search for: ksoftirqd_cpu0

...firewall experts ... :) We are using a Leaf box (1GHz 256MB RAM) for a network with normal traffic of about 6Mbps but peaks of up to 40Mbps. The chipset of the ethernets is a Realtek. We are experiencing some high latency high CPU usage issues (the CPU is at 90%) and we discovered the process ksoftirqd_CPU0 could consume up to 50% of that. We are using a 2.4.26 kernel and have NOT compiled any optimization regarding network besides those available on Leaf. This problems have appeared since they stared to use the firewall (sohrewall based) so we think has to do something with it or iptables or tr...

Hello, we are using HTB for dividing 15 Mb/s upload rate to 1022 classes (rate 14 kb/s, ceil 15 Mb/s), but sometimes ksoftirqd_CPU0 uses the most of the CPU-time (over 90% CPU load is casual in such situation). This situation occurs several times a week and takes minutes or one hour and during that time it has enormous packet loss. Reboot of the machine usually solves this problem. Because big differencess between rate --...

...ps aux | head -15 USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.0 1368 72 ? S Aug27 0:05 init [3] root 2 0.0 0.0 0 0 ? SW Aug27 0:00 [keventd] root 3 0.0 0.0 0 0 ? SWN Aug27 0:00 [ksoftirqd_CPU0] root 4 0.0 0.0 0 0 ? SW Aug27 0:03 [kswapd] root 5 0.0 0.0 0 0 ? SW Aug27 0:00 [kreclaimd] root 6 0.0 0.0 0 0 ? DW Aug27 0:00 [bdflush] root 7 0.0 0.0 0 0 ? DW Aug27 0:00 [kupdated] root...

Hello All, Wondering what sort of real world mileage people are getting out of different internet connecions - i.e. different DSL connection speeds, cable modems, etc... Is it reasonable to hope to carry 10 - 15 concurrent calls on a 768K DSL? I'm not talking about theoretical BW or looking for any difinitive absolute guarantee... With DSL and Cable - there is no guarantee, so I'm

...) ~ # ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.1 1272 476 ? S 2004 0:06 init [3] root 2 0.0 0.0 0 0 ? SW 2004 0:00 [keventd] root 3 0.0 0.0 0 0 ? SWN 2004 0:00 [ksoftirqd_CPU0] root 4 0.0 0.0 0 0 ? SW 2004 0:00 [kswapd] root 5 0.0 0.0 0 0 ? SW 2004 0:00 [bdflush] root 6 0.0 0.0 0 0 ? SW 2004 0:00 [kupdated] root 7 0.0 0.0 0 0 ? SW 2004 0:00 [kjournald] root...

...7616K cached PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 1 root 0 0 524 524 460 S 0.0 0.1 0:08 init 2 root 9 0 0 0 0 SW 0.0 0.0 0:00 keventd 3 root 18 19 0 0 0 SWN 0.0 0.0 0:00 ksoftirqd_CPU0 4 root 9 0 0 0 0 SW 0.0 0.0 0:00 kswapd 5 root 9 0 0 0 0 SW 0.0 0.0 0:00 kreclaimd 6 root 9 0 0 0 0 SW 0.0 0.0 0:00 bdflush 7 root 9 0 0 0 0 SW 0.0 0.0 0:00 kupdated 8 root...

...-- PCI-X PCI Both routers use HSRP from Cisco to share information about who is alive. This app uses multicast UDP packets to 224.0.0.1 address, port 1985. The problem is, after a while (1 or 2 minutes) the CPU reaches 100% (0.99 load 99% System) with the process ksoftirqd_CPU0 reaching 99%. Using iptraf we discover ethernets 4 to 7 (the ones that share the PCI bus) are at full speed. The traffic is on port 1985 and comes from the 2 virtual IP from the redundant routers. It seems they enter an infinite loop and completely kill the system. BTW, the only used ethernets are...

