dd is on the ramdisks, have you tested them at all?
On 2011/10/19 21:12, Thomas Pfaff wrote:
> This adds a new option disp that can be set to "human" for a more human-
> readable completion message. This does not change the current behavior.
>
> $ dd if=/dev/zero of=/tmp/kthxbye bs=1337K count=42 disp=human
> 42+0 records in
> 42+0 records out
> 57501696 bytes (54.8MB) transferred in 0.161 seconds (340MB/s)
>
> $ dd if=/dev/zero of=/tmp/kthxbye bs=1337K count=42
> 42+0 records in
> 42+0 records out
> 57501696 bytes transferred in 0.138 secs (415847262 bytes/sec)
>
> You can add disp=legacy if you one day should decide to make disp=human
> the default (yah). Simple modification to scripts to keep them working.
>
> I know you're all thrilled seeing yet another dd diff from me, but rest
> assured; this is the last one ... for now ;-)
>
> So, if anyone is interested:
>
> Index: Makefile
> ===================================================================
> RCS file: /cvs/src/bin/dd/Makefile,v
> retrieving revision 1.5
> diff -u -p -r1.5 Makefile
> --- Makefile 29 May 1998 04:34:20 -0000 1.5
> +++ Makefile 19 Oct 2011 18:50:31 -0000
> @@ -2,5 +2,7 @@
>
> PROG= dd
> SRCS= args.c conv.c conv_tab.c dd.c misc.c position.c
> +DPADD= ${LIBUTIL}
> +LDADD= -lutil
>
> .include <bsd.prog.mk>
> Index: args.c
> ===================================================================
> RCS file: /cvs/src/bin/dd/args.c,v
> retrieving revision 1.19
> diff -u -p -r1.19 args.c
> --- args.c 18 Oct 2011 09:37:35 -0000 1.19
> +++ args.c 19 Oct 2011 18:50:31 -0000
> @@ -53,6 +53,7 @@ static void f_bs(char *);
> static void f_cbs(char *);
> static void f_conv(char *);
> static void f_count(char *);
> +static void f_disp(char *);
> static void f_files(char *);
> static void f_ibs(char *);
> static void f_if(char *);
> @@ -72,6 +73,7 @@ static const struct arg {
> { "cbs", f_cbs, C_CBS, C_CBS },
> { "conv", f_conv, 0, 0 },
> { "count", f_count, C_COUNT, C_COUNT },
> + { "disp", f_disp, 0, 0 },
> { "files", f_files, C_FILES, C_FILES },
> { "ibs", f_ibs, C_IBS, C_BS|C_IBS },
> { "if", f_if, C_IF, C_IF },
> @@ -197,6 +199,14 @@ f_count(char *arg)
>
> if ((cpy_cnt = get_bsz(arg)) == 0)
> cpy_cnt = (size_t)-1;
> +}
> +
> +static void
> +f_disp(char *arg)
> +{
> +
> + if ((disp_human = !strcmp(arg, "human")) != 1)
> + errx(1, "%s: illegal value", "disp");
> }
>
> static void
> Index: dd.1
> ===================================================================
> RCS file: /cvs/src/bin/dd/dd.1,v
> retrieving revision 1.25
> diff -u -p -r1.25 dd.1
> --- dd.1 18 Oct 2011 09:37:35 -0000 1.25
> +++ dd.1 19 Oct 2011 18:50:31 -0000
> @@ -137,6 +137,13 @@ Otherwise, input data is read and discar
> For pipes, the correct number of bytes is read.
> For all other devices, the correct number of blocks is read without
> distinguishing between a partial or complete block being read.
> +.It Cm disp= Ns Ar s
> +If
> +.Ar s
> +is
> +.Sq human
> +the completion message will be displayed in a more human-readable format
> +using the appropriate size suffixes.
> .It Xo
> .Sm off
> .Cm conv= Ar value Oo ,
> @@ -371,6 +378,9 @@ specification.
> .Pp
> The
> .Cm files
> +operand,
> +the
> +.Cm disp
> operand,
> the conversions
> .Cm oldascii ,
> Index: extern.h
> ===================================================================
> RCS file: /cvs/src/bin/dd/extern.h,v
> retrieving revision 1.7
> diff -u -p -r1.7 extern.h
> --- extern.h 25 Jun 2003 21:12:30 -0000 1.7
> +++ extern.h 19 Oct 2011 18:50:31 -0000
> @@ -57,6 +57,7 @@ extern STAT st;
> extern void (*cfunc)(void);
> extern size_t cpy_cnt;
> extern size_t cbsz;
> +extern int disp_human;
> extern u_int ddflags;
> extern size_t files_cnt;
> extern const u_char *ctab;
> Index: misc.c
> ===================================================================
> RCS file: /cvs/src/bin/dd/misc.c,v
> retrieving revision 1.16
> diff -u -p -r1.16 misc.c
> --- misc.c 27 Oct 2009 23:59:21 -0000 1.16
> +++ misc.c 19 Oct 2011 18:50:31 -0000
> @@ -45,10 +45,13 @@
> #include <errno.h>
> #include <time.h>
> #include <unistd.h>
> +#include <util.h>
>
> #include "dd.h"
> #include "extern.h"
>
> +int disp_human;
> +
> void
> summary(void)
> {
> @@ -57,6 +60,7 @@ summary(void)
> struct iovec iov[4];
> double microsecs;
> int i = 0;
> + char sizebuf[FMT_SCALED_STRSIZE], ratebuf[FMT_SCALED_STRSIZE];
>
> (void)gettimeofday(&nowtv, (struct timezone *)NULL);
> timersub(&nowtv, &st.startv, &nowtv);
> @@ -85,10 +89,25 @@ summary(void)
> iov[i].iov_base = buf[2];
> iov[i++].iov_len = strlen(buf[2]);
> }
> - (void)snprintf(buf[3], sizeof(buf[3]),
> - "%qd bytes transferred in %ld.%03ld secs (%0.0f bytes/sec)\n",
> - (long long)st.bytes, nowtv.tv_sec, nowtv.tv_usec / 1000,
> - ((double)st.bytes * 1000000) / microsecs);
> +
> + if (disp_human) {
> + strlcpy(sizebuf, "?", sizeof sizebuf);
> + fmt_scaled(st.bytes, sizebuf);
> + sizebuf[strcspn(sizebuf, "B")] = '\0';
> +
> + strlcpy(ratebuf, "?", sizeof ratebuf);
> + fmt_scaled(st.bytes * 1000000.0 / microsecs, ratebuf);
> + ratebuf[strcspn(ratebuf, "B")] = '\0';
> +
> + snprintf(buf[3], sizeof(buf[3]), "%qd bytes (%sB) transferred "
> + "in %ld.%03ld seconds (%sB/s)\n", (long long)st.bytes,
> + sizebuf, nowtv.tv_sec, nowtv.tv_usec / 1000, ratebuf);
> + } else {
> + snprintf(buf[3], sizeof(buf[3]), "%qd bytes transferred in "
> + "%ld.%03ld secs (%0.0f bytes/sec)\n", (long long)st.bytes,
> + nowtv.tv_sec, nowtv.tv_usec / 1000,
> + ((double)st.bytes * 1000000) / microsecs);
> + }
>
> iov[i].iov_base = buf[3];
> iov[i++].iov_len = strlen(buf[3]);
