https://bugzilla.novell.com/show_bug.cgi?id=478477 Stefan Quandt changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Writing with kget (KDE4) on |Writing with kget on a CIFS |a NAS |mounted drive results in | |noisy disk access pattern -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=478477 User squan@web.de added comment https://bugzilla.novell.com/show_bug.cgi?id=478477#c2 --- Comment #2 from Stefan Quandt 2009-02-24 14:53:01 MST --- To check wether it is a proble in a software layer between kernel and application (kget) I used konqueror as client for copying a large file onto said NAS. Result: Smooth and almost silent write access. Next I checked with the KDE3 version of kget. Result: Frightening drive noise. Next I checked with an older combination of CIFS/kget on from a SUSE-11.0 machine. Result: Same noise. Next I attached kget with strace. Result of roughly 30s: - about 4000 writev() calls on file descriptor 8 - about 15000 read() calls on the same fd - about two thirds of the read attempt have the result EAGAIN (Resource temporarily unavailable) So I think for this one the kget developers have to be addressed. Since the problem is already present in KDE3 I wonder wether I am the first one directly writing on a samba share with kget. Here a short excerpt of the strace log: clock_gettime(CLOCK_MONOTONIC, {703, 8962380}) = 0 read(8, "\7\3,\240 \272\n\0t\0\0\0+\0\300\6\0\0\0\0\250\1\315\0\213\1\33\0\20 \0\3"..., 4096) = 64 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) select(9, [8], [8], NULL, NULL) = 1 (out [8]) writev(8, [{"&\3\2\0t\0\0\0", 8}], 1) = 8 select(9, [8], [], NULL, NULL) = 1 (in [8]) read(8, "\1\1-\240\0\0\0\0t\0\0\0\321\316`\1\250\1\315\0\250\1\315\0\20 \0\0\320\254.\n", 4096) = 32 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) select(9, [8], [8], NULL, NULL) = 1 (out [8]) writev(8, [{"(\3\4\0t\0\0\0+\0\300\6\250\1\315\0", 16}], 1) = 16 select(9, [8], [], NULL, NULL) = 1 (in [8]) read(8, "\1\1.\240\0\0\0\0\0\0\0\0\213\1\33\0\2\0\0\0\20\0\0\0\320\254.\n\0\0\0\0", 4096) = 32 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) select(9, [8], [8], NULL, NULL) = 1 (out [8]) writev(8, [{"\2\3\4\0+\0\300\6\0@\0\0\7\0\300\6(\3\4\0t\0\0\0+\0\300\6\250\1\315\0", 32}], 1) = 32 select(9, [8], [], NULL, NULL) = 1 (in [8]) read(8, "\1\0010\240\0\0\0\0\0\0\0\0\213\1\33\0\2\0\0\0\20\0\0\0\320\254.\n\0\0\0\0", 4096) = 32 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) clock_gettime(CLOCK_MONOTONIC, {703, 10478221}) = 0 select(9, [8], [8], NULL, NULL) = 1 (out [8]) writev(8, [{"(\3\4\0t\0\0\0+\0\300\6\252\1`\2", 16}], 1) = 16 select(9, [8], [], NULL, NULL) = 1 (in [8]) read(8, "\1\0011\240\0\0\0\0\0\0\0\0\215\1\256\1\2\0\0\0\20\0\0\0\320\254.\n\0\0\0\0", 4096) = 32 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) clock_gettime(CLOCK_MONOTONIC, {703, 10938337}) = 0 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=3, events=POLLIN}, {fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=5, events=POLLIN}, {fd=12, events=POLLIN}, {fd=15, events=POLLIN}, {fd=22, events=POLLIN}], 7, 0) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {703, 11102045}) = 0 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) clock_gettime(CLOCK_MONOTONIC, {703, 12145478}) = 0 select(9, [8], [8], NULL, NULL) = 1 (out [8]) writev(8, [{"7\3\4\0\36\21\300\6A\v\300\6\0\0\0\0007\3\4\0\37\21\300\6A\v\300\6\0\0\0\0"..., 3060}], 1) = 3060 read(8, 0x80d49b4, 4096) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=3, events=POLLIN}, {fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=5, events=POLLIN}, {fd=12, events=POLLIN}, {fd=15, events=POLLIN}, {fd=22, events=POLLIN}], 7, 408) = 1 ([{fd=8, revents=POLLIN}]) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=478477 User llunak@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=478477#c4 Lubos Lunak changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P5 - None |P4 - Low Status|ASSIGNED |RESOLVED Resolution| |UPSTREAM --- Comment #4 from Lubos Lunak 2009-03-18 09:28:32 MST --- Please report your kget problem directly upstream at http://bugs.kde.org . -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.