Am 21.07.2011 18:17, schrieb Frediano Ziglio:
Hi,
after a snapshot is taken currently many write operations are quite
slow due to
- refcount updates (decrement old and increment new )
- cluster allocation and file expansion
- read-modify-write on partial clusters
I found 2 way to
2011/7/22 Kevin Wolf kw...@redhat.com:
Am 21.07.2011 18:17, schrieb Frediano Ziglio:
Hi,
after a snapshot is taken currently many write operations are quite
slow due to
- refcount updates (decrement old and increment new )
- cluster allocation and file expansion
- read-modify-write on
Am 22.07.2011 11:13, schrieb Frediano Ziglio:
2011/7/22 Kevin Wolf kw...@redhat.com:
Am 21.07.2011 18:17, schrieb Frediano Ziglio:
Hi,
after a snapshot is taken currently many write operations are quite
slow due to
- refcount updates (decrement old and increment new )
- cluster allocation
On Fri, Jul 22, 2011 at 10:13 AM, Frediano Ziglio fredd...@gmail.com wrote:
2011/7/22 Kevin Wolf kw...@redhat.com:
Am 21.07.2011 18:17, schrieb Frediano Ziglio:
Hi,
after a snapshot is taken currently many write operations are quite
slow due to
- refcount updates (decrement old and
2011/7/22 Stefan Hajnoczi stefa...@gmail.com:
On Fri, Jul 22, 2011 at 10:13 AM, Frediano Ziglio fredd...@gmail.com wrote:
2011/7/22 Kevin Wolf kw...@redhat.com:
Am 21.07.2011 18:17, schrieb Frediano Ziglio:
Hi,
after a snapshot is taken currently many write operations are quite
slow due to
On Fri, Jul 22, 2011 at 3:21 PM, Frediano Ziglio fredd...@gmail.com wrote:
2011/7/22 Stefan Hajnoczi stefa...@gmail.com:
On Fri, Jul 22, 2011 at 10:13 AM, Frediano Ziglio fredd...@gmail.com wrote:
2011/7/22 Kevin Wolf kw...@redhat.com:
Am 21.07.2011 18:17, schrieb Frediano Ziglio:
Hi,
Hi,
after a snapshot is taken currently many write operations are quite
slow due to
- refcount updates (decrement old and increment new )
- cluster allocation and file expansion
- read-modify-write on partial clusters
I found 2 way to improve refcount performance
Method 1 - Lazy count
Mainly