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Bug #369

closed

lighttpd hanging under high fastcgi load...

Added by Anonymous over 19 years ago. Updated over 18 years ago.

Status:
Fixed
Priority:
Urgent
Category:
mod_fastcgi
Target version:
-
ASK QUESTIONS IN Forums:

Description

Lighttpd begins to consume 100% of the CPU and never processes any requests. It looks like lighttpd has a problem when it can't connect to the fastcgi socket. Thoughts/patches? grin -sc


 30065 lighttpd CALL  fcntl(0x192,0x2,0x1)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  fcntl(0x192,0x4,0x6)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  connect(0x192,0x7fffffffe690,0x19)
 30065 lighttpd NAMI  "/tmp/php-devel.socket-0" 
 30065 lighttpd RET   connect -1 errno 61 Connection refused
 30065 lighttpd CALL  write(0x5,0x82c980,0x6f)
 30065 lighttpd GIO   fd 5 wrote 111 bytes
       "2005-11-12 19:43:43: (mod_fastcgi.c.1531) connect failed: 402 Connection refused 61 0 /tmp/php-devel.socke\
        t-0 
       " 
 30065 lighttpd RET   write 111/0x6f
 30065 lighttpd CALL  wait4(0x7572,0x7fffffffe5d4,0x1,0)
 30065 lighttpd RET   wait4 0
 30065 lighttpd CALL  close(0x192)
 30065 lighttpd RET   close 0

 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   open 402/0x192
 30065 lighttpd CALL  close(0x192)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  socket(0x1,0x1,0)
 30065 lighttpd RET   socket 402/0x192
 30065 lighttpd CALL  fcntl(0x192,0x2,0x1)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  fcntl(0x192,0x4,0x6)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  connect(0x192,0x7fffffffe690,0x19)
 30065 lighttpd NAMI  "/tmp/php-devel.socket-0" 
 30065 lighttpd RET   connect -1 errno 61 Connection refused
 30065 lighttpd CALL  write(0x5,0x82c980,0x6f)
 30065 lighttpd GIO   fd 5 wrote 111 bytes
       "2005-11-12 19:43:43: (mod_fastcgi.c.1531) connect failed: 402 Connection refused 61 0 /tmp/php-devel.socke\
        t-0 
       " 
 30065 lighttpd RET   write 111/0x6f
 30065 lighttpd CALL  wait4(0x7572,0x7fffffffe5d4,0x1,0)
 30065 lighttpd RET   wait4 0
 30065 lighttpd CALL  close(0x192)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  accept(0x4,0x7fffffffec90,0x7fffffffec8c)
 30065 lighttpd RET   accept 402/0x192
 30065 lighttpd CALL  fcntl(0x192,0x2,0x1)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  fcntl(0x192,0x4,0x6)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  ioctl(0x192,FIONREAD,0x7fffffffe80c)
 30065 lighttpd RET   ioctl 0
 30065 lighttpd CALL  read(0x192,0x82e000,0x103f)
 30065 lighttpd GIO   fd 402 read 112 bytes
       "GET /ads/advert/index.php HTTP/1.0\r
        User-Agent: ApacheBench/1.3d\r
        Host: www.host.com:81\r
        Accept: */*\r
        \r
       " 
 30065 lighttpd RET   read 112/0x70
 30065 lighttpd CALL  stat(0x82dc00,0x7fffffffe6d0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   stat 0
 30065 lighttpd CALL  open(0x82dc00,0,0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   open 403/0x193
 30065 lighttpd CALL  close(0x193)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  stat(0x82dc00,0x7fffffffe610)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   stat 0
 30065 lighttpd CALL  open(0x82dc00,0,0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   open 403/0x193
 30065 lighttpd CALL  close(0x193)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  stat(0x82dc00,0x7fffffffe630)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   stat 0
 30065 lighttpd CALL  open(0x82dc00,0,0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   open 403/0x193
 30065 lighttpd CALL  close(0x193)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  socket(0x1,0x1,0)
 30065 lighttpd RET   socket 403/0x193
 30065 lighttpd CALL  fcntl(0x193,0x2,0x1)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  fcntl(0x193,0x4,0x6)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  wait4(0x7572,0x7fffffffe5d4,0x1,0)
 30065 lighttpd RET   wait4 0
 30065 lighttpd CALL  close(0x193)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  accept(0x4,0x7fffffffec90,0x7fffffffec8c)
 30065 lighttpd RET   accept 403/0x193
 30065 lighttpd CALL  fcntl(0x193,0x2,0x1)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  fcntl(0x193,0x4,0x6)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  break(0x832000)
 30065 lighttpd RET   break 0
 30065 lighttpd CALL  ioctl(0x193,FIONREAD,0x7fffffffe80c)
 30065 lighttpd RET   ioctl 0
 30065 lighttpd CALL  read(0x193,0x830000,0x103f)
 30065 lighttpd GIO   fd 403 read 112 bytes
       "GET /ads/advert/index.php HTTP/1.0\r
        User-Agent: ApacheBench/1.3d\r
        Host: www.host.com:81\r
        Accept: */*\r
        \r
       " 
 30065 lighttpd RET   read 112/0x70
 30065 lighttpd CALL  stat(0x82f280,0x7fffffffe6d0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   stat 0
 30065 lighttpd CALL  open(0x82f280,0,0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   open 404/0x194
 30065 lighttpd CALL  close(0x194)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  stat(0x82f280,0x7fffffffe610)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   stat 0
 30065 lighttpd CALL  open(0x82f280,0,0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   open 404/0x194
 30065 lighttpd CALL  close(0x194)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  stat(0x82f280,0x7fffffffe630)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   stat 0
 30065 lighttpd CALL  open(0x82f280,0,0)
 30065 lighttpd NAMI  "/www/devel/devel.host.com/public/ads/advert/index.php" 
 30065 lighttpd RET   open 404/0x194
 30065 lighttpd CALL  close(0x194)
 30065 lighttpd RET   close 0
 30065 lighttpd CALL  socket(0x1,0x1,0)
 30065 lighttpd RET   socket 404/0x194
 30065 lighttpd CALL  fcntl(0x194,0x2,0x1)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  fcntl(0x194,0x4,0x6)
 30065 lighttpd RET   fcntl 0
 30065 lighttpd CALL  wait4(0x7572,0x7fffffffe5d4,0x1,0)
 30065 lighttpd RET   wait4 0
 30065 lighttpd CALL  close(0x194)
 30065 lighttpd RET   close 0

-- sean

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 #1

Updated by Anonymous over 19 years ago

Yes, something similar happened when I tried uploading and importing a .sql file (or by pasting it into a form field). The fcgi process that was handling it (a php process) hung, but further requests were not serviced until that specific fcgi process was killed (or lighttpd was restarted). Doh.

-- slakr

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 #2

Updated by Anonymous over 19 years ago

I'm getting the same problem. slakr, is it possible to identify hung php fcgi processes? A quick cronjob to kill 09 them could possibly be a good workaround.

-- dave

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 #3

Updated by Anonymous over 19 years ago

A suggestion by someone in #lighttpd: REDUCE the number of fcgi procs and fcgi children. I have it set to 2 max procs and 4 max fcgi children and have had no crashes/load spikes yet.

-- dave

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 #4

Updated by Anonymous over 19 years ago

Some testing reveals that the bug seems to be to do with how many fcgi processes per fcgi section, rather than just the total number running.

-- dave

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 #5

Updated by jan about 19 years ago

  • Status changed from New to Fixed
  • Resolution set to fixed

THis is fixed in the pre-release of 1.4.9 again. It was a problem for 1.4.8.

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