Server To Hang/overload Once Its Rebooted
Apr 5, 2007how can i find out what has caused my server to hang/overload once its rebooted?
I know that the SWAP maxed out but i am unsure why.
ADVERTISEMENT
Rebooted After Receiving A Few Of The Following Kernel Message
Nov 8, 2008The server have to be rebooted after receiving a few of the following kernel message..
Nov 8 12:13:40 server1 kernel: sim invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0
Nov 8 12:13:40 server1 kernel: [<c04588d9>] out_of_memory+0x72/0x1a5
Nov 8 12:13:40 server1 kernel: [<c0459dae>] __alloc_pages+0x216/0x297
Nov 8 12:13:40 server1 kernel: [<c045b01b>] __do_page_cache_readahead+0xc4/0x1c6
Nov 8 12:13:40 server1 kernel: [<c04555e8>] sync_page+0x0/0x3b
Nov 8 12:13:40 server1 kernel: [<c04506fd>] __delayacct_blkio_end+0x32/0x35
Nov 8 12:13:40 server1 kernel: [<c06089bf>] __wait_on_bit_lock+0x4b/0x52
Nov 8 12:13:40 server1 kernel: [<c0455563>] __lock_page+0x52/0x59
Nov 8 12:13:40 server1 kernel: [<c0457e8a>] filemap_nopage+0x151/0x313
Nov 8 12:13:40 server1 kernel: [<c0460b48>] __handle_mm_fault+0x178/0x8b3
Nov 8 12:13:40 server1 kernel: [<c042f77c>] do_sigaction+0xb5/0x155
Nov 8 12:13:40 server1 kernel: [<c060a9db>] do_page_fault+0x20a/0x4b8
Nov 8 12:13:40 server1 kernel: [<c060a7d1>] do_page_fault+0x0/0x4b8
Nov 8 12:13:40 server1 kernel: [<c0405a71>] error_code+0x39/0x40
Nov 8 12:13:40 server1 kernel: =======================
Nov 8 12:13:40 server1 kernel: Mem-info:
Nov 8 12:13:40 server1 kernel: DMA per-cpu:
Nov 8 12:13:40 server1 kernel: cpu 0 hot: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: cpu 0 cold: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: cpu 1 hot: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: cpu 1 cold: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: cpu 2 hot: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: cpu 2 cold: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: cpu 3 hot: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: cpu 3 cold: high 0, batch 1 used:0
Nov 8 12:13:40 server1 kernel: DMA32 per-cpu: empty
Nov 8 12:13:40 server1 kernel: Normal per-cpu:
Nov 8 12:13:40 server1 kernel: cpu 0 hot: high 186, batch 31 used:27
Nov 8 12:13:40 server1 kernel: cpu 0 cold: high 62, batch 15 used:32
Nov 8 12:13:40 server1 kernel: cpu 1 hot: high 186, batch 31 used:20
Nov 8 12:13:40 server1 kernel: cpu 1 cold: high 62, batch 15 used:43
Nov 8 12:13:40 server1 kernel: cpu 2 hot: high 186, batch 31 used:24
Nov 8 12:13:40 server1 kernel: cpu 2 cold: high 62, batch 15 used:36
Nov 8 12:13:40 server1 kernel: cpu 3 hot: high 186, batch 31 used:28
Nov 8 12:13:40 server1 kernel: cpu 3 cold: high 62, batch 15 used:14
Nov 8 12:13:40 server1 kernel: HighMem per-cpu:
Nov 8 12:13:40 server1 kernel: cpu 0 hot: high 186, batch 31 used:21
Nov 8 12:13:40 server1 kernel: cpu 0 cold: high 62, batch 15 used:4
Nov 8 12:13:40 server1 kernel: cpu 1 hot: high 186, batch 31 used:29
Nov 8 12:13:40 server1 kernel: cpu 1 cold: high 62, batch 15 used:58
Nov 8 12:13:40 server1 kernel: cpu 2 hot: high 186, batch 31 used:12
Nov 8 12:13:40 server1 kernel: cpu 2 cold: high 62, batch 15 used:46
Nov 8 12:13:40 server1 kernel: cpu 3 hot: high 186, batch 31 used:27
Nov 8 12:13:40 server1 kernel: cpu 3 cold: high 62, batch 15 used:17
Nov 8 12:13:40 server1 kernel: Free pages: 118308kB (508kB HighMem)
