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From 6bc60e8cc87701c8f68c1cda56dd7120b5565700 Mon Sep 17 00:00:00 2001
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From: Kazuhito Hagio <k-hagio-ab@nec.com>
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Date: Wed, 22 Jun 2022 08:32:59 +0900
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Subject: [PATCH 02/28] Extend field length of task attributes
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Nowadays, some machines have many CPU cores and memory, and some
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distributions have a larger kernel.pid_max parameter, e.g. 7 digits.
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This impairs the readability of a few commands, especially "ps" and
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"ps -l|-m" options.
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Let's extend the field length of the task attributes, PID, CPU, VSZ,
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and RSS to improve the readability.
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Without the patch:
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crash> ps
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PID PPID CPU TASK ST %MEM VSZ RSS COMM
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...
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2802197 2699997 2 ffff916f63c40000 IN 0.0 307212 10688 timer
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2802277 1 0 ffff9161a25bb080 IN 0.0 169040 2744 gpg-agent
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2806711 3167854 10 ffff9167fc498000 IN 0.0 127208 6508 su
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2806719 2806711 1 ffff91633c3a48c0 IN 0.0 29452 6416 bash
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2988346 1 5 ffff916f7c629840 IN 2.8 9342476 1917384 qemu-kvm
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With the patch:
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crash> ps
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PID PPID CPU TASK ST %MEM VSZ RSS COMM
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...
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2802197 2699997 2 ffff916f63c40000 IN 0.0 307212 10688 timer
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2802277 1 0 ffff9161a25bb080 IN 0.0 169040 2744 gpg-agent
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2806711 3167854 10 ffff9167fc498000 IN 0.0 127208 6508 su
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2806719 2806711 1 ffff91633c3a48c0 IN 0.0 29452 6416 bash
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2988346 1 5 ffff916f7c629840 IN 2.8 9342476 1917384 qemu-kvm
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Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
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Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
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---
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task.c | 10 +++++-----
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1 file changed, 5 insertions(+), 5 deletions(-)
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diff --git a/task.c b/task.c
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index 864c838637ee..071c787fbfa5 100644
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--- a/task.c
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+++ b/task.c
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@@ -3828,7 +3828,7 @@ show_ps_data(ulong flag, struct task_context *tc, struct psinfo *psi)
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} else
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fprintf(fp, " ");
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- fprintf(fp, "%5ld %5ld %2s %s %3s",
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+ fprintf(fp, "%7ld %7ld %3s %s %3s",
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tc->pid, task_to_pid(tc->ptask),
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task_cpu(tc->processor, buf2, !VERBOSE),
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task_pointer_string(tc, flag & PS_KSTACKP, buf3),
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@@ -3838,8 +3838,8 @@ show_ps_data(ulong flag, struct task_context *tc, struct psinfo *psi)
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if (strlen(buf1) == 3)
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mkstring(buf1, 4, CENTER|RJUST, NULL);
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fprintf(fp, "%s ", buf1);
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- fprintf(fp, "%7ld ", (tm->total_vm * PAGESIZE())/1024);
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- fprintf(fp, "%6ld ", (tm->rss * PAGESIZE())/1024);
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+ fprintf(fp, "%8ld ", (tm->total_vm * PAGESIZE())/1024);
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+ fprintf(fp, "%8ld ", (tm->rss * PAGESIZE())/1024);
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if (is_kernel_thread(tc->task))
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fprintf(fp, "[%s]\n", tc->comm);
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else
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@@ -3856,7 +3856,7 @@ show_ps(ulong flag, struct psinfo *psi)
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if (!(flag & ((PS_EXCLUSIVE & ~PS_ACTIVE)|PS_NO_HEADER)))
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fprintf(fp,
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- " PID PPID CPU %s ST %%MEM VSZ RSS COMM\n",
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+ " PID PPID CPU %s ST %%MEM VSZ RSS COMM\n",
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flag & PS_KSTACKP ?
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mkstring(buf, VADDR_PRLEN, CENTER|RJUST, "KSTACKP") :
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mkstring(buf, VADDR_PRLEN, CENTER, "TASK"));
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@@ -7713,7 +7713,7 @@ print_task_header(FILE *out, struct task_context *tc, int newline)
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char buf[BUFSIZE];
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char buf1[BUFSIZE];
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- fprintf(out, "%sPID: %-5ld TASK: %s CPU: %-2s COMMAND: \"%s\"\n",
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+ fprintf(out, "%sPID: %-7ld TASK: %s CPU: %-3s COMMAND: \"%s\"\n",
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newline ? "\n" : "", tc->pid,
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mkstring(buf1, VADDR_PRLEN, LJUST|LONG_HEX, MKSTR(tc->task)),
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task_cpu(tc->processor, buf, !VERBOSE), tc->comm);
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--
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2.37.1
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