Re: dump cache performance
Peter Jeremy peterjer...@acm.org writes: I've mostly convered to ZFS but still have UFS root (which is basically a full base install without /var but including /usr/src - 94k inodes and 1.7GB). I've run both the 8-stable (stable) and patched (jfd) dump alternately 4 times with 50/250MB cache with the following results: x stable + jfd ++ | +| | +| | x+| |x xx +| ||AMA| ++ N Min MaxMedian AvgStddev x 4 9413 9673 95689555.5 107.12143 + 4 15359 15359 15359 15359 0 9413 what? Puppies? DES -- Dag-Erling Smørgrav - d...@des.no ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to freebsd-hackers-unsubscr...@freebsd.org
Re: dump cache performance
On 2010-Oct-27 20:17:06 +0200, Dag-Erling Smørgrav d...@des.no wrote: Peter Jeremy peterjer...@acm.org writes: I've mostly convered to ZFS but still have UFS root (which is basically a full base install without /var but including /usr/src - 94k inodes and 1.7GB). I've run both the 8-stable (stable) and patched (jfd) dump alternately 4 times with 50/250MB cache with the following results: x stable + jfd ++ | +| | +| | x+| |x xx +| ||AMA| ++ N Min MaxMedian AvgStddev x 4 9413 9673 95689555.5 107.12143 + 4 15359 15359 15359 15359 0 9413 what? Puppies? Ooops, sorry - KB/sec as reported in the dump summary. -- Peter Jeremy pgp3QZs1Cb6ob.pgp Description: PGP signature
Re: dump cache performance
Peter Jeremy peterjer...@acm.org writes: Dag-Erling Smørgrav d...@des.no wrote: 9413 what? Puppies? Ooops, sorry - KB/sec as reported in the dump summary. Thank you :) DES -- Dag-Erling Smørgrav - d...@des.no ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to freebsd-hackers-unsubscr...@freebsd.org
Re: dump cache performance
On 2010-Oct-24 18:05:05 +0200, Jean-Francois Dockes j...@dockes.org wrote: It appears that modifying dump to use a shared cache in a very simple way (move the control structures to the shared segment and perform simple locking) yields substantial speed increases. Indeed. That's better than I expected. Would someone be interested in reviewing the patch and/or perform more tests ? I've mostly convered to ZFS but still have UFS root (which is basically a full base install without /var but including /usr/src - 94k inodes and 1.7GB). I've run both the 8-stable (stable) and patched (jfd) dump alternately 4 times with 50/250MB cache with the following results: x stable + jfd ++ | +| | +| | x+| |x xx +| ||AMA| ++ N Min MaxMedian AvgStddev x 4 9413 9673 95689555.5 107.12143 + 4 15359 15359 15359 15359 0 Difference at 95.0% confidence 5803.5 +/- 131.063 60.7347% +/- 1.3716% (Student's t, pooled s = 75.7463) -- Peter Jeremy pgpTPIvainovD.pgp Description: PGP signature