Nov 8 12:13:40 server1 kernel: Active:421521 inactive:430319 dirty:0 writeback:0 unstable:0 free:29577 slab:11654 mapped-file:883 mapped-anon:856741 pagetables:5457
Nov 8 12:13:40 server1 kernel: DMA free:11680kB min:68kB low:84kB high:100kB active:0kB inactive:0kB present:16384kB pages_scanned:0 all_unreclaimable? yes
Nov 8 12:13:40 server1 kernel: lowmem_reserve[]: 0 0 880 4080
Nov 8 12:13:40 server1 kernel: DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no
Nov 8 12:13:40 server1 kernel: lowmem_reserve[]: 0 0 880 4080
Nov 8 12:13:40 server1 kernel: Normal free:106120kB min:3756kB low:4692kB high:5632kB active:437212kB inactive:262196kB present:901120kB pages_scanned:1567124 all_unreclaimable? yes
Nov 8 12:13:40 server1 kernel: lowmem_reserve[]: 0 0 0 25600
Nov 8 12:13:40 server1 kernel: HighMem free:508kB min:512kB low:3928kB high:7344kB active:1408712kB inactive:1299160kB present:3276800kB pages_scanned:9082467 all_unreclaimable? yes
Nov 8 12:13:40 server1 kernel: lowmem_reserve[]: 0 0 0 0
Nov 8 12:13:40 server1 kernel: DMA: 130*4kB 125*8kB 89*16kB 63*32kB 35*64kB 7*128kB 2*256kB 0*512kB 1*1024kB 1*2048kB 0*4096kB = 11680kB
What To Check When Server Hang
Sep 3, 2007One of my server hang w/o obvious reason. What is the checklist to adhere when troubleshooting? It is running on FreeBSD
View 5 Replies View RelatedDomain Name Server Freeze/Hang
May 9, 2009i have a strange issue on one of my servers where dns keeps freezing or hanging every now and then, if i restart the service on cpanel.
View 6 Replies View RelatedServer Hang - No Free Swap
Mar 24, 2008I encounter this problem in one of my server today..
Memory is 99% used
Swap is 100% used
top - 20:50:53 up 2 days, 7:05, 2 users, load average: 69.58, 41.63, 24.91
Tasks: 397 total, 57 running, 334 sleeping, 1 stopped, 5 zombie
Cpu(s): 1.9% us, 96.5% sy, 0.1% ni, 0.0% id, 0.0% wa, 0.5% hi, 1.0% si
Mem: 2076300k total, 2027140k used, 49160k free, 1116k buffers
Swap: 5245212k total, 5245212k used, 0k free, 13108k cached
Over my KVM, it just hang. When I try to type something, it shows this on the KVM screen:
[17379796.260000] HighMem 59*4kB 3*8kB 0*16kB 0*32kB 0*64kB 1*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 664kB
[17379796.260000] Swap cache: add 6615861, delete 6615849, find 2695269/27558673, race 0+86
[17379796.260000] Free swap = 0kB
[17379796.260000] Total swap = 5245212kB
Based on the message on screen, what is the message telling me?
[17379796.260000] HighMem 59*4kB 3*8kB 0*16kB 0*32kB 0*64kB 1*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 664kB
[17379796.260000] Swap cache: add 6615861, delete 6615849, find 2695269/27558673, race 0+86
My Server Overload
Oct 23, 2007currently i purchase a reseller. when i click in server status, i found out that the detail is as below:
cpsrvd up [green]
Server Load 5.41 (1 cpu) [red]
Memory Used 46.7 % [green]
Swap Used 9.51 % [green]
Disk /dev/sda1 (/boot) 13 % [green]
Disk /dev/sdb (/mount) 57 % [green]
Disk /dev/sda3 (/) 88 % [yellow]
i found that the server load is in red color, and the last item Disk/dev/sda3 is in yellow color. may i know what is the problem?
Vmware Overload Server
Jul 8, 2009Im using Vmware on dedicated server:
each 2 Intel(R) Xeon(TM) CPU 3.00GHz
1- in vmware show:
2 CPUs x 2 Cores
but i check in SSH we have 7 core !