...schedule_timeout SW 2 ? 00:00:00 keventd context_thread SW 3 ? 00:00:00 keventd context_thread SW 4 ? 00:00:00 keventd context_thread SW 5 ? 00:00:00 keventd context_thread SWN 6 ? 00:00:03 ksoftirqd_CPU0 ksoftirqd SWN 7 ? 00:00:02 ksoftirqd_CPU1 ksoftirqd SWN 8 ? 00:00:03 ksoftirqd_CPU2 ksoftirqd SWN 9 ? 00:00:02 ksoftirqd_CPU3 ksoftirqd SW 10 ? 01:50:36 kswapd schedule_timeout SW 11 ? 00:00:27 kreclaimd kreclaimd...

.../limits.conf so if Samba is consuming all resources, I don't know how. I set a process to capture the output of "ps" every 5 seconds and the last output it gave before the box locked up was this (relevant portions only): root 4 0.0 0.0 0 0 ? SWN Jun02 0:00 [ksoftirqd_CPU0] root 9 0.0 0.0 0 0 ? SW Jun02 0:00 [bdflush] root 5 0.1 0.0 0 0 ? RW Jun02 0:19 [kswapd] xfs 4913 0.0 0.0 4524 3080 ? S Jun02 0:00 [xfs] root 5636 0.0 0.0 9652 2444 ? S 00:18 0:00 /usr/sbin/smbd -D smb...

.../limits.conf so if Samba is consuming all resources, I don't know how. I set a process to capture the output of "ps" every 5 seconds and the last output it gave before the box locked up was this (relevant portions only): root 4 0.0 0.0 0 0 ? SWN Jun02 0:00 [ksoftirqd_CPU0] root 9 0.0 0.0 0 0 ? SW Jun02 0:00 [bdflush] root 5 0.1 0.0 0 0 ? RW Jun02 0:19 [kswapd] xfs 4913 0.0 0.0 4524 3080 ? S Jun02 0:00 [xfs] root 5636 0.0 0.0 9652 2444 ? S 00:18 0:00 /usr/sbin/smbd -D smb...

.../limits.conf so if Samba is consuming all resources, I don't know how. I set a process to capture the output of "ps" every 5 seconds and the last output it gave before the box locked up was this (relevant portions only): root 4 0.0 0.0 0 0 ? SWN Jun02 0:00 [ksoftirqd_CPU0] root 9 0.0 0.0 0 0 ? SW Jun02 0:00 [bdflush] root 5 0.1 0.0 0 0 ? RW Jun02 0:19 [kswapd] xfs 4913 0.0 0.0 4524 3080 ? S Jun02 0:00 [xfs] root 5636 0.0 0.0 9652 2444 ? S 00:18 0:00 /usr/sbin/smbd -D smb...

...al 2.6 GHz Xeon, 2 Gb RAM, 2 T400P, asterisk/zaptel is built with SMP support). On the similar load test (as with the BOX1) BOX2 was showing 0% idle CPU 70% of the time. Just 3 T1s out of 8. On the load test with just 2 T1s BOX3 was very close to 0% idle on CPU0, CPU1 was at 95% idle. The process ksoftirqd_CPU0 was close to the top of the 'top', with /proc/interrupts showing tor2 related numbers growing very fast. We had 2 T1s plugged into the first T400P board, with nothing going into the second, but the number of interrupts for the both boards was growing at the same pace. Here are the interrupt...

...TIME CPU COMMAND 3474 root 16 0 1008 272 192 S 99.9 0.0 1989m 0 smbd 1 root 15 0 104 76 56 S 0.0 0.0 0:04 0 init 2 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 keventd 3 root 34 19 0 0 0 SWN 0.0 0.0 0:02 0 ksoftirqd_CPU0 8 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 bdflush 4 root 15 0 0 0 0 SW 0.0 0.0 0:04 0 kswapd 5 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kscand/DMA 6 root 15 0 0 0 0 SW 0.0 0.0 3:57 0 kscand/No...

...0:00 0 apmd 1152 root 24 0 124 4 0 S 0.0 0.0 0:00 0 xinetd 2 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 keventd 3 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kapmd 4 root 34 19 0 0 0 SWN 0.0 0.0 0:01 0 ksoftirqd_CPU0 9 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 bdflush 5 root 15 0 0 0 0 SW 0.0 0.0 0:01 0 kswapd 6 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kscand/DMA 7 root 15 0 0 0 0 SW 0.0 0.0 0:02 0 kscand/No...

