done that as you can see above still same problem
"
kern.ipc.nmbclusters=26214
kern.ipc.nmbufs=131072
"
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Question
(55) No buffer space
We are having this very strange issue on Squid cache server on FreeBSD, the server after few hours hangs up and give this error
2004/08/25 15:42:48| comm_udp_sendto: FD 6, 217.21.5.35, port 53: (55) No buffer space available
2004/08/25 15:42:48| idnsSendQuery: FD 6: sendto: (55) No buffer space available
2004/08/25 15:42:48| comm_udp_sendto: FD 6, 217.21.5.35, port 53: (55) No buffer space available
2004/08/25 15:42:48| idnsSendQuery: FD 6: sendto: (55) No buffer space available
The machine has 2G Ram and 4*36 SCSI HDDs, we tried every single solution on the net with no success, here what is the loader.conf looks like
loader.conf
# -- sysinstall generated deltas -- #
userconfig_script_load="YE
#kern.ipc.maxsockets=32768
kern.ipc.nmbclusters=26214
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=26843545
kern.vm.pmap.shpgperproc=2
net.inet.tcp.tcbhashsize=1
here netstat -m
18072/22208/524288 mbufs in use (current/peak/max):
18072 mbufs allocated to data
17932/22066/262144 mbuf clusters in use (current/peak/max)
49684 Kbytes allocated to network (1% of mb_map in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
WHAT ELSE CAN WE TRY ???
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Answers
now we are having another issue
when trying to brows during peak hours we get the follwing error
ERROR
The requested URL could not be retrieved
--------------------------
While trying to retrieve the URL: http://tarjim.ajeeb.com/
The following error was encountered:
Socket Failure
The system returned:
(49) Can't assign requested addressSquid is unable to create a TCP socket, presumably due to excessive load. Please retry your request.
Your cache administrator is webcache@xxxx.com.
--------------------------
Generated Sun, 05 Sep 2004 19:46:00 GMT by cache1.xxxx.com (squid/2.5.STABLE5)
cache1# uname -sr
FreeBSD 4.9-RELEASE-p8
cache1# uname -a
FreeBSD cache1.xxxx.com 4.9-RELEASE-p8 FreeBSD 4.9-RELEASE-p8 #0: Sat Jun
19 15:21:13 IDT 2004 root@cache1.xxxxx.com:/usr
i386
cache1# uname -sir
uname: illegal option -- i
The machine has 2G Ram and 4*36 SCSI HDDs, CPU single xeon 2.8, fujitsu-siemens TX300 server
loader.conf
# -- sysinstall generated deltas -- #
userconfig_script_load="YE
kern.ipc.nmbclusters=64000
kern.ipc.nmbufs=256000
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=26843545
kern.vm.pmap.shpgperproc=2
kern.ipc.maxsockbuf=262144
net.inet.tcp.tcbhashsize=1
cache1# more sysctl.conf
# $FreeBSD: src/etc/sysctl.conf,v 1.1.2.3 2002/04/15 00:44:13 dougb Exp $
#
# 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.
#
machdep.hlt_logical_cpus=0
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.ip.forwarding=1
vm.v_free_min=131072
vm.v_free_target=262144
vm.v_free_severe=65536
kern.ps_showallprocs=0
vfs.vmiodirenable=1
kern.ipc.maxsockbuf=214748
kern.ipc.somaxconn=16384
net.inet.tcp.rfc1323=1
net.inet.tcp.delayed_ack=0
net.inet.tcp.sendspace=655
net.inet.tcp.recvspace=655
net.inet.udp.recvspace=655
net.inet.udp.maxdgram=6553
net.local.stream.recvspace
net.local.stream.sendspace
netstat -m
18072/22208/524288 mbufs in use (current/peak/max):
18072 mbufs allocated to data
17932/22066/262144 mbuf clusters in use (current/peak/max)
49684 Kbytes allocated to network (1% of mb_map in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
right now the cache is down and here is the netstat -m
cache1# netstat -m
258/17920/256000 mbufs in use (current/peak/max):
257 mbufs allocated to data
1 mbufs allocated to packet headers
256/17710/64000 mbuf clusters in use (current/peak/max)
39900 Kbytes allocated to network (20% of mb_map in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
Same issue :(
2004/09/09 15:33:04| Request header is too large (11680 bytes)
2004/09/09 15:33:04| Config 'request_header_max_size'=
2004/09/09 15:33:04| commBind: Cannot bind socket FD 2021 to *:0: (49) Can't assign requested ad
dress
2004/09/09 15:33:04| commBind: Cannot bind socket FD 1797 to *:0: (49) Can't assign requested ad
dress
2004/09/09 15:33:04| commBind: Cannot bind socket FD 1772 to *:0: (49) Can't assign requested ad
dress
2004/09/09 15:33:04| commBind: Cannot bind socket FD 1831 to *:0: (49) Can't assign requested ad
dress
2004/09/09 15:33:04| commBind: Cannot bind socket FD 1831 to *:0: (49) Can't assign requested ad
dress
2004/09/09 15:33:04| commBind: Cannot bind socket FD 1415 to *:0: (49) Can't assign requested ad
dress
2004/09/09 15:33:04| commBind: Cannot bind socket FD 1415 to *:0: (49) Can't assign requested ad
dress
2004/09/09 15:33:05| commBind: Cannot bind socket FD 270 to *:0: (49) Can't assign requested add
ress
2004/09/09 15:33:05| commBind: Cannot bind socket FD 270 to *:0: (49) Can't assign requested add
ress
2004/09/09 15:33:05| commBind: Cannot bind socket FD 527 to *:0: (49) Can't assign requested add
ress
2004/09/09 15:33:05| commBind: Cannot bind socket FD 527 to *:0: (49) Can't assign requested add
ress
2004/09/09 15:33:05| commBind: Cannot bind socket FD 134 to *:0: (49) Can't assign requested add
ress
cache1# sysctl -a|grep portrange
net.inet.ip.portrange.lowf
net.inet.ip.portrange.lowl
net.inet.ip.portrange.firs
net.inet.ip.portrange.last
net.inet.ip.portrange.hifi
net.inet.ip.portrange.hila
we have switched from direct access list to WCCPv1 and did not help, also we notice that
cache1# netstat -an|wc -l
4141
figure goes above 10000 we get al kinds of trouble
we did that but now wer are having a new error !!!!!
