| Summary: | konqueror autosave spins up disk even when idle | ||
|---|---|---|---|
| Product: | [Applications] konqueror | Reporter: | Vincent de Phily <moltonel> |
| Component: | general | Assignee: | Konqueror Developers <konq-bugs> |
| Status: | RESOLVED FIXED | ||
| Severity: | wishlist | CC: | andreas_nordal_4, gaaf |
| Priority: | NOR | ||
| Version: | 4.6.0 | ||
| Target Milestone: | --- | ||
| Platform: | Gentoo Packages | ||
| OS: | Linux | ||
| Latest Commit: | http://commits.kde.org/kde-baseapps/96deec69aeba370311236d3ecb7918b68fb77c2c | Version Fixed In: | 4.10.5 |
| Sentry Crash Report: | |||
This is killing to SSD's. Every konqueror instance will write to the autosave directory every second, even when nothing has changed in the browser. These writes should be skipped if nothing has changed and should be directed to the tmp (or cache if it must be semi-persistent) directory. Agreed that those writes wear SSDs pointlessly (although you need much more than that to kill them). But for the record, I was more concerned about battery usage (obviously ?) and general system responsiveness (I have a slow HD and my workload is sensitive to IO latency). I'm seeing an average 1770 B/s of disk writes caused by Konqueror 4.8.5 on OpenSuse 12.2. There is a patch on the reviewboard which should reduce pointless disk activity: https://git.reviewboard.kde.org/r/111048/ Fixed by Dawit Alemayehu. http://commits.kde.org/kde-baseapps/96deec69aeba370311236d3ecb7918b68fb77c2c |
Version: 4.6.0 (using KDE 4.6.0) OS: Linux Even on a blank page, konqueror will spin up the disk regularly to read a write a bit of data. Looking at it via strace, it seems to be caused by the autosave feature. Reproducible: Always Steps to Reproduce: * Start konqueror in a blank page * watch disk activity in ksysguard * strace -p <konq_pid> Actual Results: read(7, 0x12660acc24, 4096) = -1 EAGAIN (Resource temporarily unavailable) unlink("/home/work/.kde4/share/apps/konqueror/autosave/_1.51") = 0 stat("/home/work/.kde4/share/config/", {st_mode=S_IFDIR|0700, st_size=12288, ...}) = 0 access("/etc/kde4rc", R_OK) = -1 ENOENT (No such file or directory) lstat("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 lstat("/home/work", {st_mode=S_IFDIR|0755, st_size=626688, ...}) = 0 lstat("/home/work/.kde4", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror/autosave", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x3d9dac4e2a0) = -1 ENOENT (No such file or directory) stat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x126707f5c8) = -1 ENOENT (No such file or directory) lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x3d9dac4f090) = -1 ENOENT (No such file or directory) stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2945, ...}) = 0 access("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", W_OK) = -1 ENOENT (No such file or directory) access("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", F_OK) = -1 ENOENT (No such file or directory) access("/home/work/.kde4/share/apps/konqueror/autosave", W_OK) = 0 stat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x1267d41708) = -1 ENOENT (No such file or directory) lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x3d9dac4ed80) = -1 ENOENT (No such file or directory) poll([{fd=7, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=7, revents=POLLOUT}]) writev(7, [{"\24\0\6\0\24\0\340\3E\1\0\0E\1\0\0\0\0\0\0\1\0\0\0", 24}, {NULL, 0}, {"", 0}], 3) = 24 poll([{fd=7, events=POLLIN}], 1, -1) = 1 ([{fd=7, revents=POLLIN}]) read(7, "\1 \253\v\1\0\0\0E\1\0\0\4\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 36 read(7, 0x12660acc24, 4096) = -1 EAGAIN (Resource temporarily unavailable) read(7, 0x12660acc24, 4096) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=7, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=7, revents=POLLOUT}]) writev(7, [{"\24\0\6\0\24\0\340\3g\1\0\0\4\0\0\0\0\0\0\0\0\10\0\0", 24}, {NULL, 0}, {"", 0}], 3) = 24 poll([{fd=7, events=POLLIN}], 1, -1) = 1 ([{fd=7, revents=POLLIN}]) read(7, "\1 \254\v\1\0\0\0\4\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 36 read(7, 0x12660acc24, 4096) = -1 EAGAIN (Resource temporarily unavailable) read(7, 0x12660acc24, 4096) = -1 EAGAIN (Resource temporarily unavailable) stat("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 stat("/home/work", {st_mode=S_IFDIR|0755, st_size=626688, ...