We are using 2.4.17 kernel for our Production machines running JRun/Java
applications + Apache. We are encountering a lot of CLOSE_WAITs like the
following before our JRun applications die (port 53001 is the Jrun
port):
tcp 1 0 127.0.0.1:47185 127.0.0.1:53001
CLOSE_WAIT 32649/httpd
tcp 1 0 127.0.0.1:47119 127.0.0.1:53001
CLOSE_WAIT 32641/httpd
tcp 1 0 127.0.0.1:47283 127.0.0.1:53001
CLOSE_WAIT 32634/httpd
tcp 7661 0 127.0.0.1:48012 127.0.0.1:53001
CLOSE_WAIT 1051/httpd
tcp 1 0 127.0.0.1:48166 127.0.0.1:53001
CLOSE_WAIT 32663/httpd
tcp 1 0 127.0.0.1:46625 127.0.0.1:53001
CLOSE_WAIT 32640/httpd
tcp 1 0 127.0.0.1:46727 127.0.0.1:53001
CLOSE_WAIT 32667/httpd
tcp 1 0 127.0.0.1:51625 127.0.0.1:53001
CLOSE_WAIT 632/httpd
tcp 1 0 127.0.0.1:51623 127.0.0.1:53001
CLOSE_WAIT 32654/httpd
tcp 1 0 127.0.0.1:51374 127.0.0.1:53001
CLOSE_WAIT 1023/httpd
tcp 1 0 127.0.0.1:52010 127.0.0.1:53001
CLOSE_WAIT 32669/httpd
tcp 1 0 127.0.0.1:52168 127.0.0.1:53001
CLOSE_WAIT 32661/httpd
tcp 1 0 127.0.0.1:51774 127.0.0.1:53001
CLOSE_WAIT 32642/httpd
tcp 4125 0 127.0.0.1:52635 127.0.0.1:53001
CLOSE_WAIT 632/httpd
tcp 1 0 127.0.0.1:52651 127.0.0.1:53001
CLOSE_WAIT 404/httpd
tcp 1 0 127.0.0.1:52676 127.0.0.1:53001 CLOS
E_WAIT 32672/httpd
tcp 1 0 127.0.0.1:53046 127.0.0.1:53001
CLOSE_WAIT 410/httpd
tcp 1 0 127.0.0.1:52831 127.0.0.1:53001
CLOSE_WAIT 32643/httpd
tcp 1 0 127.0.0.1:52818 127.0.0.1:53001
CLOSE_WAIT 32660/httpd
tcp 1 0 127.0.0.1:49602 127.0.0.1:53001
CLOSE_WAIT 635/httpd
tcp 1 0 127.0.0.1:50028 127.0.0.1:53001
CLOSE_WAIT 631/httpd
tcp 1 0 127.0.0.1:50161 127.0.0.1:53001
CLOSE_WAIT 627/httpd
tcp 1 0 127.0.0.1:49896 127.0.0.1:53001
CLOSE_WAIT 633/httpd
tcp 1 0 127.0.0.1:50498 127.0.0.1:53001
CLOSE_WAIT 629/httpd
tcp 1 0 127.0.0.1:50496 127.0.0.1:53001
CLOSE_WAIT 32658/httpd
tcp 1 0 127.0.0.1:50947 127.0.0.1:53001
CLOSE_WAIT 372/httpd
tcp 1 0 127.0.0.1:50754 127.0.0.1:53001
CLOSE_WAIT 626/httpd
tcp 1 0 127.0.0.1:55640 127.0.0.1:53001
CLOSE_WAIT 32666/httpd
tcp 4718 0 127.0.0.1:55638 127.0.0.1:53001
CLOSE_WAIT 626/httpd
tcp 1 0 127.0.0.1:55791 127.0.0.1:53001
CLOSE_WAIT 4237/httpd
tcp 1 0 127.0.0.1:56074 127.0.0.1:53001
CLOSE_WAIT 3300/httpd
tcp 1 0 127.0.0.1:56100 127.0.0.1:53001
CLOSE_WAIT 32657/httpd
tcp 1 0 127.0.0.1:55893 127.0.0.1:53001
CLOSE_WAIT 32632/httpd
tcp 1 0 127.0.0.1:56621 127.0.0.1:53001
CLOSE_WAIT 403/httpd
tcp 1 0 127.0.0.1:56758 127.0.0.1:53001
CLOSE_WAIT 628/httpd
tcp 8596 0 127.0.0.1:56826 127.0.0.1:53001
CLOSE_WAIT 635/httpd
tcp 1 0 127.0.0.1:56438 127.0.0.1:53001
CLOSE_WAIT 32665/httpd
tcp 1 0 127.0.0.1:57266 127.0.0.1:53001
CLOSE_WAIT 4242/httpd