Code:
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 6
model name : Intel(R) Xeon(TM) CPU 3.00GHz
stepping : 4
cpu MHz : 7680.000
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl vmx est cid cx16 xtpr lahf_lm
bogomips : 6012.44
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 6
model name : Intel(R) Xeon(TM) CPU 3.00GHz
stepping : 4
cpu MHz : 5120.000
cache size : 2048 KB
physical id : 1
siblings : 4
core id : 0
cpu cores : 2
apicid : 4
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl vmx est cid cx16 xtpr lahf_lm
bogomips : 5984.27
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
Server Overload Solution
Oct 26, 2009i want to kill apache/http and restart it again automatically. i need this because sometime we are not in front of the server to fix an overload issue immediately, which can affect a server very badly. i believe many of us already face this kind of situation and hope there is some kind of script or way to do this.
View 5 Replies View RelatedPrevention From Server Overload
Oct 27, 2008Today my server was down cause it was overloaded and when i restart my server its running how to stop such problem in the future
View 10 Replies View RelatedWhich PHP Scripts Lead To Server Overload
May 22, 2008I have heard a lot of cases when customers used forbidden PHP scripts on shared servers and as a result their accounts were suspended due to the server overload. I am just wondering what scripts it is desirable not to use within shared hosting packages?
View 6 Replies View RelatedWhat PHP Scripts Lead To Server Overload
May 22, 2008I have heard a lot of cases when customers used forbidden PHP scripts on shared servers and as a result their accounts were suspended due to the server overload. I am just wondering what scripts it is desirable not to use within shared hosting packages?
View 4 Replies View RelatedDebian Server Ubnormal CPU & Ram Overload
Oct 30, 2008Debian Server Ubnormal CPU
View 3 Replies View RelatedApache :: Way To Protect Server From Overload?
Feb 19, 2014Is there a way to protect apache server from overload? For example Nginx has a module called SysGuard when system load or memory use goes too high all subsequent requests will be redirected to the URL specified by the 'action' parameter.
View 1 Replies View RelatedServer Overload - Fixed By Extra RAM Or More Powerful CPU
Jul 3, 2008I have a fairly busy server, and received a High Load warning from my firewall monitoring software. Showing a high 5 minute load average alert of 13.89.
I'm presuming extra memory and a more powerful CPU would be required to sort this out?
Time: Thu Jul 3 12:22:06 2008
1 Min Load Avg: 42.90
5 Min Load Avg: 13.89
15 Min Load Avg: 5.82
Running/Total Processes: 51/359
Output from ps:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND ...
Server Overload :: Don't Ignore This Email ... Cpu Has Been Maxed Out For ...
Sep 29, 2008I have been receiving these a couple time a day lately and not sure what to do or how to go about checking what might be overloading the server. IF this looks familiar to anyone, I'd appreciate some helpful tips. I'm still a novice, but can muddle my way around the server if given enough guidance. Here is the email I've been getting:
"IMPORTANT: Do not ignore this email.
This is cPanel stats runner on host.myserverhost.com!
While processing the log files for user xxxxxxx, the cpu has been maxed out for more than a 6 hour period. The current load/uptime line on the server at the time of this email is
19:20:10 up 2 days, 7:06, 0 users, load average: 15.17, 13.24, 8.00
You should check the server to see why the load is so high and take steps to lower the load. If you want stats to continue to run even with a high load; Edit /var/cpanel/cpanel.config and change extracpus to a number larger then 0 (run /usr/local/cpanel/startup afterwards to pickup the changes)."
I guess my question is, how would I go about determining what is causing the excess load? Seems to happen even when not many folks are on my site.
Dedicated Server Overload ... Low Page Views
Jun 9, 2008I'm on a low-end dedicated server that I run 2 decent sized blogs on. I'm getting several traffic spikes a day where the load goes through the roof and I think I need my server optimized.
My server admin says I need a bigger server and he has never steered me wrong but this is ridiculous:
My blogs use Wordpress as its blogging platform....I know they hog server resources and I've recently installed Super cache so that seems to help.
I average about 5,000 pageviews a day and I would think even a low-end box should handle this but maybe I am wrong.
