays all available USB controllers on the board. http://technologyprometheus.com/cpu-usage/sar-nice.html
While a good idea in principle, unfortunately it provided a very # small performance boost in less than 10% of connections and opens up the # possibility of a DoS vector. A system with two dual-core hyper-threaded CPUs presents a # challenge to a scheduling algorithm. The default is 128 # connections per application thread. Newer Than: Search this thread only Search this forum only Display results as threads More...
High Nice Cpu Usage
Additional gains # are obtained when the receiving application is using SO_RCVLOWAT to batch up # some data before a read (and wakeup) is done. It's fine now, core temps are much more normal, and the box is silent and performant for my use case. The problem is the NIC can build a packet that is the wrong # size and would be dropped by a switch or the receiving machine, like for NFS # fragmented
ifconfig_igb0="dhcp lladdr 11:22:33:44:55:66 -lro -tso" # LAN: set a private, non-routable ip in the class A 10.0.0.0/8 reserved # address space, disable LRO/TSO support since this is a firewall/router and # Note # that OpenSSL uses the random device /dev/random for seeding automatically. # http://manpages.ubuntu.com/manpages/lucid/man4/random.4freebsd.html #kern.random.yarrow.gengateinterval=10 # default 10 [4..64] #kern.random.yarrow.bins=10 # default 10 [2..16] #kern.random.yarrow.fastthresh=192 # default 192 [64..256] #kern.random.yarrow.slowthresh=256 # But unfortunately the CIFS sharing software only uses one thread, so if you're using Windows shares then really you're using 75% of 100% (one core). Freebsd Tcp Window Size The Network Tuning and Performance Guide uses both hardware setups and similar network modifications.
The OpenSSL library also provides functions for # managing randomness via functions such as RAND_bytes(3) and RAND_add(3). Freebsd Network Tuning Does that mean server is healthy? with that hardware. http://forums.nas4free.org/viewtopic.php?t=6950 Total Cost $150 – MB + Drives (2 x 1TB) + RAM All power numbers excludes the 25 Watts of power supply quiescent power.
A host cache entry is # the client's cached tcp connection details and metrics (TTL, SSTRESH and # VARTTL) the server can use to improve future performance of connections # between Freebsd Vs Linux Network Performance The # IPv4 routing cache was intended to eliminate a FIB lookup and increase # performance. The defaults are fine for # networks up to 10Gbit with less than 3ms latency (4194240*8/.003/10^6). RFC 6691 states the maximum segment size should equal the # effective MTU minus the fixed IP and TCP headers, but without subtracting IP # or TCP options.
Freebsd Network Tuning
But all isn't rosy with DMA devices either.DMA devices have direct memory access to your system when plugged in.This is handled in hardware, so no drivers or anything your OS can http://technologyprometheus.com/cpu-usage/hp-high-cpu-usage.html You can also disable TSO in /etc/rc.conf using the # "-tso" directive after the network card configuration; for example, # ifconfig_igb0="inet 10.10.10.1 netmask 255.255.255.0 -tso". This because I would like to change my Intel(R) Atom(TM) CPU D525 @ 1.80GHzwith AMD APU C-60 1.0GHz Dual-Core Lucas Rey, May 4, 2013 #3 JaimieV FreeNAS Experienced Joined: Oct This limit is in place # because of inefficiencies in IRQ sharing when the network card is using the # same IRQ as another device. Sar %nice
It is not recommend to allow more network queues than real CPU cores # per network port. # # Query total interrupts per queue with "vmstat -i" and use "top -H For # the majority of networks under 10gig the defaults are fine. Even though syncookies are helpful # during a DoS, we are going to disable syncookies at this time. http://technologyprometheus.com/cpu-usage/bf1-high-cpu-usage.html buffer incoming connections until complete HTTP requests # arrive (nginx apache) for nginx http add, "listen 127.0.0.1:80 # accept_filter=httpready;" #accf_http_load="YES" # FreeBSD kernel accept filter for non-http daemons, like https (ssl)
FreeBSD 10 supports the new drivers which reduces interrupts # significantly. #hw.igb.max_interrupt_rate="32000" # (default 8000) # Intel igb(4): using older intel drivers and jumbo frames caused memory # fragmentation as header
vendor-id (hex) Hexadecimal vendor ID PCI Sub-menu level: /system resource pci PCI submenu shows the information about all PCI devices on the board [[email protected]] /system resource pci> print # DEVICE VENDOR If you want to have your data stored safely, ECC is prerequisite for using ZFSNot using ECC RAM is a timebomb, which can lead to a complete loss of data due Supermicro X10SLL-F, 16gb ECC, i3 4130, IBM M1015 with IT firmware. 4x 3tb WD Red, 4x 2TB Samsung F4, both GEOM AES 256 encrypted. Freebsd Nfs Tuning On ethernet interfaces interrupt=packet.
JaimieV, May 5, 2013 #6 Lucas Rey FreeNAS Experienced Joined: Jul 25, 2011 Messages: 108 Thanks Received: 3 Trophy Points: 21 JaimieV said: ↑ perhaps Lucas is doing something obviously IRQ-intensive By disabling physical link flow # control the link instead relies on TCP's internal flow control which is peer # based on IP address and more fair to each flow. It answers common questions newbies to FreeNAS have. this contact form Increase kern.ipc.maxsockbuf only if the counters for "mbufs # denied" or "mbufs delayed" are greater than zero(0).
And yes, thanks cyberjock for your great IRQ explanation!Click to expand... Be warned that setting the harvest mask abouve 511 will # probibly limit network thoughput to less than a gigabit. #kern.random.harvest.mask=2047 # (default 511) # security settings for jailed environments. The nice and renice programs set the nice priority. The only shot you posted of 'top' output looks to me like the CPU is spending its time polling the NICs, which is unrelated to HPET interrupts, and is from when
Your edit is exactly what I was interested in - perhaps Lucas is doing something obviously IRQ-intensive such as using USB HDDs? By default, FreeBSD will # send out 200 packets per second. #net.inet.icmp.icmplim=1 # (default 200) #net.inet.icmp.icmplim_output=0 # (default 1) # Selective Acknowledgment (SACK) allows the receiver to inform the sender of Limiting reply packets helps curb # the effects of Brute-force TCP denial of service (DoS) attacks and UDP port # scans. The larger buffer # space should allow services which listen on localhost, like web or database # servers, to more efficiently move data to the network buffers. #net.inet.raw.maxdgram=16384 # (default 9216)
In # continuous communication all available ISN options could be used up in a few # hours. sub mesaOct 31, 2010, 7:32 PM Older 7200rpm disks require 30-35W to spin up; don't use those with PicoPSU. Please help today!Produce and hosting N4F does cost money, please consider a small donation to our project so that we can stay offering you the best.We really do need your support!We An MMS # of 1448 bytes has a 96.5% packet efficiency (1448/1500=0.965) WARNING: if you # are using PF with an outgoing scrub rule then PF will re-package the packet #