kernel-2.6.25.4-30.fc9.i686
firefox-3.0-0.60.beta5.fc9.i386
I've noticed "recently" that processes are getting stuck in D state
for awhile, then they recover. I caught firefox doing this, and here
is what strace said. strace showed the output stopping at the fsync
call for a few seconds at a time. While it was there, the entire
browser was hung--no window refreshes. The fsync happened a couple
times as seen below. After that, everything came back to life again.
All in all, the browser stayed in the frozen state for about 10 or 20
seconds.
I think I saw this problem happen with other applications too, like
gnome-terminal, but I didn't get a strace of them.
Process 4015 attached - interrupt to quit
_llseek(36, 4329472, [4329472], SEEK_SET) = 0
write(36,
"\r\0\0\0\6\0\347\0\f\240\tL\5\364\3,\0\347\2\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 4096
fsync(36) = 0
ftruncate64(50, 0) = 0
fstat64(36, {st_mode=S_IFREG|0640, st_size=4468736, ...}) = 0
_llseek(50, 0, [0], SEEK_SET) = 0
write(50, "\331\325\5\371
\241c\327\0\0\0\0\5\245\306\340\0\0\4C\0\0\20\0", 24) = 24
_llseek(50, 4095, [4095], SEEK_SET) = 0
write(50, "\0", 1) = 1
_llseek(50, 4096, [4096], SEEK_SET) = 0
write(50, "\0\0\4=", 4) = 4
_llseek(50, 4100, [4100], SEEK_SET) = 0
write(50,
"\n\0\0\0011\6x\0\6x\6\200\6\210\6\220\6\230\6\240\6\250\6\260\6\270\6\300\6\310\6\320"...,
4096) = 4096
_llseek(50, 8196, [8196], SEEK_SET) = 0
write(50, "\5\245\307S", 4) = 4
_llseek(50, 8200, [8200], SEEK_SET) = 0
write(50, "\0\0\4(", 4) = 4
_llseek(50, 8204, [8204], SEEK_SET) = 0
write(50,
"\r\0\0\0\17\0\345\0\17*\16M\r\342\rx\f\344\f*\n\234\t\373\tP\10\256\6\357\5/"...,
4096) = 4096
_llseek(50, 12300, [12300], SEEK_SET) = 0
write(50, "\5\245\314K", 4) = 4
fsync(50) = 0
_llseek(50, 8, [8], SEEK_SET) = 0
write(50, "\0\0\0\2", 4) = 4
fsync(50) = 0
_llseek(36, 4354048, [4354048], SEEK_SET) = 0
write(36,
"\r\0\0\0\17\0\345\0\17*\0\345\16\277\16U\r\301\r\7\vy\n\330\n-\t\213\7\314\6\f"...,
4096) = 4096
_llseek(36, 4440064, [4440064], SEEK_SET) = 0
write(36,
"\n\0\0\0011\6x\0\6x\6\200\6\210\6\220\6\230\6\240\6\250\6\260\6\270\6\300\6\310\6\320"...,
4096) = 4096
fsync(36) = 0
ftruncate64(50, 0) = 0
stat64("/var/tmp", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=4096, ...})
= 0
access("/var/tmp", R_OK|W_OK|X_OK) = 0
access("/var/tmp/etilqs_XBiTSw6BgOqWg2N", F_OK) = -1 ENOENT (No such
file or directory)
fstat64(36, {st_mode=S_IFREG|0640, st_size=4468736, ...}) = 0
gettimeofday({1213652378, 669828}, NULL) = 0
lseek(55, 323328, SEEK_SET) = 323328
write(55,
"\0\1\0\v\0\0\0\0\0\0\0\1HV\335\26HV\335\212Hw\332\351\0\0\4~\0\0\0\'"...,
216) = 216
gettimeofday({1213652378, 670081}, NULL) = 0
gettimeofday({1213652378, 670156}, NULL) = 0
poll([{fd=10, events=POLLIN}, {fd=3, events=POLLIN, revents=POLLIN},
{fd=15, events=POLLIN|POLLPRI}, {fd=19, events=POLLIN|POLLPRI},
{fd=20, events=POLLIN|POLLPRI}, {fd=21, events=POLLIN|POLLPRI},
{fd=18, events=POLLIN|POLLPRI}, {fd=65, events=POLLIN}, {fd=23,
events=POLLIN, revents=POLLIN}], 9, 0) = 2
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