Here's the server specs:
Processor #1 Vendor: GenuineIntel
Processor #1 Name: Intel(R) Celeron(R) CPU 2.40GHz
Processor #1 speed: 2394.661 MHz
Processor #1 cache size: 128 KB
Memory: 1033924k/1048016k available (2171k kernel code, 13360k reserved, 723k data, 172k init, 130512k highmem)
hda: ST380011A, ATA DISK drive
hdc: Lite-On LTN486S 48x Max, ATAPI CD/DVD-ROM drive
hda: max request size: 1024KiB
hda: 156250000 sectors (80000 MB) w/2048KiB Cache, CHS=16383/255/63, UDMA(100)
hda: cache flushes supported
hdc: ATAPI 48X CD-ROM drive, 120kB Cache, UDMA(33)
Memory:
total used free shared buffers cached
Mem: 1035148 993356 41792 0 151312 527008
-/+ buffers/cache: 315036 720112
Swap: 2040212 476700 1563512
Total: 3075360 1470056 1605304
MySQL Overload Server, Wich User
Jul 5, 2007how check which database / user MySQL overload the server?
View 2 Replies View RelatedOpenVZ PAE Hang?
Aug 12, 2007I am trying to run the OpenVZ PAE kernel with 8 gigs of ram to back the server, however the server keeps suffering from hangings.
It starts 2 or 3 vpses fine, but once it hits 4 or so, it hangs without a kernel panic or any other proper error message.
The kernel version is 2.6.18-8.1.8.el5.028stab039.1PAE but it also does it on 2.6.18-ovz028stab039.1-enterprise
Anybody have the same problem and come up with a solution? Node is running CentOS 5.
Apache Used To Hang
Apr 4, 2008I have a dedicated server running CentOS which has been been running fine for a while now.
On the odd day Apache used to hang, I presume due to load so I installed SIM (System Integrity Manager) to check the status of httpd and to re-start when necessary.
Every now and again SIM would email saying that apache was re-started, no big deal.
Then this morning I got a email from SIM saying apache was down but couldn't be re-started. I then logged into the shell and tried to do a: service httpd restart
I then got a message saying something like: could not bind to port 80. I then tried to kill all httpd processes and re-start apache but the problem persisted. I then just rebooted my server and apache started fine.
Since then I have had hundreds of emails from SIM saying that it has had to re-start apache. Somehow it is detecting it as down and re-starting it. Apache seems to be up and fine. Re-installing SIM does not help.
The weird thing is when I logged in using Putty I got the "server's host key did not match the signature supplied" message like something had changed.
Rkhunter does not return anything just a couple of warnings.
Does anybody know what would cause sim to constantly detect Apache as down in this situation and also how this could happen with no changes being made?
Weird Periodic Hang
Jul 9, 2007For the last week, my vps (directadmin on centos on xen) has become unresponsive every three days at approximately 5 AM, and I'm baffled about why. It doesn't crash, but it stops accepting incoming connections until it's rebooted.
I'm not sure how to troubleshoot this. /var/log/messages gives no useful information. There are no unusual cronjobs running at that time.
Anyone heard of anything like this before or have any advice about how to troubleshoot?
Coldfusion 8 - MSSQL 5 Page Hang
Oct 26, 2009We had a Coldfusion site running MySQL without issues. We are in the process of doing some upgrades and as part of that we recently switched over to MSSQL 5. Ever since that happened, we will have random page hangs. This usually happens on pages with more complex queries, but it is very random. There is no timeout error on the server, no page cannot be displayed errors, no errors of any kind, the page will just hang. We have been monitoring our server resource monitor and we can see when the page 'gives up', we will go from 100% CPU down to almost 0, and then the page simply never recovers. Does anyone have any idea what might be going on? When there is no error message of sorts it makes it very problematic to troubleshoot.
View 3 Replies View RelatedE1000_clean_tx_irq: Detected Tx Unit Hang
Aug 11, 2007in one of my CentOS 64bit, there is errors with NICs
NETDEV WATCHDOG: eth0: transmit timed out
e1000: eth0: e1000_watchdog_task: NIC Link is Up 100 Mbps Full Duplex
e1000: eth0: e1000_watchdog_task: 10/100 speed: disabling TSO
e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
Tx Queue <0>
TDH <59>
TDT <5c>
next_to_use <5c>
next_to_clean <58>
buffer_info[next_to_clean]
time_stamp <1241628eb>
next_to_watch <59>
jiffies <124162eba>
next_to_watch.status <0>
e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
Tx Queue <0>
TDH <59>
TDT <5c>
next_to_use <5c>
next_to_clean <58>
buffer_info[next_to_clean]
time_stamp <1241628eb>
next_to_watch <59>
jiffies <12416368a>
next_to_watch.status <0>
Is there any idea for fixing? It's SM PDSMI+ board. Kernel 2.6.9-55.0.2.ELsmp #1 SMP Tue Jun 26 14:14:47 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
Grsec Kernel Either Panics Or Hang On Reboot
Mar 29, 2008I installed latest kernel ( 2.6.24.4 or 2.6.24.3 ) with grsec which either panics or hang on reboot before reaching boot prompt, just when /sbin/init runs. Experienced the same with grsec patched kernel 2.6.22.9 on several servers with the same hardware.
