Messages in this thread | | | Date | Tue, 23 Feb 1999 10:15:17 +0200 | From | Petri Kaukasoina <> | Subject | Re: 2.0.36 kswapd gone insane? |
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On Mon, Feb 22, 1999 at 09:18:19PM -0700, Michael Loftis wrote: > The system is an i486/66 computer and based on the uptime the amount of > time kswapd has spent is impossible. Right about 4,637 minutes of uptime. > The system hasn't been under unusual stress. Earlier today the httpd got > swapped out and took an irate amount of time to swap in. No errors in > /var/log/messages Nothing on console, and dmesg leaves no clues except > for a kludge of lines: > > MASQ: failed TCP/UDP checksum from 216.119.135.31! > MASQ: failed TCP/UDP checksum from 216.119.135.31! > MASQ: failed TCP/UDP checksum from 216.119.135.31! > MASQ: failed TCP/UDP checksum from 216.119.135.31! > MASQ: failed TCP/UDP checksum from 216.119.135.31! > MASQ: failed TCP/UDP checksum from 216.119.135.31!
> [2107][root@disks:/home/winbox/ck]$ ps x > PID TTY STAT TIME COMMAND > 1 ? S 0:04 init > 2 ? SW 71224874:29 (kflushd) > 3 ? SW< 0:18 (kswapd) > 4 ? SW 0:00 (md_thread) > 5 ? SW 0:00 (md_thread) > 36 ? S 0:00 /sbin/kerneld > > ---SNIP--- > [2108][root@disks:/home/winbox/ck]$ uptime > 9:09pm up 3 days, 5:17, 4 users, load average: 0.10, 0.10, 0.09 > [2109][root@disks:/home/winbox/ck]$
I have seen this before and so have others. Some old messages from linux-kernel:
On Tue, Jan 21, 1997 at 03:34:56PM +0200, Petri Kaukasoina wrote: > Something strange just happened. Reading news became very very slow > and syslog received these: > > Jan 21 15:23:08 elektroni kernel: eth0: Infinite loop in interrupt, status 2011. > Jan 21 15:23:08 elektroni last message repeated 10 times > Jan 21 15:24:01 elektroni kernel: eth0: Infinite loop in interrupt, status 2011. > > After a minute or so everything seems ok again. > > But kflushed has gained a "little" cpu time: > > USER PID %CPU %MEM SIZE RSS TTY STAT START TIME COMMAND > root 2 0.0 0.0 0 0 ? SW Jan 14 71224874:23 (kflushd) > > Kernel 2.0.28, 486/66, IDE, ext2, VLB, 16 M RAM, 3c509b. IP-firewall. Xfree.
On Thu, Mar 05, 1998 at 12:48:36AM -0500, Jon Lewis wrote: > Speaking of kswapd...anyone ever seen kswapd eat LOTS of CPU time? > Today, or Squid server started acting funny (atually, it just stopped > processing requests even though it was running and eating fds) and the > only other odd thing I noticed was: > > root 3 0.0 0.0 0 0 ? SW<Mar 3 71224874:27 (kswapd) > > The system's only been up 1 day. Is the kernel (2.0.33) confused?
On Sun, Jun 28, 1998 at 04:54:02AM +1200, Spudgun wrote:
> spudgun@potato:~$ uname -a > Linux potato 2.0.34 #6 Sun Jun 21 19:36:44 NZST 1998 i486 unknown > > spudgun@potato:~$ uptime > 4:39am up 3 days, 3:23, 7 users, load average: 0.27, 0.72, 0.44 > > spudgun@potato::~$ ps aux > USER PID %CPU %MEM SIZE RSS TTY STAT START TIME COMMAND > nobody 803 0.0 5.7 5052 1792 1 S Jun 25 1:00 squid -D -sY > - --*snip*-- > root 1 0.0 0.2 848 68 ? S Jun 25 0:06 init [5] > root 2 0.0 0.0 0 0 ? SW Jun 25 71224874:50 (kflushd) > root 3 0.0 0.0 0 0 ? SW<Jun 25 0:13 (kswapd) > root 9 0.0 0.1 824 40 ? S Jun 25 0:14 /sbin/update > root 10 0.0 1.7 1304 536 ? S Jun 25 0:42 /sbin/kerneld > - --*snip*--
On Tue, Jun 30, 1998 at 01:29:38AM +0300, Meelis Roos wrote: > I searched the articles of linux-kernel since June 1996 for subjects containing > kswapd or kflushd and found nothing interesting. I have this little problem > too, either kflushd or kswapd (don't remember which) shows _very_ much > used time. 2.0.33pre-someting probably, or stock 2.0.33. Long uptime.
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