我开发了一个应用程序，并且我想测量在一些典型测试用例中它消耗了多少网络带宽。如何可靠地测量进程使用的网络带宽
我发现了几个应用程序，如nethog等，但我不知道它的报告是多么准确！
我想用某种方式来非常准确地测量结果需要进入会议报告的结果。
如果有人指导我如何做，我愿意为相同的方案编写定制的解决方案！
我想要一些可以运行监控程序和我的目标应用程序来获取网络使用情况统计信息 - 累计字节数/ rcvd。 ..最大使用量和平均使用量 等
应用程序可以在一台机器上隔离吗？
还有其他的东西需要在系统上运行吗？
如果系统可以这种方式专用，则周期性地从/proc/net/netstat中抓取最后一行并减去InOctets和OutOctets的相应值。
该系统的Fedora 15，显示了这个在23天后的正常运行时间：
TcpExt: SyncookiesSent SyncookiesRecv SyncookiesFailed EmbryonicRsts PruneCalled RcvPruned OfoPruned OutOfWindowIcmps LockDroppedIcmps ArpFilter TW TWRecycled TWKilled PAWSPassive PAWSActive PAWSEstab DelayedACKs DelayedACKLocked DelayedACKLost ListenOverflows ListenDrops TCPPrequeued TCPDirectCopyFromBacklog TCPDirectCopyFromPrequeue TCPPrequeueDropped TCPHPHits TCPHPHitsToUser TCPPureAcks TCPHPAcks TCPRenoRecovery TCPSackRecovery TCPSACKReneging TCPFACKReorder TCPSACKReorder TCPRenoReorder TCPTSReorder TCPFullUndo TCPPartialUndo TCPDSACKUndo TCPLossUndo TCPLoss TCPLostRetransmit TCPRenoFailures TCPSackFailures TCPLossFailures TCPFastRetrans TCPForwardRetrans TCPSlowStartRetrans TCPTimeouts TCPRenoRecoveryFail TCPSackRecoveryFail TCPSchedulerFailed TCPRcvCollapsed TCPDSACKOldSent TCPDSACKOfoSent TCPDSACKRecv TCPDSACKOfoRecv TCPAbortOnSyn TCPAbortOnData TCPAbortOnClose TCPAbortOnMemory TCPAbortOnTimeout TCPAbortOnLinger TCPAbortFailed TCPMemoryPressures TCPSACKDiscard TCPDSACKIgnoredOld TCPDSACKIgnoredNoUndo TCPSpuriousRTOs TCPMD6NotFound TCPMD5Unexpected TCPSackShifted TCPSackMerged TCPSackShiftFallback TCPBacklogDrop TCPMinTTLDrop TCPDeferAcceptDrop IPReversePathFilter TCPTimeWaitOverflow TCPReqQFullDoCookies TCPReqQFullDrop
TcpExt: 0 0 0 0 0 0 0 0 10 0 67116 0 0 0 0 8 117271 53 18860 0 0 102295 23352211 87967244 0 16861098 118195 893786 881659 0 29 10 0 0 0 9 10 16 12 2321 21 0 1 156 39 940 13 921 8015 0 1 2 0 18461 22 941 0 0 2974 15422 0 709 0 0 0 1 8 119 3 0 0 0 0 25231 0 0 0 4 0 0 0
IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets InBcastOctets OutBcastOctets
IpExt: 0 0 25308 48 725 1 24434248973 4218365129 2181277 13241 365505 65
当然，该格式是不友好这里，但相当不错的脚本语言来处理。你可以看到信息的深度和多样性！最后一行显示该系统读取了24,434,248,973个字节并写入了4,218,365,129。 （这是在刮大型网站九个一天。）
周围的一些更戳，我看到PROCFS包含似乎是每个进程网络I/O统计。
[[email protected] ~]$ cat /proc/32089/net/dev
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
lo: 622834 6102 0 0 0 0 0 0 622834 6102 0 0 0 0 0 0
eth0: 3290609241 20752766 0 0 0 0 0 0 161708339 16831446 0 0 0 0 0 0
virbr0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
如果这是一个长期运行的过程，那么这可以用来计算使用的带宽。
---编辑--- 尽管路径，正如其他人所指出的，这些都是所有过程是相同的，因此显然不每进程的网络I/O统计。
获取每个任务网络io统计数据的唯一方法是使用某种taskstats接口（基于netlink）。不幸的是，它记录了你可以想象的一切，但是网络信息。我为套接字写入/读取上的会计字节和taskstats上的两个条目（对于tx/rx）做了一个小补丁，以从我的系统中获取这种信息。
包括：
Signed-off-by: Rafael David Tinoco <[email protected]>
diff --git a/include/linux/taskstats.h b/include/linux/taskstats.h
index 341dddb..b0c5990 100644
--- a/include/linux/taskstats.h
+++ b/include/linux/taskstats.h
@@ -163,6 +163,10 @@ struct taskstats {
/* Delay waiting for memory reclaim */
__u64 freepages_count;
__u64 freepages_delay_total;
+
+ /* Per-task network I/O accounting */
+ __u64 read_net_bytes; /* bytes of socket read I/O */
+ __u64 write_net_bytes; /* bytes of socket write I/O */
};
和源代码：
Signed-off-by: Rafael David Tinoco <[email protected]>
diff --git a/include/linux/task_io_accounting.h b/include/linux/task_io_accounting.h
index bdf855c..bd45b92 100644
--- a/include/linux/task_io_accounting.h
+++ b/include/linux/task_io_accounting.h
@@ -41,5 +41,12 @@ struct task_io_accounting {
* information loss in doing that.