On server with AMD Operton, I was able to successfully compile 2.6.24.4 with grsec and boot into.
Server hardware details
--------------------------
[root@server kernels]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU 5148 @ 2.33GHz
stepping : 6
cpu MHz : 2333.469
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4670.51
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU 5148 @ 2.33GHz
stepping : 6
cpu MHz : 2333.469
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4667.16
[root@server kernels]#
[root@server ~]# uname -a
Linux server.name 2.6.19.2-grsec #1 SMP Tue Jan 15 07:08:50 CST 2008 i686 i686 i386 GNU/Linux
[root@server ~]#
[root@server kernels]# lspci
00:00.0 Host bridge: Intel Corporation 5000P Chipset Memory Controller Hub (rev b1)
00:02.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 2-3 (rev b1)
00:04.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 4-5 (rev b1)
00:06.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 6-7 (rev b1)
00:08.0 System peripheral: Intel Corporation 5000 Series Chipset DMA Engine (rev b1)
00:10.0 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev b1)
00:10.1 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev b1)
00:10.2 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev b1)
00:11.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers (rev b1)
00:13.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers (rev b1)
00:15.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev b1)
00:16.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev b1)
00:1c.0 PCI bridge: Intel Corporation 631xESB/632xESB/3100 Chipset PCI Express Root Port 1 (rev 09)
00:1d.0 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #1 (rev 09)
00:1d.1 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #2 (rev 09)
00:1d.2 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #3 (rev 09)
00:1d.3 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #4 (rev 09)
00:1d.7 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset EHCI USB2 Controller (rev 09)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9)
00:1f.0 ISA bridge: Intel Corporation 631xESB/632xESB/3100 Chipset LPC Interface Controller (rev 09)
00:1f.1 IDE interface: Intel Corporation 631xESB/632xESB IDE Controller (rev 09)
00:1f.2 IDE interface: Intel Corporation 631xESB/632xESB/3100 Chipset SATA IDE Controller (rev 09)
00:1f.3 SMBus: Intel Corporation 631xESB/632xESB/3100 Chipset SMBus Controller (rev 09)
01:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Upstream Port (rev 01)
01:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X Bridge (rev 01)
02:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E1 (rev 01)
02:02.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E3 (rev 01)
04:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01)
04:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01)
06:00.0 PCI bridge: Intel Corporation 80333 Segment-A PCI Express-to-PCI Express Bridge
06:00.2 PCI bridge: Intel Corporation 80333 Segment-B PCI Express-to-PCI Express Bridge
07:0e.0 RAID bus controller: Adaptec AAC-RAID
0a:00.0 PCI bridge: Intel Corporation 6702PXH PCI Express-to-PCI Bridge A (rev 09)
0c:01.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02)
[root@server kernels]#
[root@server ~]# lsmod
Module Size Used by
ip_conntrack_irc 11181 0
xt_conntrack 6876 0
xt_state 6544 16
ip_conntrack_ftp 11800 0
ipt_recent 13376 0
ipt_LOG 10781 0
xt_length 6312 0
xt_mac 6274 0
xt_multiport 7643 4
ipt_ttl 6266 0
xt_limit 6976 6
ipt_TOS 6555 14
ipt_ULOG 12126 0
ipt_TCPMSS 8276 1
ipt_owner 6335 0
ipt_ecn 6579 0
ip_conntrack 49498 4 ip_conntrack_irc,xt_conntrack,xt_state,ip_conntrack_ftp
ptpatch2008 7144 0
xt_tcpudp 7444 194
ipv6 248537 39
sunrpc 155556 1
iptable_filter 7336 1
iptable_mangle 7151 1
