I''m running the latest git kernel and git btrfs-progs.
When I try to run some benchmarks on my btrfs partition I always get
read errors:
phenom2 ~ # iozone -I -a -s 100M -r 4k -i 0 -i 1 -i 2
Iozone: Performance Test of File I/O
Version $Revision: 3.321 $
Compiled for 64 bit mode.
Build: linux-AMD64
Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins
Al Slater, Scott Rhine, Mike Wisner, Ken Goss
Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,
Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,
Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy,
Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root.
Run began: Thu Jun 18 10:18:06 2009
O_DIRECT feature enabled
Auto Mode
File size set to 102400 KB
Record Size 4 KB
Command line used: iozone -I -a -s 100M -r 4k -i 0 -i 1 -i 2
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random random
bkwd record stride
KB reclen write rewrite read reread read write
read rewrite read fwrite frewrite fread freread
102400 4 7540 5981
Error reading block 0 ef000000
read: Invalid argument
phenom2 /tmp # sysbench --file-extra-flags=direct --num-threads=16
--test=fileio --file-total-size=100M --file-test-mode=rndrd prepare
sysbench 0.4.10: multi-threaded system evaluation benchmark
128 files, 800Kb each, 100Mb total
Creating files for the test...
phenom2 /tmp # sysbench --file-extra-flags=direct --num-threads=16
--test=fileio --file-total-size=100M --file-test-mode=rndrd run
sysbench 0.4.10: multi-threaded system evaluation benchmark
Running the test with following options:
Number of threads: 16
Extra file open flags: 16384
128 files, 800Kb each
100Mb total file size
Block size 16Kb
Number of random requests for random IO: 10000
Read/Write ratio for combined random IO test: 1.50
Periodic FSYNC enabled, calling fsync() each 100 requests.
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random read test
Threads started!
FATAL: Failed to read file! file: 3 pos: 196608 errno = 22 ()
FATAL: Failed to read file! file: 13 pos: 524288 errno = 22 ()
FATAL: Failed to read file! file: 48 pos: 180224 errno = 22 ()
FATAL: Failed to read file! file: 96 pos: 262144 errno = 22 ()
FATAL: Failed to read file! file: 26 pos: 311296 errno = 22 ()
FATAL: Failed to read file! file: 26 pos: 507904 errno = 22 ()
FATAL: Failed to read file! file: 127 pos: 589824 errno = 22 ()
FATAL: Failed to read file! file: 3 pos: 0 errno = 22 ()
FATAL: Failed to read file! file: 119 pos: 262144 errno = 22 ()
FATAL: Failed to read file! file: 9 pos: 688128 errno = 22 ()
FATAL: Failed to read file! file: 62 pos: 557056 errno = 22 ()
FATAL: Failed to read file! file: 87 pos: 655360 errno = 22 ()
FATAL: Failed to read file! file: 113 pos: 425984 errno = 22 ()
FATAL: Failed to read file! file: 20 pos: 344064 errno = 22 ()
FATAL: Failed to read file! file: 17 pos: 294912 errno = 22 ()
FATAL: Failed to read file! file: 16 pos: 0 errno = 22 ()
Done.