}) = 0 stat("/home/work/.kde4", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 stat("/home/work/.kde4/share", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 stat("/home/work/.kde4/share/apps", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 stat("/home/work/.kde4/share/apps/konqueror", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 stat("/home/work/.kde4/share/apps/konqueror/autosave", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock", 0x3d9dac4f160) = -1 ENOENT (No such file or directory) stat("/tmp/kde-work/", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 stat("/home/work/.kde4/share/apps/konqueror/autosave", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 open("/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock.th6001", O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC, 0600) = 10 fcntl(10, F_SETFD, FD_CLOEXEC) = 0 fchmod(10, 0644) = 0 uname({sys="Linux", node="moltowork", ...}) = 0 fstat(10, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0 write(10, "6001\n", 5) = 5 write(10, "konqueror\n", 10) = 10 write(10, "moltowork\n", 10) = 10 link("/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock.th6001", "/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock") = 0 lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock.th6001", {st_mode=S_IFREG|0644, st_size=25, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock", {st_mode=S_IFREG|0644, st_size=25, ...}) = 0 lseek(10, 0, SEEK_SET) = 0 close(10) = 0 unlink("/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock.th6001") = 0 stat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x12670a8a58) = -1 ENOENT (No such file or directory) lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x3d9dac4ebd0) = -1 ENOENT (No such file or directory) stat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x1266f88188) = -1 ENOENT (No such file or directory) lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x3d9dac4efa0) = -1 ENOENT (No such file or directory) lstat("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 lstat("/home/work", {st_mode=S_IFDIR|0755, st_size=626688, ...}) = 0 lstat("/home/work/.kde4", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror/autosave", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x3d9dac4df80) = -1 ENOENT (No such file or directory) access("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", W_OK) = -1 ENOENT (No such file or directory) access("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", F_OK) = -1 ENOENT (No such file or directory) access("/home/work/.kde4/share/apps/konqueror/autosave", W_OK) = 0 stat("/home/work/.kde4/share/apps/konqueror/autosave", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 open("/home/work/.kde4/share/apps/konqueror/autosave/_1.51XQ6001.new", O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC, 0600) = 10 fcntl(10, F_SETFD, FD_CLOEXEC) = 0 stat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x1266cc55e8) = -1 ENOENT (No such file or directory) lstat("/home/work/.kde4/share/apps/konqueror/autosave/_1.51", 0x3d9dac4ee80) = -1 ENOENT (No such file or directory) fchmod(10, 0644) = 0 open("/home/work/.kde4/share/apps/konqueror/autosave/_1.51XQ6001.new", O_RDWR|O_CREAT|O_CLOEXEC, 0666) = 11 fcntl(11, F_SETFD, FD_CLOEXEC) = 0 lseek(10, 0, SEEK_SET) = 0 close(10) = 0 fchmod(11, 0600) = 0 fstat(11, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0 write(11, "[General]\nNumber of Windows=1\n\n["..., 16364) = 16364 write(11, "file:///usr/share/doc/erlang-13."..., 15539) = 15539 write(11, "\\x00\\x00\\x00.http://code.google."..., 6930) = 6930 fstat(11, {st_mode=S_IFREG|0600, st_size=38833, ...}) = 0 close(11) = 0 rename("/home/work/.kde4/share/apps/konqueror/autosave/_1.51XQ6001.new", "/home/work/.kde4/share/apps/konqueror/autosave/_1.51") = 0 unlink("/home/work/.kde4/share/apps/konqueror/autosave/_1.51.lock") = 0 stat("/home/work/.kde4/share/apps/konqueror/autosave/owned_by_1.51", 0x12670a8a58) = -1 ENOENT (No such file or directory) lstat("/home/work/.kde4/share/apps/konqueror/autosave/owned_by_1.51", 0x3d9dac4f390) = -1 ENOENT (No such file or directory) read(7, 0x12660acc24, 4096) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=3, events=POLLIN}, {fd=8, events=POLLIN}, {fd=9, events=POLLIN}, {fd=7, events=POLLIN}], 4, 9999 (repeated at short and regular intervals) Expected Results: * No autosave activity (and therefore no disk spinup) unless I have actually done something (opening a new tab, a website, changing some layout...) in the browser since the last autosave. * When an autosave does occur, perhaps make it more efficient ? A lot of those syscalls seem redundant (I may be wrong on that one).