Re: [PATCH] O17int

[Måns Rullgård]

Another XEmacs strangeness:

When compiling from xemacs, everything is fine until the compilation
is done.  Then xemacs starts spinning wildly in some loop doing this:

select(1024, [], NULL, NULL, {0, 0})    = 0 (Timeout)
write(5, "F\v\5\0004\0\0\0017\0\0\1\4\0\223\0008\0\r\0F0\5\0004\0"..., 40) = 40
write(5, "F\v\5\0004\0\0\0017\0\0\1\4\0\223\0008\0\r\0F0\5\0004\0"..., 40) = 40
select(1024, [], NULL, NULL, {0, 0})    = 0 (Timeout)
ioctl(5, 0x541b, [0])                   = 0
ioctl(5, 0x541b, [0])                   = 0
gettimeofday({1061288133, 302532}, NULL) = 0
select(20, [3 5 6 7 9 10 12 13 19], [], [], {0, 0}) = 1 (in [13], left {0, 0})
gettimeofday({1061288133, 302779}, NULL) = 0
select(1024, [13], NULL, NULL, {0, 0})  = 1 (in [13], left {0, 0})
read(13, 0x8dc4b08, 512)                = -1 EIO (Input/output error)
rt_sigprocmask(SIG_BLOCK, [CHLD], NULL, 8) = 0
wait4(1703, 0xbfffe80c, WNOHANG, NULL)  = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], NULL, 8) = 0
wait4(1162, 0xbfffe80c, WNOHANG, NULL)  = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], NULL, 8) = 0
wait4(1160, 0xbfffe80c, WNOHANG, NULL)  = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], NULL, 8) = 0
wait4(1003, 0xbfffe80c, WNOHANG, NULL)  = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
select(1024, [], NULL, NULL, {0, 0})    = 0 (Timeout)
write(5, "F\v\5\0004\0\0\0017\0\0\1\4\0\223\0008\0\r\0F0\5\0004\0"..., 40) = 40
write(5, "F\v\5\0004\0\0\0017\0\0\1\4\0\223\0008\0\r\0F0\5\0004\0"..., 40) = 40
select(1024, [], NULL, NULL, {0, 0})    = 0 (Timeout)
ioctl(5, 0x541b, [0])                   = 0
ioctl(5, 0x541b, [0])                   = 0
gettimeofday({1061288133, 304385}, NULL) = 0
select(20, [3 5 6 7 9 10 12 13 19], [], [], {0, 0}) = 1 (in [13], left {0, 0})
gettimeofday({1061288133, 304605}, NULL) = 0
select(1024, [13], NULL, NULL, {0, 0})  = 1 (in [13], left {0, 0})
read(13, 0x8dc4b08, 512)                = -1 EIO (Input/output error)
rt_sigprocmask(SIG_BLOCK, [CHLD], NULL, 8) = 0
wait4(1703, 0xbfffe80c, WNOHANG, NULL)  = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], NULL, 8) = 0
wait4(1162, 0xbfffe80c, WNOHANG, NULL)  = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], NULL, 8) = 0
wait4(1160, 0xbfffe80c, WNOHANG, NULL)  = 0

This goes on for anything from half a second to several seconds.
During that time other processes, except X, are starved.

I saw this first with 2.6.0-test1 vanilla, then it went away in -test2
and -test3, only to show up again with O16.3int.  My O16.2 kernel
seems ok, which seems strange to me since the difference from O16.2 to
O16.3 is very small.

Any ideas?

-- 
Måns Rullgård
mru@xxxxxxxxxxxx

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