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usr.sbin/gstat: add microsecond precision for disk latency

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This patch makes gstat to show latency in microseconds if actual latency
is less than 1ms. It affects only "ms/r" and "ms/w" columns.

Before patch:
 L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
    0    922      0      0    0.0    922  35809    0.0    2.8| nda0
    0    928      2     34    0.1    926  35809    0.0    3.1| nda1

After patch:
 L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
    0    496      1     31  0.156    495  16020  0.040    1.5| nda0
    0    492      0      0  0.000    492  16020  0.042    1.5| nda1

Reviewed by:	imp
MFC after:	3 days
Sponsored by:	Postgres Professional
Differential Revision:	https://reviews.freebsd.org/D41999
This commit is contained in:
Michael Zhilin
2024-08-04 11:31:06 +03:00
parent d6fb9f8ca3
commit d471b4f71d
1 changed files with 28 additions and 8 deletions
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usr.sbin/gstat/gstat.c
+28 -8
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@@ -406,16 +406,20 @@ main(int argc, char **argv)
PRINTMSG(",%.0f", (double)ld[2] * 1024); PRINTMSG(",%.0f", (double)ld[2] * 1024);
if (ld[3] > 1e3) if (ld[3] > 1e3)
PRINTMSG(",%.0f", (double)ld[3]); PRINTMSG(",%.0f", (double)ld[3]);
else else if (ld[3] > 1e0)
PRINTMSG(",%.1f", (double)ld[3]); PRINTMSG(",%.1f", (double)ld[3]);
else
PRINTMSG(",%.3f", (double)ld[3]);
PRINTMSG(",%.0f", (double)ld[4]); PRINTMSG(",%.0f", (double)ld[4]);
if (flag_s) if (flag_s)
PRINTMSG(",%.0f", (double)ld[14]); PRINTMSG(",%.0f", (double)ld[14]);
PRINTMSG(",%.0f", (double)ld[5] * 1024); PRINTMSG(",%.0f", (double)ld[5] * 1024);
if (ld[6] > 1e3) if (ld[6] > 1e3)
PRINTMSG(",%.0f", (double)ld[6]); PRINTMSG(",%.0f", (double)ld[6]);
else else if (ld[6] > 1e0)
PRINTMSG(",%.1f", (double)ld[6]); PRINTMSG(",%.1f", (double)ld[6]);
else
PRINTMSG(",%.3f", (double)ld[6]);
if (flag_d) { if (flag_d) {
PRINTMSG(",%.0f", (double)ld[8]); PRINTMSG(",%.0f", (double)ld[8]);
@@ -426,9 +430,12 @@ main(int argc, char **argv)
if (ld[10] > 1e3) if (ld[10] > 1e3)
PRINTMSG(",%.0f", PRINTMSG(",%.0f",
(double)ld[10]); (double)ld[10]);
else else if (ld[10] > 1e0)
PRINTMSG(",%.1f", PRINTMSG(",%.1f",
(double)ld[10]); (double)ld[10]);
else
PRINTMSG(",%.3f",
(double)ld[10]);
} }
if (flag_o) { if (flag_o) {
@@ -436,9 +443,12 @@ main(int argc, char **argv)
if (ld[12] > 1e3) if (ld[12] > 1e3)
PRINTMSG(",%.0f", PRINTMSG(",%.0f",
(double)ld[12]); (double)ld[12]);
else else if (ld[12] > 1e0)
PRINTMSG(",%.1f", PRINTMSG(",%.1f",
(double)ld[12]); (double)ld[12]);
else
PRINTMSG(",%.3f",
(double)ld[12]);
} }
PRINTMSG(",%.1lf", (double)ld[7]); PRINTMSG(",%.1lf", (double)ld[7]);
} else { } else {
@@ -450,16 +460,20 @@ main(int argc, char **argv)
PRINTMSG(" %6.0f", (double)ld[2] * 1024); PRINTMSG(" %6.0f", (double)ld[2] * 1024);
if (ld[3] > 1e3) if (ld[3] > 1e3)
PRINTMSG(" %6.0f", (double)ld[3]); PRINTMSG(" %6.0f", (double)ld[3]);
else else if (ld[3] > 1e0)
PRINTMSG(" %6.1f", (double)ld[3]); PRINTMSG(" %6.1f", (double)ld[3]);
else
PRINTMSG(" %6.3f", (double)ld[3]);
PRINTMSG(" %6.0f", (double)ld[4]); PRINTMSG(" %6.0f", (double)ld[4]);
if (flag_s) if (flag_s)
PRINTMSG(" %6.0f", (double)ld[14]); PRINTMSG(" %6.0f", (double)ld[14]);
PRINTMSG(" %6.0f", (double)ld[5] * 1024); PRINTMSG(" %6.0f", (double)ld[5] * 1024);
if (ld[6] > 1e3) if (ld[6] > 1e3)
PRINTMSG(" %6.0f", (double)ld[6]); PRINTMSG(" %6.0f", (double)ld[6]);
else else if (ld[6] > 1e0)
PRINTMSG(" %6.1f", (double)ld[6]); PRINTMSG(" %6.1f", (double)ld[6]);
else
PRINTMSG(" %6.3f", (double)ld[6]);
if (flag_d) { if (flag_d) {
PRINTMSG(" %6.0f", (double)ld[8]); PRINTMSG(" %6.0f", (double)ld[8]);
@@ -471,9 +485,12 @@ main(int argc, char **argv)
if (ld[10] > 1e3) if (ld[10] > 1e3)
PRINTMSG(" %6.0f", PRINTMSG(" %6.0f",
(double)ld[10]); (double)ld[10]);
else else if (ld[10] > 1e0)
PRINTMSG(" %6.1f", PRINTMSG(" %6.1f",
(double)ld[10]); (double)ld[10]);
else
PRINTMSG(" %6.3f",
(double)ld[10]);
} }
if (flag_o) { if (flag_o) {
@@ -481,9 +498,12 @@ main(int argc, char **argv)
if (ld[12] > 1e3) if (ld[12] > 1e3)
PRINTMSG(" %6.0f", PRINTMSG(" %6.0f",
(double)ld[12]); (double)ld[12]);
else else if (ld[12] > 1e0)
PRINTMSG(" %6.1f", PRINTMSG(" %6.1f",
(double)ld[12]); (double)ld[12]);
else
PRINTMSG(" %6.3f",
(double)ld[12]);
} }
if (ld[7] > HIGH_PCT_BUSY_THRESH) if (ld[7] > HIGH_PCT_BUSY_THRESH)