NTFS write speed really slow 15MB/s on Ubuntu - Super User.

Big_writes This option prevents fuse from splitting write buffers into 4K chunks, enabling big write buffers to be transferred from the application in a single step.Then the max_write= FUSE option with big_writes made the difference. It improved the otherwise still unoptimized ntfs-3g performance from 687 - 889 MB/s.Kernel 2.6.28-10 compile with the two options - VM_MAX_READAHEAD 4096 - FUSE_MAX_PAGES_PER_REQ 256 - fuse 2.8.0 pre2 - MIN_BUFSIZE 0x401000 I mount the directory with fuse option big_writes,direct_io The Results This is the results I got for the moment transferring over Samba - one big file copy to the server 70 Mo/s in normal, 55.I changed my mount option as defaults was removed from 2.26 on and this seems to work. Type = fuse.mergerfs Options = rw,sync_read,use_ino,allow_other,atomic_o_trunc,auto_cache,big_writes,default_permissions. Fx pdf print. FUSE does not support mmap in the Linux kernel that my distribution uses. Recompiled ZFS, this time enabling a FUSE mount option named big_writes that.Dear Miklos and Fuse users, I am trying to improve write performance in my FUSE FS. I see that all write calls use size of 4K. I use -o big_writes but I can see that it causes no change.Fuse8 System Manager's Manual fuse8 NAME top fuse - configuration and mount options for FUSE file systems DESCRIPTION top FUSE Filesystem in Userspace is a simple interface for userspace programs to export a virtual filesystem to the Linux kernel.

Filesystem in Userspace / List fuse-devel Archives

Fuse.main(self) File "build/bdist.macosx-10.10-x86_64/egg/fuse.py", line 754, in main NOTE: There is an incombatibility between Linux and Mac OS X fuse.Mounting failed What version of fuse and the kernel are you using? I've specified the blocksize for file system I/O (st_blksize) as 1MB but stat still shows 4k: % stat tmp/foo File: `tmp/foo' Size: 16777216 Blocks: 32768 IO Block: 4096 regular file Device: 16h/22d Inode: 2 Links: 0 Access: (0644/-rw-r--r--) Uid: ( 1000/ mrvn) Gid: ( 1000/ mrvn) Access: 2009-05-30 .000000000 0200 Modify: 2009-05-30 .000000000 0200 Change: 2009-05-30 .000000000 0200 My filesystem uses a 1MB blocksize and I would like to reflect that. - My fuse-python binding, with the modification that instead of directly calling fuse_setup() and then fuse_loop(), we invoke fuse_main().It looks to me like this option is part of fuse 2.8.0 pre X only, and a relatively recent kernel. I experienced that the logging thread is awaken each time the fs server gets a message. Handel 24 english songs. FUSE Filesystem in Userspace is a simple interface for userspace. These are FUSE specific mount options that can be specified for all.However, FUSE file system has performance overhead due to the data copy between. using the FUSE options such as big_writes and direct_io, respectively.Re Fuse-2.8 big_write option -- 128kb write syscall. howto set higher value On Thu. François Thiebolt wrote Ok, you need to modifiy both the kernel, the fuse kernel module within kernel tree along with the Fuse library.

Investigate best FUSE+sshfs options to use for performance and correctness of. It looks as though at least direct_io and big_writes may be beneficial, so that.The Filesystem in Userspace FUSE is a widely used tool that allows. better performance from the FUSE file system, we enable big_write, max_read. mount options as mentioned earlier, which enables the prefetching.FUSE Filesystem in Userspace is a simple interface for userspace programs to. Some options regarding mount policy can be set in the file /etc/ Die besten binäre optionen broker werden. But it's soo much time while a posting appears on gmane :/ Anyways, On 2009-05-27, Nikolaus Rath functions receive and have to return?In the C code: --------------------------------------------------- static int utimens_func(const char *path, const struct timespec ts[2]) --------------------------------------------------- in the Python code: --------------------------------------------------- class Timespec(Fuse Struct): """ Cf.Struct timespec in time.h: def __init__(self, **kw): self.tv_sec = None self.tv_nsec = None Fuse Struct.__init__(self, **kw) [...] def lowwrap(self, fname): [...] elif fname == 'utimens': def wrap(path, acc_sec, acc_nsec, mod_sec, mod_nsec): ts_acc = Timespec(tv_sec = acc_sec, tv_nsec = acc_nsec) ts_mod = Timespec(tv_sec = mod_sec, tv_nsec = mod_nsec) return fun(path, ts_acc, ts_mod) --------------------------------------------------- ie.Your callback gets the path, and two Timespec instances, for access and modification times, which feature the tv_sec and tv_nsec attributes.