...1 mii 2336 0 [eepro100] # ls -al /dev/tun crw------- 1 root root 10, 200 Feb 15 23:14 /dev/tun # tincd -n silmuvpn -d5 # ps ax PID TTY STAT TIME COMMAND 1 ? S 0:03 init [2] 2 ? SW 0:00 [keventd] 3 ? SWN 0:00 [ksoftirqd_CPU0] 4 ? SW 0:04 [kswapd] 5 ? SW 0:00 [bdflush] 6 ? SW 0:00 [kupdated] 264 ? S 0:00 /sbin/syslogd 267 ? S 0:02 /sbin/klogd 270 ? S 0:00 /usr/sbin/dhcpd3 -q br0 eth2 281 ? S 0:00 /usr/sbin/inetd 288 ?...

...sk:~# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.6 1492 84 ? S Feb02 0:00 init [2] root 2 0.0 0.0 0 0 ? SW Feb02 0:00 [keventd] root 3 0.0 0.0 0 0 ? SWN Feb02 0:00 [ksoftirqd_CPU0] root 4 0.0 0.0 0 0 ? SW Feb02 0:14 [kswapd] root 5 0.0 0.0 0 0 ? SW Feb02 0:00 [bdflush] root 6 0.0 0.0 0 0 ? SW Feb02 0:00 [kupdated] root 85 0.0 0.0 0 0 ? DW Feb02 0:01 [kjournald] root...

...976 S 0.1 0.0 0:00 httpd 6919 nobody 9 0 1116 1100 964 S 0.1 0.0 0:00 httpd 1 root 10 0 472 428 412 S 0.0 0.0 14:45 init 2 root 9 0 0 0 0 SW 0.0 0.0 50:40 keventd 3 root 19 19 0 0 0 SWN 0.0 0.0 0:00 ksoftirqd_CPU0 4 root 19 19 0 0 0 SWN 0.0 0.0 0:00 ksoftirqd_CPU1 5 root 19 19 0 0 0 SWN 0.0 0.0 0:00 ksoftirqd_CPU2 6 root 19 19 0 0 0 SWN 0.0 0.0 0:00 ksoftirqd_CPU3 7 root 9 0 0 0 0 SW 0.0 0.0 305:31 kswapd...

...AT START TIME COMMAND root 1 0.0 0.1 1380 496 ? S 00:42 0:35 init root 2 0.0 0.0 0 0 ? SW 00:42 0:00 [keventd] root 3 0.0 0.0 0 0 ? SW 00:42 0:00 [kapmd] root 4 0.0 0.0 0 0 ? SWN 00:42 0:00 [ksoftirqd_CPU0] root 9 0.0 0.0 0 0 ? SW 00:42 0:00 [bdflush] root 5 0.0 0.0 0 0 ? SW 00:42 0:00 [kswapd] root 6 0.0 0.0 0 0 ? SW 00:42 0:00 [kscand/DMA] root 7 0.0 0.0 0 0 ? SW 00:42 0:20 [kscand/Normal...

...185 root S 296 1 0.0 0.9 dropbear 200 root S 296 1 0.0 0.9 httpd 87 root S 288 1 0.0 0.9 klogd 77 root S 288 1 0.0 0.9 init 4 root SW 0 1 0.0 0.0 kswapd 3 root SWN 0 1 0.0 0.0 ksoftirqd_CPU0 158 root SW 0 1 0.0 0.0 usb-storage-0 95 root SW 0 1 0.0 0.0 khubd 5 root SW 0 1 0.0 0.0 bdflush 2 root SW 0 1 0.0 0.0 keventd 160 root SW 0 1 0.0 0.0 scsi_eh_0 37 root SWN 0...

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=40 laforge@netfilter.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED ------- Additional Comments From laforge@netfilter.org 2003-02-03 16:49 ------- We haven't seen this