*/
u64 cancelled_write_bytes;
+
+ /* The number of bytes which this task has read from a socket */
+ u64 read_net_bytes;
+
+ /* The number of bytes which this task has written to a socket */
+ u64 write_net_bytes;
+
#endif /* CONFIG_TASK_IO_ACCOUNTING */
};
diff --git a/include/linux/task_io_accounting_ops.h b/include/linux/task_io_accounting_ops.h
index 4d090f9..ee8416f 100644
--- a/include/linux/task_io_accounting_ops.h
+++ b/include/linux/task_io_accounting_ops.h
@@ -12,6 +12,11 @@ static inline void task_io_account_read(size_t bytes)
current->ioac.read_bytes += bytes;
}
+static inline void task_io_account_read_net(size_t bytes)
+{
+ current->ioac.read_net_bytes += bytes;
+}
+
/*
* We approximate number of blocks, because we account bytes only.
* A 'block' is 512 bytes
@@ -26,6 +31,11 @@ static inline void task_io_account_write(size_t bytes)
current->ioac.write_bytes += bytes;
}
+static inline void task_io_account_write_net(size_t bytes)
+{
+ current->ioac.write_net_bytes += bytes;
+}
+
/*
* We approximate number of blocks, because we account bytes only.
* A 'block' is 512 bytes
@@ -59,6 +69,10 @@ static inline void task_io_account_read(size_t bytes)
{
}
+static inline void task_io_account_read_net(size_t bytes)
+{
+}
+
static inline unsigned long task_io_get_inblock(const struct task_struct *p)
{
return 0;
@@ -68,6 +82,10 @@ static inline void task_io_account_write(size_t bytes)
{
}
+static inline void task_io_account_write_net(size_t bytes)
+{
+}
+
static inline unsigned long task_io_get_oublock(const struct task_struct *p)
{
return 0;
diff --git a/include/linux/taskstats.h b/include/linux/taskstats.h
index 341dddb..b0c5990 100644
--- a/include/linux/taskstats.h
+++ b/include/linux/taskstats.h
@@ -163,6 +163,10 @@ struct taskstats {
/* Delay waiting for memory reclaim */
__u64 freepages_count;
__u64 freepages_delay_total;
+
+ /* Per-task network I/O accounting */
+ __u64 read_net_bytes; /* bytes of socket read I/O */
+ __u64 write_net_bytes; /* bytes of socket write I/O */
};
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 00d59d0..b279e69 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -104,10 +104,14 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
stats->read_bytes = p->ioac.read_bytes;
stats->write_bytes = p->ioac.write_bytes;
stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes;
+ stats->read_net_bytes = p->ioac.read_net_bytes;
+ stats->write_net_bytes = p->ioac.write_net_bytes;
#else
stats->read_bytes = 0;
stats->write_bytes = 0;
stats->cancelled_write_bytes = 0;
+ stats->read_net_bytes = 0;
+ stats->write_net_bytes = 0;
#endif
}
#undef KB
diff --git a/net/socket.c b/net/socket.c
index 769c386..dd7dbb6 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -87,6 +87,7 @@
#include <linux/wireless.h>
#include <linux/nsproxy.h>
#include <linux/magic.h>
+#include <linux/task_io_accounting_ops.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@@ -538,6 +539,7 @@ EXPORT_SYMBOL(sock_tx_timestamp);
static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size)
{
+ int ret;
struct sock_iocb *si = kiocb_to_siocb(iocb);
int err;
@@ -550,7 +552,12 @@ static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
if (err)
return err;
- return sock->ops->sendmsg(iocb, sock, msg, size);
+ ret = sock->ops->sendmsg(iocb, sock, msg, size);
+
+ if (ret > 0)
+ task_io_account_write_net(ret);
+
+ return ret;
}
int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
@@ -666,6 +673,7 @@ EXPORT_SYMBOL_GPL(sock_recv_ts_and_drops);
static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size, int flags)
{
+ int ret = 0;
struct sock_iocb *si = kiocb_to_siocb(iocb);
si->sock = sock;
@@ -674,7 +682,12 @@ static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock,
si->size = size;
si->flags = flags;
- return sock->ops->recvmsg(iocb, sock, msg, size, flags);
+ ret = sock->ops->recvmsg(iocb, sock, msg, size, flags);
+
+ if (ret > 0)
+ task_io_account_read_net(ret);
+
+ return ret;
}
static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
Vnstat是简单的工具来检查网络带宽的使用，
下面是一个命令来安装它
sudo apt-get install vnstat
并运行您需要运行以下命令的vnstat。
vnstat
这里（check Monitor Network Bandwidth Usage）是每天检查，每周多一些选择，每月和十大一天的网络带宽的使用。
希望能帮助大家。
猫的/ proc /净/ dev这是找出带宽使用
[email protected]:~$ cat /proc/net/dev
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
wlan1: 9420966650 7703510 0 1 0 0 0 0 673178457 4296602 0 0 0 0 0 0
eth2: 7961371946 6849173 0 10 0 0 0 167030 446826449 3289015 0 0 0 0 0 0
lo: 48209054 473527 0 0 0 0 0 0 48209054 473527 0 0 0 0 0 0
内存总线带宽的方式吗？网络带宽？什么带宽？ – 2012-02-24 19:00:57
是什么让你觉得nethogs不准确？ – 2012-02-24 19:01:43
@Vlad网络带宽 – AnkurVj 2012-02-24 19:02:31