Re: [zfs-discuss] ZFS taking up to 80 seconds to flush a single 8KB O_SYNC block.

2008-02-20 Thread Roch Bourbonnais
Le 20 févr. 08 à 23:03, Robert Milkowski a écrit : > Hello Roch, > > Friday, February 15, 2008, 10:51:50 AM, you wrote: > > RB> Le 10 févr. 08 à 12:51, Robert Milkowski a écrit : > >>> Hello Nathan, >>> >>> Thursday, February 7, 2008, 6:54:39 AM, you wrote: >>> >>> NK> For kicks, I disabled the Z

Re: [zfs-discuss] ZFS taking up to 80 seconds to flush a single 8KB O_SYNC block.

2008-02-20 Thread Robert Milkowski
Hello Roch, Friday, February 15, 2008, 10:51:50 AM, you wrote: RB> Le 10 févr. 08 à 12:51, Robert Milkowski a écrit : >> Hello Nathan, >> >> Thursday, February 7, 2008, 6:54:39 AM, you wrote: >> >> NK> For kicks, I disabled the ZIL: zil_disable/W0t1, and that made >> not a >> NK> pinch of diff

Re: [zfs-discuss] ZFS taking up to 80 seconds to flush a single 8KB O_SYNC block.

2008-02-15 Thread Roch Bourbonnais
Le 10 févr. 08 à 12:51, Robert Milkowski a écrit : > Hello Nathan, > > Thursday, February 7, 2008, 6:54:39 AM, you wrote: > > NK> For kicks, I disabled the ZIL: zil_disable/W0t1, and that made > not a > NK> pinch of difference. :) > > Have you exported and them imported pool to get zil_disable

Re: [zfs-discuss] ZFS taking up to 80 seconds to flush a single 8KB O_SYNC block.

2008-02-10 Thread Robert Milkowski
Hello Nathan, Thursday, February 7, 2008, 6:54:39 AM, you wrote: NK> For kicks, I disabled the ZIL: zil_disable/W0t1, and that made not a NK> pinch of difference. :) Have you exported and them imported pool to get zil_disable into effect? -- Best regards, Robert Milkowski

[zfs-discuss] ZFS taking up to 80 seconds to flush a single 8KB O_SYNC block.

2008-02-06 Thread Nathan Kroenert
Hey all - I'm working on an interesting issue where I'm seeing ZFS being quite cranky about writing O_SYNC written blocks. Bottom line is that I have a small test case that does essentially this: open file for writing -- O_SYNC loop( write() 8KB of random data print time taken