tcp 4718 0 127.0.0.1:56904 127.0.0.1:53001
CLOSE_WAIT 32659/httpd
tcp 1 0 127.0.0.1:56980 127.0.0.1:53001
CLOSE_WAIT 32671/httpd
tcp 1 0 127.0.0.1:57003 127.0.0.1:53001
CLOSE_WAIT 32664/httpd
tcp 18867 0 127.0.0.1:57052 127.0.0.1:53001
CLOSE_WAIT 32648/httpd
tcp 1 0 127.0.0.1:53407 127.0.0.1:53001
CLOSE_WAIT 32638/httpd
tcp 1 0 127.0.0.1:53402 127.0.0.1:53001
CLOSE_WAIT 32659/httpd
tcp 1 0 127.0.0.1:53439 127.0.0.1:53001
CLOSE_WAIT 32668/httpd
tcp 1 0 127.0.0.1:54162 127.0.0.1:53001
CLOSE_WAIT 32650/httpd
tcp 49403 0 127.0.0.1:54172 127.0.0.1:53001
CLOSE_WAIT 32666/httpd
tcp 1 0 127.0.0.1:53783 127.0.0.1:53001
CLOSE_WAIT 32662/httpd
tcp 1 0 127.0.0.1:54408 127.0.0.1:53001
CLOSE_WAIT 634/httpd
tcp 1 0 127.0.0.1:54451 127.0.0.1:53001
CLOSE_WAIT 32633/httpd
tcp 21285 0 127.0.0.1:55113 127.0.0.1:53001
CLOSE_WAIT 4241/httpd
tcp 1 0 127.0.0.1:57400 127.0.0.1:53001
CLOSE_WAIT 4236/httpd
tcp 1 0 127.0.0.1:57463 127.0.0.1:53001
CLOSE_WAIT 32644/httpd
tcp 1 0 127.0.0.1:57456 127.0.0.1:53001
CLOSE_WAIT 32670/httpd
tcp 1 0 127.0.0.1:57584 127.0.0.1:53001
CLOSE_WAIT 4233/httpd
CLOSE_WAIT_for_OTHERS
12
tcp 1 14600 192.168.66.178:80 203.123.134.34:21244
CLOSE_WAIT 4241/httpd
tcp 1 12847 192.168.66.178:80 205.188.199.187:5396
CLOSE_WAIT 32666/httpd
tcp 1 13600 192.168.66.178:80 205.188.193.33:29005
CLOSE_WAIT 4238/httpd
tcp 1 13006 192.168.66.178:80 205.188.199.187:10542
CLOSE_WAIT 635/httpd
tcp 1 12771 192.168.66.178:80 205.188.192.184:23366
CLOSE_WAIT 5330/httpd
tcp 1 12447 192.168.66.178:80 205.188.199.187:10090
CLOSE_WAIT 4243/httpd
tcp 1 12770 192.168.66.178:80 205.188.192.184:25710
CLOSE_WAIT 628/httpd
tcp 1 10720 192.168.66.178:80 193.110.211.66:12136
CLOSE_WAIT 632/httpd
tcp 1 14600 192.168.66.178:80 203.127.108.3:51958
CLOSE_WAIT 5331/httpd
tcp 1 14600 192.168.66.178:80 203.127.108.3:40387
CLOSE_WAIT 32648/httpd
tcp 1 14437 192.168.66.178:80 210.49.245.134:15251
CLOSE_WAIT 626/httpd
tcp 1 13590 192.168.66.178:80 210.180.96.11:6364
CLOSE_WAIT 5377/httpd
---------------------------------
The developers have hinted that it could be a problem of the kernel,
refering me to the link below:
http://www.cs.helsinki.fi/linux/linux-kernel/2001-23/0424.html
It seems that the link referred to kernels 2.2.19 and 2.4.5 . Would
anyone be able to verify/confirm that this "BUG"(?) has already been
fixed on 2.4.17 and up? I followed the thread on the mailing list and
it looked like the messages stopped on this reponse from Andi Kleen.
Any info to shed light on this would be very much appreciated.
Regards,
Beng
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