Date: Tue, 14 Jul 2009 14:55:15 -0700 From: Brian Somers <brian@FreeBSD.org> To: Giorgos Keramidas <keramida@FreeBSD.org> Cc: freebsd-hackers@FreeBSD.org Subject: Re: can we afford an extra column in iostat? Message-ID: <20090714145515.43e309ca@Awfulhak.org> In-Reply-To: <87d483q4en.fsf@kobe.laptop> References: <87d483q4en.fsf@kobe.laptop>
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On Tue, 14 Jul 2009 07:23:12 +0300, Giorgos Keramidas <keramida@freebsd.org> wrote: > While converting my laptop's main disk to zfs, I noticed iostat output > like this (bits copied from here and there): > > | keramida@kobe:/home/keramida$ iostat -w3 ad0 da0 > | tty ad0 da0 cpu > | tin tout KB/t tps MB/s KB/t tps MB/s us ni sy in id > | 5 2119 36.29 56 2.00 54.95 7 0.35 3 0 8 0 89 > | 0 9478 10.90 290 3.09 57.22 12 0.67 42 0 43 0 15 > | 012595 1.72 213 0.36 21.36 80 1.66 48 0 48 0 4 > | 050042 4.56 715 3.19 11.44 164 1.83 29 0 50 1 20 > | 11529568 7.34 443 3.17 16.97 165 2.74 31 0 53 0 16 >[.....] > | $ ./iostat -w2 > | tty ad0 md0 da0 cpu > | tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id > | 7 2570 32.92 62 1.98 6.46 0 0.00 43.44 10 0.41 4 0 9 0 87 > | 0 36506 0.99 507 0.49 0.00 0 0.00 20.13 155 3.04 34 0 56 1 9 > | 0 16695 0.83 226 0.18 0.00 0 0.00 26.16 97 2.48 35 0 56 0 9 > | 0 24158 10.63 428 4.45 0.00 0 0.00 14.44 137 1.93 32 0 51 0 17 > | ^C > > The patch that changes this is quite small: This should be fixed. Ironically, the only people that usually have problems with fixes like this are people that have seen the fields merge and have adjusted some script to understand column widths! -- Brian Somers <brian@Awfulhak.org> Don't _EVER_ lose your sense of humour ! <brian@FreeBSD.org>
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