BERTRAND Joël wrote:
BERTRAND Joël wrote:
David Miller wrote:
From: BERTRAND_Joël <joel.bertrand@xxxxxxxxxxx>
Date: Tue, 10 Jul 2007 09:53:12 +0200
When clamav-daemon (or all other daemons) remain in sleep mode,
I cannot quickly restart this daemon by /etc/init.d/$(daemon)
restart, I have to wait for a timeout.
Use the kernel sysrq keystrokes to get a task dump to see where
clamav-daemon is sleeping,
I will try tomorrow. I have to build a 2.6.22 (to see if nis works
because it doesn't with 2.6.22-rc7).
Tests made with a 2.6.22.1 (NIS works with 2.6.22.1 and not with
2.6.22-rc7, but I don't know why... ;-) )
my suspicion is that it is stuck
in the kernel futex code somewhere.
I think too.
When I write these lines, my mail server is blocked due to clamd
socket trouble :
Root rayleigh:[/etc/mail] > ps -eLf | grep clamd
clamav 3502 1 3502 1 2 10:53 ? 00:01:23 /usr/sbin/clamd
clamav 3502 1 7226 0 2 12:00 ? 00:00:00 /usr/sbin/clamd
root 8091 5893 8091 0 1 12:18 pts/0 00:00:00 grep clamd
clamd remains in S mode.
I have tried to obtain mode information with sysrq+w without any
success, sysrq+w returns no blocked task. In this example, clamd is
blocked, but some other tasks can be blocked.
David, I cannot obtain more information with sysrq, but I have found
another program that randomly stops : seamonkey (not really seamonkey,
iceape, its debian package). Iceape randomly stops in sleep state. I
have launched iceape in strace :
mprotect(0xf3ad6000, 8192, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3ad8000, 8192, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3ada000, 8192, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3adc000, 8192, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3ade000, 8192, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3ae0000, 16384, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3ae4000, 8192, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3ae6000, 8192, PROT_READ|PROT_WRITE) = 0
mprotect(0xf3ae8000, 8192, PROT_READ|PROT_WRITE) = 0
gettimeofday({1184179749, 741572}, NULL) = 0
gettimeofday({1184179749, 741853}, NULL) = 0
futex(0x278dac, FUTEX_WAKE, 1) = 1
access("/usr/lib/iceape/chrome/modern.jar", F_OK) = 0
gettimeofday({1184179749, 767087}, NULL) = 0
gettimeofday({1184179749, 767300}, NULL) = 0
gettimeofday({1184179749, 767530}, NULL) = 0
futex(0x278dac, FUTEX_WAKE, 1) = 1
futex(0x278da8, FUTEX_WAKE, 1) = 1
access("/usr/lib/iceape/chrome/modern.jar", F_OK) = 0
gettimeofday({1184179749, 771232}, NULL) = 0
gettimeofday({1184179749, 771447}, NULL) = 0
gettimeofday({1184179749, 771677}, NULL) = 0
futex(0x278dac, FUTEX_WAKE, 1) = 1
futex(0xf3a00010, FUTEX_WAIT, 2, NULL <unfinished ...>
rayleigh:[~] >
(aborted by CTRL+C)
If I restart iceape, it always stops with the same message type.
I don't understand why (with the same kernel and same glibc), my U2/SMP
works fine and not my U60/SMP.
Regards,
JKB
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