ip_tables 17800 2 iptable_filter,iptable_mangle
x_tables 19427 16 xt_conntrack,xt_state,ipt_recent,ipt_LOG,xt_length,xt_mac,xt_multiport,ipt_ttl,xt_limit,ipt_TOS,ipt_ULOG,ipt_TCPMSS,ipt_owner,ipt_ecn,xt_tcpudp,ip_tab les
dm_mirror 27216 0
dm_mod 60685 1 dm_mirror
button 11061 0
battery 14432 0
asus_acpi 20440 0
ac 9549 0
i2c_i801 12050 0
i2c_core 25366 1 i2c_i801
shpchp 40012 0
e1000 119987 0
floppy 61606 0
ext3 130212 6
jbd 61020 1 ext3
ata_piix 19728 0
libata 104369 1 ata_piix
aacraid 60341 7
usb_storage 66142 0
uhci_hcd 26859 0
ohci_hcd 23774 0
ehci_hcd 34026 0
sd_mod 24286 8
scsi_mod 136564 4 libata,aacraid,usb_storage,sd_mod
[root@server ~]# cat /etc/modprobe.conf
alias scsi_hostadapter usb-storage
alias eth0 e1000
alias eth1 e1000
alias scsi_hostadapter1 aacraid
alias scsi_hostadapter2 ata_piix
alias scsi_hostadapter3 usb-storage
alias usb-controller ehci-hcd
alias usb-controller1 uhci-hcd
[root@server ~]#
Apache :: Awkward Delay / Hang While Using Proxy
Apr 11, 2013I am using apache proxypass to proxy to 4 different ports (java/jsp applications) with the following configurations (for each):
<VirtualHost *:80>
ProxyPreserveHost On
ProxyRequests Off
ServerName *****.org
ProxyPass / http://*****.org:8080/ retry=0
ProxyPassReverse / http://*****.org:8080/
</VirtualHost>
Everything seems work fine until an awkward delay / connection timeout occurs. The web application hangs for about 5 to 15 seconds and starts working normally after that period. It's certainly not the application's issue because everything is fine when using IP address to access it.
When I enabled the debug log in apache, I found out that every time the server seems to hang, the following error appears in the apache error log and the number of apache child processes keep on increasing (ps aux | grep apache).
[Thu Apr 11 10:20:41 2013] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 4 in child 13208 for worker proxy:reverse
[Thu Apr 11 10:20:41 2013] [debug] proxy_util.c(1837): proxy: worker proxy:reverse already initialized
[Thu Apr 11 10:20:41 2013] [debug] proxy_util.c(1934): proxy: initialized single connection worker 4 in child 13208 for (*)
[Thu Apr 11 10:20:41 2013] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 3 in child 13208 for worker http://*****.org:8080/
.....
Also, the access log (access.log) completely stops during that hang period.
This debug message keeps on repeating as long as Apache/web-application is not responding. The application starts to work normally after that duration and the number of apache child process decrease to the normal number.
Apache version : 2.2.16 (Debian)
OS : Debian GNU/Linux 6.0
root@server:~# apache2 -V
Server version: Apache/2.2.16 (Debian)
Server built: Nov 30 2012 08:58:36
[Code]....
Vps Is OverLoad
Jul 18, 2007i have vps 512 MB ram From HostForWeb working Fine! in 160 websites! Hosted
But! in swvps.com with 2 gig ram! Low Working! OverLoad and CPU Usage is Red Alert
But HostForWeb VPS with 512 MB Ram good Working I Dont Know Why SWvps.com Is Low with 2 gig ram for me?
Overload Of Traffic
Jul 2, 2009I am not sure if my dedicated server is being attacked or if it is legitimate traffic. I need help figuring out the difference and if it is an attack, how to prevent it, and if it is legitimate traffic, how to configure the server to handle the load.
My server information is below:
HardwareIntel Xeon 3220-Quad Core [2.4GHz
8GB DDR2
SATAII 500GB
SoftwareCentOS 5.3-32
Apache2
MySQL 5
PHP 5
When I do ps aux|grep httpd|wc -l I get the count of current connected clients of 259 which is always maxing out my MaxClients of 256. I had increased it to 512, and it maxed out, I had increased it to 1024 and it maxed out, and lastly I had setup to 2048 and it works, but slows the entire server down.