Date: Fri, 1 Oct 2010 14:51:12 -0400 From: "Dan Langille" <dan@langille.org> To: freebsd-stable@freebsd.org Subject: Re: zfs send/receive: is this slow? Message-ID: <45cfd27021fb93f9b0877a1596089776.squirrel@nyi.unixathome.org> In-Reply-To: <a263c3beaeb0fa3acd82650775e31ee3.squirrel@nyi.unixathome.org> References: <a263c3beaeb0fa3acd82650775e31ee3.squirrel@nyi.unixathome.org>
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On Wed, September 29, 2010 2:04 pm, Dan Langille wrote:
> $ zpool iostat 10
> capacity operations bandwidth
> pool used avail read write read write
> ---------- ----- ----- ----- ----- ----- -----
> storage 7.67T 5.02T 358 38 43.1M 1.96M
> storage 7.67T 5.02T 317 475 39.4M 30.9M
> storage 7.67T 5.02T 357 533 44.3M 34.4M
> storage 7.67T 5.02T 371 556 46.0M 35.8M
> storage 7.67T 5.02T 313 521 38.9M 28.7M
> storage 7.67T 5.02T 309 457 38.4M 30.4M
> storage 7.67T 5.02T 388 589 48.2M 37.8M
> storage 7.67T 5.02T 377 581 46.8M 36.5M
> storage 7.67T 5.02T 310 559 38.4M 30.4M
> storage 7.67T 5.02T 430 611 53.4M 41.3M
Now that I'm using mbuffer:
$ zpool iostat 10
capacity operations bandwidth
pool used avail read write read write
---------- ----- ----- ----- ----- ----- -----
storage 9.96T 2.73T 2.01K 131 151M 6.72M
storage 9.96T 2.73T 615 515 76.3M 33.5M
storage 9.96T 2.73T 360 492 44.7M 33.7M
storage 9.96T 2.73T 388 554 48.3M 38.4M
storage 9.96T 2.73T 403 562 50.1M 39.6M
storage 9.96T 2.73T 313 468 38.9M 28.0M
storage 9.96T 2.73T 462 677 57.3M 22.4M
storage 9.96T 2.73T 383 581 47.5M 21.6M
storage 9.96T 2.72T 142 571 17.7M 15.4M
storage 9.96T 2.72T 80 598 10.0M 18.8M
storage 9.96T 2.72T 718 503 89.1M 13.6M
storage 9.96T 2.72T 594 517 73.8M 14.1M
storage 9.96T 2.72T 367 528 45.6M 15.1M
storage 9.96T 2.72T 338 520 41.9M 16.4M
storage 9.96T 2.72T 348 499 43.3M 21.5M
storage 9.96T 2.72T 398 553 49.4M 14.4M
storage 9.96T 2.72T 346 481 43.0M 6.78M
If anything, it's slower.
The above was without -s 128. The following used that setting:
$ zpool iostat 10
capacity operations bandwidth
pool used avail read write read write
---------- ----- ----- ----- ----- ----- -----
storage 9.78T 2.91T 1.98K 137 149M 6.92M
storage 9.78T 2.91T 761 577 94.4M 42.6M
storage 9.78T 2.91T 462 411 57.4M 24.6M
storage 9.78T 2.91T 492 497 61.1M 27.6M
storage 9.78T 2.91T 632 446 78.5M 22.5M
storage 9.78T 2.91T 554 414 68.7M 21.8M
storage 9.78T 2.91T 459 434 57.0M 31.4M
storage 9.78T 2.91T 398 570 49.4M 32.7M
storage 9.78T 2.91T 338 495 41.9M 26.5M
storage 9.78T 2.91T 358 526 44.5M 33.3M
storage 9.78T 2.91T 385 555 47.8M 39.8M
storage 9.78T 2.91T 271 453 33.6M 23.3M
storage 9.78T 2.91T 270 456 33.5M 28.8M
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