No Buffer Space Available Linux Error
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No Buffer Space Available Windows
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Ping Connect: No Buffer Space Available
connect up vote 3 down vote favorite 2 I'm seeing the error message "No buffer space available" when processes call "connect" on a Linux virtual machine. I'm having trouble tracking down the cause - hopefully someone can help! I've checked the following: (1) File handles: cat /proc/sys/fs/file-nr 4672 0 810707 I'm reading this as (allocated, unused, available) so this looks OK. (2) Sockets or TCP memory: cat /proc/sys/net/ipv4/tcp_mem 191889 255854 383778 cat /proc/net/sockstat sockets: no buffer space available pfsense used 579 TCP: inuse 169 orphan 0 tw 245 alloc 187 mem 5 UDP: inuse 31 mem 4 UDPLITE: inuse 0 RAW: inuse 0 FRAG: inuse 0 memory 0 Reading this as only a total of 579 sockets in use, page totals way below the maximum. There are lots of random TCP tweaks shown on Google - what I'm hoping for in an answer is (1) the resource I'm running out of, (2) how to determine the current value and (3) how to adjust the ceiling. Most of the pages I've found are missing everything except (3)! ** Update #1 ** On Flup's suggestion I did a systrace when it happens (using ping): socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4 connect(4, {sa_family=AF_INET, sin_port=htons(1025), sin_addr=inet_addr("10.140.0.65")}, 16) = -1 ENOBUFS (No buffer space available) ** Update #2 ** I don't know much about the linux kernel source, but I had a dig around and the only place in the connect() path I can see ENOBUFS is here: http://lxr.free-electrons.com/source/net/ipv4/af_inet.c?v=3.11#L353 This looks like it is allocating things in the kernel though with kmem_cache_alloc and security_sk_alloc...? linux buffer share|improve this question edited Mar 8 '15 at 6:11 masegaloeh 14.2k72566 asked Jul 22 '14 at 10:55 user611942 3613 1 Can you show us the output of strace covering the socket() and connect() calls (and the
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No Buffer Space Available Freebsd
and policies of this site About Us Learn more about Stack Overflow no buffer space available (maximum connections reached ) the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users ping no buffer space available mac Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: http://serverfault.com/questions/614453/no-buffer-space-available-on-connect Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Network Error: no buffer space available up vote 11 down vote favorite 2 After some time of running fine, one of our Windows XP SP3 machines does not open some(!) new TCP/IP connections anymore. Putty says Network Error: no buffer space available, http://serverfault.com/questions/131935/network-error-no-buffer-space-available IE won't open any new connections but e.g. network drive mappings still work, even new ones can be established. netstat does not show more open connections that usual, ping and DNS lookups work fine. Any hints? networking windows-xp socket share|improve this question edited Jun 12 '12 at 5:18 mgorven 22.3k43790 asked Apr 13 '10 at 13:14 braindump 128118 Google photo backups was the culprit in my case. Killed that process and the problem was immediately resolved. –davidparks21 Oct 19 '15 at 19:03 add a comment| 5 Answers 5 active oldest votes up vote 3 down vote This can happen because of just about any piece of software that incorrectly holds network buffers without releasing them. It just happened to me in Win7 64bit. Chrome and Firefox stopped being able to connect to any web pages, windows file sharing stopped working, and WinSCP and PuTTY both gave errors that included the words No buffer space available. Oddly, Ubuntu 10 running under VirtualBox seemed to have no problem making new network connections - maybe it holds a number of network bu
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://unix.stackexchange.com/questions/43/freebsd-how-to-fix-ping-sendto-no-buffer-space-available Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody no buffer can answer The best answers are voted up and rise to the top FreeBSD: How to fix “ping: sendto: No buffer space available”? up vote 20 down vote favorite 2 I'm trying to ping a remote host, but I get an error. # ping 192.168.80.1 PING 192.168.80.1 (192.168.80.1): 56 data bytes ping: sendto: No buffer space available ping: sendto: No buffer space available ^C --- 192.168.80.1 ping statistics --- no buffer space 2 packets transmitted, 0 packets received, 100% packet loss It works for other hosts: # ping 192.168.16.1 PING 192.168.16.1 (192.168.16.1): 56 data bytes 64 bytes from 192.168.16.1: icmp_seq=0 ttl=254 time=0.442 ms 64 bytes from 192.168.16.1: icmp_seq=1 ttl=254 time=0.402 ms ^C --- 192.168.16.1 ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.402/0.422/0.442/0.020 ms # The message "No buffer space available" seems to indicate some sort of memory error. And indeed, when I check with Netstat, the "mbuf clusters" number looks VERY wrong: # netstat -m 11780 mbufs in use 4294966716/32768 mbuf clusters in use (current/max) 0/3/6656 sfbufs in use (current/peak/max) 1785 KBytes allocated to network 0 requests for sfbufs denied 0 requests for sfbufs delayed 0 requests for I/O initiated by sendfile 0 calls to protocol drain routines What is going on here? Is there away to fix this without downtime, or do I need to reboot the host or restart the network interface? freebsd networking share|improve this question asked Aug 10 '10 at 19:50 Stefan Lasiewski 5,995154770 1 Can you post your dmesg output? –Mike H Aug 10 '10 at 20:00 I have pasted my own. In my case, it was a backup that was clog