Mergerfs 2.25 seems to not work with rclone - bug - rclone forum

You don't have to return anything (unless you want an errory return), just perform a side effect.For getattr, you get the path, and have to return an object which has the necessary stat fields (and may have some optional ones) as attributes.C code: --------------------------------------------------- #define FETCH_STAT_DATA() \ fetchattr(st, st_mode); \ fetchattr(st, st_ino); \ fetchattr(st, st_dev); \ fetchattr(st, st_nlink); \ fetchattr(st, st_uid); \ fetchattr(st, st_gid); \ fetchattr(st, st_size); \ fetchattr(st, st_atime); \ fetchattr(st, st_mtime); \ fetchattr(st, st_ctime); \ \ /* \ * Following fields are not necessarily available on all \ * platforms (were "all" stands for "POSIX-like"). Therefore \ * we should have some #ifdef-s around...However, they _are_ \ * available on those platforms where FUSE has a chance to \ * run now and in the foreseeable future, and we don't use \ * autotools so we just dare to throw these in as is. -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C Many thanks.\ */ \ \ fetchattr_soft(st, st_rdev); \ fetchattr_soft_d(st, st_blksize, 4096); \ fetchattr_soft_d(st, st_blocks, (st-st_size 511)/512) --------------------------------------------------- fetchattr'd attributes are the obligate ones, fechattr_softed ones are optional. Or you just have overlooked the "lowwrap" stuff (which is there to make the interface a bit more humane friendly...)? Best, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C So it's a Debuntu issue, ping Seb! I did fix the bug this way at one stage as well, but I wasn't convinced that having an operation abort wouldn't cause problems elsewhere (though I couldn't see anything obvious).

Fuse unknown option `big_writes' #113. Closed tlvince opened this issue Dec 10, 2014 0 comments Closed fuse unknown option `big_writes' #113.Connecting Clients to your LizardFS installation. On most systems adding big_writes to the options will significantly increase your throughput since it will force the fuse library to use writes 4k. will mount with fuse option big_writes and default system mount options nosuid, nodev and noatime.Many options are available for the oiofs-fuse command. -o atomic_o_trunc enable atomic open+truncate support -o big_writes enable larger than 4kB writes -o. Forex o dibond zuschnitt. [[Thanks, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C INSTANCE i-c996d6a0 ami-bf5eb9d6 ec2-174-129-141-219.compute-1.dom U-12-31-39-03-BC-D7.compute-1.internal running gsg-keypair 0 m1.small 2009-05-27T 0000 us-east-1b aki-a71cf9ce ari-a51cf9cc Linux vostro 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 UTC 2009 i686 GNU/Linux Yeah, I was able to reproduce with the Jaunty Live CD.I bisected the issue and found out that it occurs due to the bug fixed here: ...Which has been committed just after the 0.2-pre3 release; cf. I'm not even sure where to start looking for the problem.

ZFS on Linux my story and HOWTO you can have it too.

Debuntu uses 0.2-pre3 for some mystical reason (as 0.2 is out there since a long while...). Sometimes the strangest looking problems have the easiest solutions.It turns out that - my own file system exits with sys.exit() at the end (thus killing the other threads) while doesn't have an explicit exit and waits for the last thread.- handles requests to fast for the background thread to activate while handling. Most wanted trading forex robot. A simple sleep(1) in the request handler makes the background threads come alive. However, I am still surprised by the implementation of single threading.I would have expected that this affects only the number of threads that collect requests from the fuse kernel module.Is there a specific reason why all other program threads are stopped and started with the one request handling thread? Best, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C MIN_BUFSIZE 0x401000 I mount the directory with fuse : option big_writes,direct_io The Results : This is the results I got for the moment transferring over Samba: - one big file copy to the server : 70 Mo/s in normal, 55 Mo/s via Fuse - one big file copy from the server : 98 Mo/s in normal, 97 Mo/s via Fuse - a directory copy (little files) to the server : 5 Mo/s in normal, 3 Mo/s via Fuse - a directory copy (little files) from the server : 3.5 Mo/s in normal, 3 Mo/s via Fuse The normal result are obtained using the option "use sendfile = yes" in samba whereas fuse use the same option as no.