Increased kern.maxfiles=42000
kern.maxfilesproc=32000
and still the same ??
2004/09/10 15:26:27| comm_open: socket failure: (24) Too many open files
2004/09/10 15:26:27| comm_open: socket failure: (24) Too many open files
2004/09/10 15:26:27| comm_open: socket failure: (24) Too many open files
2004/09/10 15:26:28| comm_accept: FD 26: (53) Software caused connection abort
2004/09/10 15:26:28| httpAccept: FD 26: accept failure: (53) Software caused connection abort
2004/09/10 15:26:32| comm_accept: FD 26: (53) Software caused connection abort
2004/09/10 15:26:32| httpAccept: FD 26: accept failure: (53) Software caused con nection abort
2004/09/10 15:26:32| comm_open: socket failure: (24) Too many open files
2004/09/10 15:26:32| comm_open: socket failure: (24) Too many open files
2004/09/10 15:26:32| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| WARNING! Your cache is running out of filedescriptors
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
2004/09/10 16:20:24| comm_open: socket failure: (24) Too many open files
cache1# sysctl -a | grep kern.ipc.somaxconn
kern.ipc.somaxconn: 16384
/etc/login.conf
default:\
:passwd_format=blf:\
:passwordtime=90d:\
:mixpasswordcase=true:\
:minpasswordlen=10:\
:idletime=30:\
:copyright=/etc/COPYRIGHT:
:welcome=/etc/motd:\
:setenv=MAIL=/var/mail/$,B
:path=/sbin /bin /usr/sbin /usr/bin /usr/games /usr/local/sbin /usr/local/bin /usr/X11R6/bin ~/bin:\
:nologin=/var/run/nologin:
:cputime=unlimited:\
:datasize=unlimited:\
:stacksize=unlimited:\
:memorylocked=unlimited:\
:memoryuse=unlimited:\
:filesize=unlimited:\
:coredumpsize=unlimited:\
:openfiles=unlimited:\
:maxproc=unlimited:\
:sbsize=unlimited:\
:vmemoryuse=unlimited:\
:priority=0:\
:ignoretime@:\
:umask=022:
First,
su - squid -c ulimit -n ???
was 8192 we recompiled squid and increased to 32768 according to the following formula
filedescriptors=40+32*maxu
now things are much better
cache1# netstat -an | wc -l
19241
cache1# netstat -m
27345/29536/256000 mbufs in use (current/peak/max):
27342 mbufs allocated to data
3 mbufs allocated to packet headers
27186/29374/64000 mbuf clusters in use (current/peak/max)
66132 Kbytes allocated to network (12% of mb_map in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
but every once a while we get the following ( not as often as it used before)
2004/09/11 14:43:23| Request header is too large (11680 bytes)
2004/09/11 14:43:23| Config 'request_header_max_size'=
2004/09/11 14:43:23| parseHttpRequest: Unsupported method 'recipientid=103&sessionid
2004/09/11 14:43:23| clientReadRequest: FD 14698 Invalid Request
2004/09/11 14:43:24| comm_accept: FD 26: (53) Software caused connection abort
2004/09/11 14:43:24| httpAccept: FD 26: accept failure: (53) Software caused connection abort
2004/09/11 14:43:24| comm_accept: FD 26: (53) Software caused connection abort
2004/09/11 14:43:24| httpAccept: FD 26: accept failure: (53) Software caused connection abort
2004/09/11 14:43:24| Request header is too large (12287 bytes)
2004/09/11 14:43:24| Config 'request_header_max_size'=
2004/09/11 14:43:24| Request header is too large (12287 bytes)
2004/09/11 14:43:24| Config 'request_header_max_size'=
2004/09/11 14:43:26| Request header is too large (11680 bytes)
kern.ipc.somaxconn = 8192 instead of 16000
Looks more like protocol desynchronization
like this is request tail:
> Unsupported method 'recipientid=103&sessionid
e.g. HTTP/1.1 pipelining extension, if you could gather stats of User-agent 's, maybe problem relates to some particular browsers
request headers are usually small(max size is few kilobytes)
maybe upgrading to more recent squid is of help, or using squidclients to automatiaclly restart crashed squid or so.
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by: ramazanyichPosted on 2004-08-30 at 02:33:44ID: 11929495
Try:
kern.ipc.nmbclusters="4096
kern.ipc.nmbufs="16384" # Set the number of mbufs = 4 * nmbclusters
see details on
http://list.cineca.it/cgi-
Hope that helps