--
Markus
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Markus Trippelsdorf wrote:> I''m running the latest git kernel and git btrfs-progs. > When I try to run some benchmarks on my btrfs partition I always get > read errors:(...)> FATAL: Failed to read file! file: 3 pos: 196608 errno = 22 () > FATAL: Failed to read file! file: 13 pos: 524288 errno = 22 ()Anything interesting in dmesg? -- Tomasz Chmielewski http://wpkg.org -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Jun 18, 2009 at 11:00:56AM +0200, Tomasz Chmielewski wrote:> Markus Trippelsdorf wrote: > > I''m running the latest git kernel and git btrfs-progs. > > When I try to run some benchmarks on my btrfs partition I always get > > read errors: > > (...) > > > > FATAL: Failed to read file! file: 3 pos: 196608 errno = 22 () > > FATAL: Failed to read file! file: 13 pos: 524288 errno = 22 () > > Anything interesting in dmesg?No. Nothing. -- Markus -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
2009/6/18 Markus Trippelsdorf <markus@trippelsdorf.de>:> I''m running the latest git kernel and git btrfs-progs. > When I try to run some benchmarks on my btrfs partition I always get > read errors: > > phenom2 ~ # iozone -I -a -s 100M -r 4k -i 0 -i 1 -i 2 > Iozone: Performance Test of File I/O > Version $Revision: 3.321 $ > Compiled for 64 bit mode. > Build: linux-AMD64 > > Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins > Al Slater, Scott Rhine, Mike Wisner, Ken Goss > Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, > Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, > Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, > Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root. > > Run began: Thu Jun 18 10:18:06 2009 > > O_DIRECT feature enabled > Auto Mode > File size set to 102400 KB > Record Size 4 KB > Command line used: iozone -I -a -s 100M -r 4k -i 0 -i 1 -i 2 > Output is in Kbytes/sec > Time Resolution = 0.000001 seconds. > Processor cache size set to 1024 Kbytes. > Processor cache line size set to 32 bytes. > File stride size set to 17 * record size. > random random bkwd record stride > KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread > 102400 4 7540 5981 > Error reading block 0 ef000000 > read: Invalid argument > > phenom2 /tmp # sysbench --file-extra-flags=direct --num-threads=16 --test=fileio --file-total-size=100M --file-test-mode=rndrd prepare sysbench 0.4.10: multi-threaded system evaluation benchmark > > 128 files, 800Kb each, 100Mb total > Creating files for the test... > phenom2 /tmp # sysbench --file-extra-flags=direct --num-threads=16 --test=fileio --file-total-size=100M --file-test-mode=rndrd run > sysbench 0.4.10: multi-threaded system evaluation benchmark > > Running the test with following options: > Number of threads: 16 > > Extra file open flags: 16384 > 128 files, 800Kb each > 100Mb total file size > Block size 16Kb > Number of random requests for random IO: 10000 > Read/Write ratio for combined random IO test: 1.50 > Periodic FSYNC enabled, calling fsync() each 100 requests. > Calling fsync() at the end of test, Enabled. > Using synchronous I/O mode > Doing random read test > Threads started! > FATAL: Failed to read file! file: 3 pos: 196608 errno = 22 () > FATAL: Failed to read file! file: 13 pos: 524288 errno = 22 () > FATAL: Failed to read file! file: 48 pos: 180224 errno = 22 () > FATAL: Failed to read file! file: 96 pos: 262144 errno = 22 () > FATAL: Failed to read file! file: 26 pos: 311296 errno = 22 () > FATAL: Failed to read file! file: 26 pos: 507904 errno = 22 () > FATAL: Failed to read file! file: 127 pos: 589824 errno = 22 () > FATAL: Failed to read file! file: 3 pos: 0 errno = 22 () > FATAL: Failed to read file! file: 119 pos: 262144 errno = 22 () > FATAL: Failed to read file! file: 9 pos: 688128 errno = 22 () > FATAL: Failed to read file! file: 62 pos: 557056 errno = 22 () > FATAL: Failed to read file! file: 87 pos: 655360 errno = 22 () > FATAL: Failed to read file! file: 113 pos: 425984 errno = 22 () > FATAL: Failed to read file! file: 20 pos: 344064 errno = 22 () > FATAL: Failed to read file! file: 17 pos: 294912 errno = 22 () > FATAL: Failed to read file! file: 16 pos: 0 errno = 22 () > Done. >Currently, btrfs doesn''t support using direct I/O for read. Yan -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
> Currently, btrfs doesn''t support using direct I/O for read.Is anyone working on this? It /is/ a rather basic feature, and testing with iozone would be nice. roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Roy Sigurd Karlsbakk wrote:>> Currently, btrfs doesn''t support using direct I/O for read. > > Is anyone working on this? It /is/ a rather basic feature, and testing > with iozone would be nice.Yes, I am working on it. I will be away for the next 10 days but hope to have something for read tests soon after. jim -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html