Please let me know know if the lost of performances is normal Regards Samuel with the Ubuntu Jaunty image: Btw, I guess you should also be able to reproduce it by booting from the Ubuntu Jaunty Live CD (but I did not test that).Best, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C MIN_BUFSIZE 0x401000 I mount the directory with fuse : option big_writes,direct_io The Results : This is the results I got for the moment transferring over Samba: - one big file copy to the server : 70 Mo/s in normal, 55 Mo/s via Fuse - one big file copy from the server : 98 Mo/s in normal, 97 Mo/s via Fuse - a directory copy (little files) to the server : 5 Mo/s in normal, 3 Mo/s via Fuse - a directory copy (little files) from the server : 3.5 Mo/s in normal, 3 Mo/s via Fuse The normal result are obtained using the option "use sendfile = yes" in samba whereas fuse use the same option as no.Please let me know know if the lost of performances is normal Regards Samuel MIN_BUFSIZE 0x401000 I mount the directory with fuse : option big_writes,direct_io The Results : This is the results I got for the moment transferring over Samba: - one big file copy to the server : 70 Mo/s in normal, 55 Mo/s via Fuse - one big file copy from the server : 98 Mo/s in normal, 97 Mo/s via Fuse - a directory copy (little files) to the server : 5 Mo/s in normal, 3 Mo/s via Fuse - a directory copy (little files) from the server : 3.5 Mo/s in normal, 3 Mo/s via Fuse The normal result are obtained using the option "use sendfile = yes" in samba whereas fuse use the same option as no. You can easily reproduce it there with the Ubuntu Jaunty image: $ ec2-run-instances ami-bf5eb9d6 -k gsg-keypair $ ec2-describe-instances RESERVATION r-e99ffb80 298888363381 default INSTANCE i-c996d6a0 ami-bf5eb9d6 ec2-174-129-141-219.compute-1.dom U-12-31-39-03-BC-D7.compute-1.internal running gsg-keypair 0 m1.small 2009-05-27T 0000 us-east-1b aki-a71cf9ce ari-a51cf9cc $ ssh -l root ec2-174-129-141-219.compute-1.# apt-get update # apt-get install python-fuse # mkdir tmp # python /usr/share/doc/python-fuse/examples/-f tmp & # ls tmp/ -- machine.) Where do I find the exact fuse-py package version? Please let me know know if the lost of performances is normal Regards Samuel And I can't reproduce. I looked for it in the file, but there was no version number.The Ubuntu package versions are: # apt-cache show python-fuse| grep Version Version: 1:0.2-pre3-9build1 # apt-cache show fuse-utils | grep Version Version: 2.7.4-1.1ubuntu4 # python --version Python 2.6.2 # uname -a Linux dom U-12-31-39-03-BC-D7 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 EST 2008 i686 GNU/Linux The above is from EC2.My local machine has the same fuse and python versions but $ uname -a Linux vostro 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 UTC 2009 i686 GNU/Linux Hope that helps, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C unpleasant side effects that we can find.

Fuse options big_writes

OK, committed this to the fuse_2_7_bugfix branch in CVS.I also committed the attached patch to both fuse_2_7_bugfix and HEAD, which in itself should also fix the bug.Thanks, Miklos --- lib/fuse.c -0000 1.219 lib/fuse.c -0000 @@ -1908,8 1908,11 @@ address the real problem. I don't see how the My Stat object comes to picture. What are you doing exactly in order to trigger this? Well, having multiple threads try to do I/O and each one flushing the cache that the other just filled is bound to cause slowdowns. The code seems to handle a readdir request, where fuse. What is the version of your whatever (fuse, python, fuse-py, kernel...)?So really, the cache flushes on open do not play well with the kernel NFS server. The problem is that libfuse can't find the path anymore. Direntry instances occur and not My Stat instances. (emphasis on fuse-py's exact package version id so that I can see how it is patched).The file has been deleted, no path is referring to it anymore. Hmm, seems like ftruncate(2) could be made to work, but it doesn't currently.

Fuse options big_writes

You can set the "op.flag_nullpath_ok" flag to 1, which will let some of the operations work with deleted files (read, write, fgetattr, fsync, lock). FUSE (Filesystem in Userspace) is a simple interface for userspace programs to export a virtual filesystem to the Linux kernel.FUSE also aims to provide a secure method for non privileged users to create and mount their own filesystem implementations. Binäre optionen broker test. FUSE The in-kernel filesystem that forwards requests to a user- space process.Filesystem The user-space process that responds to requests received from the kernel.Libfuse The shared library that most (user-space) filesystems use to communicate with FUSE (the kernel filesystem).