Re: `btrfs receive` almost coming to a halt
On 09.05.2013 17:14, Remco Hosman - Yerf IT wrote: kernel: 3.9.0 btrfs-progs: pulled from git this morning Trying to receive a 5gig send file. the first bit is fast, doing 10 - 50MB/sec. then it slows down. cpu usage is 50% (dual core machine). when i do a strace, it looks like this, repeating over an over, about 1 piece each second: -- read(3, q\0\0\0\20\0008\352\327o, 10) = 10 read(3, \22\0\10\0\0\0$~\0\0\0\0\30\0\10\0\0\0\2\0\0\0\0\0\17\0\24\0DB2/..., 113) = 113 open(/media/snaps/yerf-2013-05-02-03:15:01/DB2/DB2-flat.vmdk, O_RDONLY|O_NOATIME) = 6 ioctl(5, 0x4020940d, 0x7fffc6d41c60)= 0 close(6)= 0 read(3, q\0\0\0\20\0\242\357\263, 10) = 10 read(3, \22\0\10\0\0\0~\0\0\0\0\30\0\10\0\0\0\2\0\0\0\0\0\17\0\24\0DB2/..., 113) = 113 open(/media/snaps/yerf-2013-05-02-03:15:01/DB2/DB2-flat.vmdk, O_RDONLY|O_NOATIME) = 6 ioctl(5, 0x4020940d, 0x7fffc6d41c60)= 0 close(6)= 0 -- Is this the receive side? Where does the data come from, a local file or via network? -Arne it pauses for a second after ioctl(5, 0x4020940d it has been running like that for 3 hours now. the file its working is large (80gig) and filefrag reports 648862 extends. filesystem is mounted with rw,relatime,compress-force=lzo,space_cache anything i can do to see what the problem is? Remco-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: `btrfs receive` almost coming to a halt
On May 10, 2013, at 9:27 AM, Arne Jansen sensi...@gmx.net wrote: On 09.05.2013 17:14, Remco Hosman - Yerf IT wrote: kernel: 3.9.0 btrfs-progs: pulled from git this morning Trying to receive a 5gig send file. the first bit is fast, doing 10 - 50MB/sec. then it slows down. cpu usage is 50% (dual core machine). when i do a strace, it looks like this, repeating over an over, about 1 piece each second: -- read(3, q\0\0\0\20\0008\352\327o, 10) = 10 read(3, \22\0\10\0\0\0$~\0\0\0\0\30\0\10\0\0\0\2\0\0\0\0\0\17\0\24\0DB2/..., 113) = 113 open(/media/snaps/yerf-2013-05-02-03:15:01/DB2/DB2-flat.vmdk, O_RDONLY|O_NOATIME) = 6 ioctl(5, 0x4020940d, 0x7fffc6d41c60)= 0 close(6)= 0 read(3, q\0\0\0\20\0\242\357\263, 10) = 10 read(3, \22\0\10\0\0\0~\0\0\0\0\30\0\10\0\0\0\2\0\0\0\0\0\17\0\24\0DB2/..., 113) = 113 open(/media/snaps/yerf-2013-05-02-03:15:01/DB2/DB2-flat.vmdk, O_RDONLY|O_NOATIME) = 6 ioctl(5, 0x4020940d, 0x7fffc6d41c60)= 0 close(6)= 0 -- Is this the receive side? Where does the data come from, a local file or via network? Yes, this is the receiving side. data comes from a local file. sometimes it does hit a 'good' portion, then i get a strafe like this: read(3, (\300\0\0\17\0N0\346\307, 10) = 10 read(3, \17\0\24\0DB2/DB2-flat.vmdk.ok\22\0\10\0\0@\25\325..., 49192) = 49192 pwrite(5,\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0...,49152,3574939648) = 49152 Managed to find what ioctl 0x4020940d is in the meantime: BTRFS_IOC_CLONE_RANGE, with 32 bytes parameters (4x int64). have not managed to get the parameters yet. i have no idea how to work gbd. but i guess they are coming from the 113 bytes it is reading. Remco -Arne it pauses for a second after ioctl(5, 0x4020940d it has been running like that for 3 hours now. the file its working is large (80gig) and filefrag reports 648862 extends. filesystem is mounted with rw,relatime,compress-force=lzo,space_cache anything i can do to see what the problem is? Remco-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
`btrfs receive` almost coming to a halt
kernel: 3.9.0 btrfs-progs: pulled from git this morning Trying to receive a 5gig send file. the first bit is fast, doing 10 - 50MB/sec. then it slows down. cpu usage is 50% (dual core machine). when i do a strace, it looks like this, repeating over an over, about 1 piece each second: -- read(3, q\0\0\0\20\0008\352\327o, 10) = 10 read(3, \22\0\10\0\0\0$~\0\0\0\0\30\0\10\0\0\0\2\0\0\0\0\0\17\0\24\0DB2/..., 113) = 113 open(/media/snaps/yerf-2013-05-02-03:15:01/DB2/DB2-flat.vmdk, O_RDONLY|O_NOATIME) = 6 ioctl(5, 0x4020940d, 0x7fffc6d41c60)= 0 close(6)= 0 read(3, q\0\0\0\20\0\242\357\263, 10) = 10 read(3, \22\0\10\0\0\0~\0\0\0\0\30\0\10\0\0\0\2\0\0\0\0\0\17\0\24\0DB2/..., 113) = 113 open(/media/snaps/yerf-2013-05-02-03:15:01/DB2/DB2-flat.vmdk, O_RDONLY|O_NOATIME) = 6 ioctl(5, 0x4020940d, 0x7fffc6d41c60)= 0 close(6)= 0 -- it pauses for a second after ioctl(5, 0x4020940d it has been running like that for 3 hours now. the file its working is large (80gig) and filefrag reports 648862 extends. filesystem is mounted with rw,relatime,compress-force=lzo,space_cache anything i can do to see what the problem is? Remco-- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
