On 30/01/15 22:48, Kevin Wolf wrote:
Am 30.01.2015 um 19:39 hat Denis V. Lunev geschrieben:
On 29/01/15 16:49, Denis V. Lunev wrote:
On 29/01/15 16:18, Kevin Wolf wrote:
Am 29.01.2015 um 11:50 hat Denis V. Lunev geschrieben:
The following sequence
int fd = open(argv[1], O_RDWR | O_CREAT
Am 30.01.2015 um 19:39 hat Denis V. Lunev geschrieben:
> On 29/01/15 16:49, Denis V. Lunev wrote:
> >On 29/01/15 16:18, Kevin Wolf wrote:
> >>Am 29.01.2015 um 11:50 hat Denis V. Lunev geschrieben:
> >>>The following sequence
> >>> int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644);
> >>>
On 29/01/15 16:49, Denis V. Lunev wrote:
On 29/01/15 16:18, Kevin Wolf wrote:
Am 29.01.2015 um 11:50 hat Denis V. Lunev geschrieben:
The following sequence
int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644);
for (i = 0; i < 10; i++)
write(fd, buf, 4096);
perfor
On 29/01/15 16:18, Kevin Wolf wrote:
Am 29.01.2015 um 11:50 hat Denis V. Lunev geschrieben:
The following sequence
int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644);
for (i = 0; i < 10; i++)
write(fd, buf, 4096);
performs 5% better if buf is aligned to 4096 byt
Am 29.01.2015 um 11:50 hat Denis V. Lunev geschrieben:
> The following sequence
> int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644);
> for (i = 0; i < 10; i++)
> write(fd, buf, 4096);
> performs 5% better if buf is aligned to 4096 bytes rather then to
> 512 bytes on
On 29/01/2015 11:50, Denis V. Lunev wrote:
> The following sequence
> int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644);
> for (i = 0; i < 10; i++)
> write(fd, buf, 4096);
> performs 5% better if buf is aligned to 4096 bytes rather then to
> 512 bytes on HDD with 5
The following sequence
int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644);
for (i = 0; i < 10; i++)
write(fd, buf, 4096);
performs 5% better if buf is aligned to 4096 bytes rather then to
512 bytes on HDD with 512/4096 logical/physical sector size.
The difference is
